# Claude Fable 5.1

> Source: Benchize (https://benchize.com) — https://benchize.com/models/claude-fable-5-1. When citing or reusing this content, credit "Benchize" and link to https://benchize.com/models/claude-fable-5-1.

Anthropic

Canonical URL: https://benchize.com/models/claude-fable-5-1
Last updated: Wed, 21 Oct 2026 18:52:20 GMT

Reproduction and quotation must name Benchize, link to the canonical HTML URL, and retain individual source citations.

Anthropic

## Benchmarks

| Benchmark | Score | ± | Rank | Cost | Source |  |
| --- | --- | --- | --- | --- | --- | --- |
| [OpenVibeEval Accessibility](https://benchize.com/benchmarks/openvibeeval%3Aaccessibility.md) | 72 | — | 16 / 26 | — | [openvibeeval](https://openvibeeval.com/leaderboard/) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `adjusted_score` \| 72 \| score \| sample_size_adjusted_accessibility \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Claude Fable 5.1 thinkingEnabled Not reported ### Reported statistics runCount 1 ### Source [Original source](https://openvibeeval.com/leaderboard/) Source openvibeeval Original model label Claude Fable 5.1 Evaluated 2026-09-02 Observed 2026-10-21T16:32:04.885Z Evidence SHA-256 `9b2e7d6060910e3dc7083a6a7f67377601ce78806b2b6b7693cf8d047dd63fbb` Source locator `/rows/1` |  |  |  |  |  |  |
| [DesignArena Agentic presentation generation](https://benchize.com/benchmarks/designarena%3Aagentic-slides.md) | 1,327elo | SE ±13.32 | 1 / 19 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=agentic-slides) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1327 \| elo \| agentic-slides \| Higher is better \| ### Configuration arenaType agents category agon_slides inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±13.32 averageGenerationTimeMs Not reported battles 771 losses 289 standardError 13.3181 winRate 62.5 wins 482 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=agentic-slides) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:03.963Z Evidence SHA-256 `b732c5aba2e357cf6034f23084d5f95f8e8882f62b8bf3ee340f0cd5cd773724` Source locator `/data/0` |  |  |  |  |  |  |
| [DesignArena ASCII art generation](https://benchize.com/benchmarks/designarena%3Aascii.md) | 1,323elo | — | 5 / 65 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=ascii) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1323 \| elo \| ascii \| Higher is better \| ### Configuration arenaType models category ascii inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 188435 battles 137 losses 48 standardError Not reported winRate 65 wins 89 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=ascii) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:03.513Z Evidence SHA-256 `0603b8c65b44ee887f5b566feb469465f59635137a6ac5c6d94c23bcf3776311` Source locator `/data/4` |  |  |  |  |  |  |
| [Rapidata Text-to-3D with LLM code — Preference](https://benchize.com/benchmarks/rapidata%3Atext-to-3d-code%3Arlb_1YVpXugYHlm63x.md) | 1,084.72elo | CI 1,061.06–1,108.38 | 7 / 9 | — | [rapidata](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXugYHlm63x) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1084.7176863182783 \| elo \| rlb_1YVpXugYHlm63x \| Higher is better \| ### Configuration benchmarkId bmk_1YVpXgN69Mv8I9 criterion rlb_1YVpXugYHlm63x participantId par_1YVpXvfuPGpmZq sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,061.06–1,108.38 confidenceIntervalLowerOffset 23.661940181908676 confidenceIntervalUpperOffset 23.66194018190845 totalMatches 5226 wins 2840 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXugYHlm63x) Source rapidata Original model label claude-fable-5.1 Source version Observed 2026-10-21T16:37:43.410Z Evidence SHA-256 `a30cb5e42eb353cd3fadbb4c6519873ad22d3f0528a4e569fbbe40160928d934` Source locator `/items/6` |  |  |  |  |  |  |
| [DesignArena Mobile application development](https://benchize.com/benchmarks/designarena%3Amobileapps.md) | 1,267elo | SE ±16.26 | 3 / 33 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=mobileapps) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1267 \| elo \| mobileapps \| Higher is better \| ### Configuration arenaType agents category mobileapps inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±16.26 averageGenerationTimeMs Not reported battles 481 losses 210 standardError 16.2639 winRate 56.3 wins 271 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=mobileapps) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:02.538Z Evidence SHA-256 `40af33d0e93e729486da375cbe954633e2458af0dd6ca6d9fbdcda90da650f7d` Source locator `/data/3` |  |  |  |  |  |  |
| [TubeLab Scriptwriting](https://benchize.com/benchmarks/tubelab%3Ascriptwriting.md) | 85.7% | — | 2 / 16 | 2.69ratio | [tubelab](https://tubelab.net/_next/static/chunks/pages/benchmark/scriptwriting-7ad7196ff3093ad4.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `quality` \| 85.7 \| percent \| source_reported \| Higher is better \| \| `craft` \| 85.7 \| percent \| source_reported \| Higher is better \| \| `relative_cost_per_script` \| 2.69 \| ratio \| source_reported \| Lower is better \| \| `script_time` \| 6.7 \| minutes \| source_reported \| Lower is better \| \| `hook` \| 8.5 \| score_out_of_10 \| craft_rubric \| Higher is better \| \| `retention` \| 8.4 \| score_out_of_10 \| craft_rubric \| Higher is better \| \| `storytelling` \| 8.5 \| score_out_of_10 \| craft_rubric \| Higher is better \| \| `voiceMatch` \| 8.2 \| score_out_of_10 \| craft_rubric \| Higher is better \| \| `pacing` \| 8.5 \| score_out_of_10 \| craft_rubric \| Higher is better \| \| `clarity` \| 9.3 \| score_out_of_10 \| craft_rubric \| Higher is better \| ### Configuration judgingProtocol blind_model_judges Reasoning effort unknown taskCount 12 ### Reported statistics confidence {"high":89.5,"low":81.4} headToHead {"losses":2,"ties":3,"winPercent":65,"wins":7} rank 2 ### Source [Original source](https://tubelab.net/_next/static/chunks/pages/benchmark/scriptwriting-7ad7196ff3093ad4.js) Source tubelab Original model label Claude Fable 5.1 Observed 2026-10-21T16:34:03.856Z Evidence SHA-256 `72f9d867f388256af8fc6dca12e8c7b6f1ddcbb97f0712da339b73102686761f` Source locator `/rows/1` |  |  |  |  |  |  |
| [DesignArena Godot game development](https://benchize.com/benchmarks/designarena%3Agodot-game-dev.md) | 1,327elo | SE ±15.12 | 2 / 14 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=godot-game-dev) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1327 \| elo \| godot-game-dev \| Higher is better \| ### Configuration arenaType agents category agon_godot inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±15.12 averageGenerationTimeMs Not reported battles 629 losses 247 standardError 15.1218 winRate 60.7 wins 382 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=godot-game-dev) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:02.075Z Evidence SHA-256 `0aad65341ae5287f97ba93448674c557edad76a4e41056ec30cc32bf05d3a7e3` Source locator `/data/1` |  |  |  |  |  |  |
| [DesignArena Overall frontend coding](https://benchize.com/benchmarks/designarena%3Acode.md) | 1,336elo | SE ±3.79 | 9 / 116 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=code) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1336 \| elo \| code \| Higher is better \| ### Configuration arenaType models category allcategories inputModality text sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±3.79 averageGenerationTimeMs 323402 battles 9349 losses 3802 standardError 3.7863 winRate 59.3 wins 5547 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=code) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:57.301Z Evidence SHA-256 `0c897b58670f5e352bd123db999a40c0d1781a443964c502b90774a76a3a7758` Source locator `/data/10` |  |  |  |  |  |  |
| [Vending-Bench 2](https://benchize.com/benchmarks/vendingbench%3Av2.md) | — | — | — | $5,421.56 | [vendingbench](https://andonlabs.com/_app/immutable/chunks/Cjn0_qj9.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `final_balance` \| 5421.556666666666 \| USD \| one_simulated_year \| Higher is better \| \| `geometric_mean_balance` \| 4600.877511141228 \| USD \| positive_final_balances \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Claude Fable 5.1 thinkingEnabled Not reported ### Reported statistics confidenceHalfWidth95 2439.0953946519217 positiveBalanceRuns 6 runCount 6 standardDeviation 3048.2342606477396 standardError 1244.4364258428172 ### Source [Original source](https://andonlabs.com/_app/immutable/chunks/Cjn0_qj9.js) Source vendingbench Original model label Claude Fable 5.1 Observed 2026-10-21T16:36:40.592Z Evidence SHA-256 `1a0b043147050298c405bcb743d73e425d532464202231cd18c27f836fa5f223` Source locator `/rows/5` |  |  |  |  |  |  |
| [Longform Creative Writing](https://benchize.com/benchmarks/eq-bench%3Alongform-writing.md) | 85.3% | — | 2 / 93 | — | [eq bench · longform-writing](https://eqbench.com/creative_writing_longform.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `overall_score_100` \| 85.3 \| percent \| overall \| Higher is better \| \| `chapter1_avg` \| 17.48 \| rubric_score \| overall \| Higher is better \| \| `chapter2_avg` \| 17.36 \| rubric_score \| overall \| Higher is better \| \| `chapter3_avg` \| 17.12 \| rubric_score \| overall \| Higher is better \| \| `chapter4_avg` \| 17.35 \| rubric_score \| overall \| Higher is better \| \| `chapter5_avg` \| 17.33 \| rubric_score \| overall \| Higher is better \| \| `chapter6_avg` \| 17.50 \| rubric_score \| overall \| Higher is better \| \| `chapter7_avg` \| 17.57 \| rubric_score \| overall \| Higher is better \| \| `chapter8_avg` \| 17.70 \| rubric_score \| overall \| Higher is better \| \| `final_judgement_avg` \| 17.48 \| rubric_score \| overall \| Higher is better \| ### Configuration interactiveAdjustments none protocol longform-writing sourceModelVersion claude-fable-5-1 ### Source [Original source](https://eqbench.com/creative_writing_longform.js) Source eq bench Original model label claude-fable-5-1 Source version longform-writing Observed 2026-10-21T16:35:02.575Z Evidence SHA-256 `3ba283ce357ac7620e16db640a961879c30fe3ddc50a27de9a8ed4290784825c` Source locator `/leaderboardDataLongformV3/133` |  |  |  |  |  |  |
| [DesignArena SVG generation](https://benchize.com/benchmarks/designarena%3Asvgs.md) | 1,301elo | — | 7 / 77 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=svgs) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1301 \| elo \| svgs \| Higher is better \| ### Configuration arenaType models category svg inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 79029 battles 1326 losses 578 standardError Not reported winRate 56.4 wins 748 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=svgs) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:03.249Z Evidence SHA-256 `8cbc34a474a66ef5c64f3ffe557df9b55bf7e13368c07c0214223e3ed8f3f21e` Source locator `/data/10` |  |  |  |  |  |  |
| [SimpleBench](https://benchize.com/benchmarks/simplebench%3Aavg-at-5.md) | 86.6% | — | 2 / 62 | — | [simplebench](https://simple-bench.com/static/js/leaderboard-data.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `accuracy` \| 86.6 \| percent \| average_at_5 \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Claude Fable 5.1 thinkingEnabled Not reported ### Reported statistics rank 2nd ### Source [Original source](https://simple-bench.com/static/js/leaderboard-data.js) Source simplebench Original model label Claude Fable 5.1 Observed 2026-10-21T16:32:13.183Z Evidence SHA-256 `b2d0285ad3e4e15750ed20d39897e7558d1c05e8962e90c861b06f93c8019dc9` Source locator `/rows/2` |  |  |  |  |  |  |
| [FrontierSWE v2 abs](https://benchize.com/benchmarks/frontierswe%3Av2%3Aabs.md) | 56.29source score | — | 3 / 15 | — | [frontierswe](https://www.frontierswe.com/) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `overall` \| 56.29078999999999 \| source_score \| mean \| Higher is better \| \| `overall_best` \| 66.65389696969699 \| source_score \| best \| Higher is better \| \| `overall_worst` \| 44.46506969696971 \| source_score \| worst \| Higher is better \| \| `implementation` \| 73.22154142857143 \| source_score \| mean \| Higher is better \| \| `performance` \| 43.136626666666665 \| source_score \| mean \| Higher is better \| \| `research` \| 51.350621 \| source_score \| mean \| Higher is better \| ### Configuration aggregation mean harness proximus normalization abs Reasoning effort unknown ### Source [Original source](https://www.frontierswe.com/) Source frontierswe Original model label Claude Fable 5.1 Observed 2026-10-21T16:31:27.602Z Evidence SHA-256 `818e027068cf61ff1aadd8281b6e49e9c6795221015210601b5e34d0d223e5b5` Source locator `/rows/2` |  |  |  |  |  |  |
| [DesignArena Data visualization generation](https://benchize.com/benchmarks/designarena%3Adata-viz.md) | 1,344elo | — | 3 / 99 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=data-viz) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1344 \| elo \| data-viz \| Higher is better \| ### Configuration arenaType models category dataviz inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 242746 battles 437 losses 167 standardError Not reported winRate 61.8 wins 270 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=data-viz) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:58.264Z Evidence SHA-256 `a895f6f1a25fa8eb01f821c2097ddec4f884de7bd22f1b8a22e82e6679b71849` Source locator `/data/3` |  |  |  |  |  |  |
| [AutomationBench](https://benchize.com/benchmarks/zapier%3Aautomationbench.md) | 31.4% | — | 14 / 113 | $2.45 | [zapier](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 31.4 \| percent \| reported \| Higher is better \| \| `cost` \| 2.45 \| USD \| per_task \| Lower is better \| ### Configuration benchmarkVersion 1.0.6 costFootnote false Fallback policy with Opus 5 Reasoning effort unknown Model configuration Claude Fable 5.1 (with Opus 5 Fallback) thinkingEnabled Not reported Fallback is enabled for refusals; this does not mean every task used a fallback model. ### Reported statistics rank 14 ### Source [Original source](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) Source zapier Original model label Claude Fable 5.1 (with Opus 5 Fallback) Observed 2026-10-21T16:34:56.783Z Evidence SHA-256 `43978e38f018789fa59c11de5328abe9e5905bfa9a5a4d601fa3aa4d9c153b0d` Source locator `/rows/13` |  |  |  |  |  |  |
| [Humanity's Last Exam (Diamond)](https://benchize.com/benchmarks/scale%3Ahle-diamond.md) | 51.3source score | CI 48.2–54.4 | 4 / 12 | — | [scale](https://labs.scale.com/leaderboard/hle-diamond) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 51.3 \| source_score \| reported \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration claude-fable-5-1 sourceModelVersion Not reported thinkingEnabled Not reported ### Reported statistics Uncertainty Confidence interval: 48.2–54.4 contaminationWarning Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions. rank 4 reportedConfidenceHalfWidth 3.1 ### Source [Original source](https://labs.scale.com/leaderboard/hle-diamond) Source scale Original model label claude-fable-5-1 Observed 2026-10-21T16:35:27.820Z Evidence SHA-256 `c60d42f5aacdf787d9ccc8b70817766d86707776a7f8b44ef0337cb9ae60bf20` Source locator `/rows/3` |  |  |  |  |  |  |
| [Rapidata Text-to-3D with LLM code — Overall preference](https://benchize.com/benchmarks/rapidata%3Atext-to-3d-code%3Aoverall.md) | 1,094.31elo | CI 1,083.04–1,105.57 | 7 / 9 | — | [rapidata](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1094.3053013936735 \| elo \| overall \| Higher is better \| ### Configuration benchmarkId bmk_1YVpXgN69Mv8I9 criterion overall participantId par_1YVpXvfuPGpmZq sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,083.04–1,105.57 confidenceIntervalLowerOffset 11.263039457952573 confidenceIntervalUpperOffset 11.263039457952573 totalMatches 20516.13863018382 wins 11318.21896315892 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query) Source rapidata Original model label claude-fable-5.1 Source version Observed 2026-10-21T16:37:41.757Z Evidence SHA-256 `048d6dec5a711f63fb70b09a6495cf440b0bf6f34f80156b97832c611e7a2913` Source locator `/items/6` |  |  |  |  |  |  |
| [Rapidata SVG generation — Alignment](https://benchize.com/benchmarks/rapidata%3Asvg%3Arlb_1MFkk9yZHssERh.md) | 1,210.3elo | CI 1,191.18–1,229.41 | 9 / 37 | — | [rapidata · v1](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkk9yZHssERh) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1210.2964471669425 \| elo \| rlb_1MFkk9yZHssERh \| Higher is better \| ### Configuration benchmarkId bmk_1MFkc3sXfbKCqf criterion rlb_1MFkk9yZHssERh participantId par_1U5GPfG7E8fC1J sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,191.18–1,229.41 confidenceIntervalLowerOffset 19.115259089772053 confidenceIntervalUpperOffset 19.115259089772053 totalMatches 7440 wins 4206 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkk9yZHssERh) Source rapidata Original model label claude-fable-5.1 Source version v1 Observed 2026-10-21T16:37:40.342Z Evidence SHA-256 `2f5c8d08728735790b500d930d71b66f04253f1209f7c1c3da0db0846c163fcf` Source locator `/items/13` |  |  |  |  |  |  |
| [DesignArena Website generation](https://benchize.com/benchmarks/designarena%3Awebsite.md) | 1,313elo | — | 11 / 123 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=website) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1313 \| elo \| website \| Higher is better \| ### Configuration arenaType models category website inputModality text sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 323652 battles 6043 losses 2640 standardError Not reported winRate 56.3 wins 3403 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=website) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:57.757Z Evidence SHA-256 `51873e97776a3c5ae706b24cc2c60384793dd18398df970e213a8e7c276d8ac0` Source locator `/data/13` |  |  |  |  |  |  |
| [HiL-Bench (Human-in-Loop Benchmark)](https://benchize.com/benchmarks/scale%3Ahil.md) | 61.5source score | CI 55.03–67.97 | 4 / 22 | — | [scale](https://labs.scale.com/leaderboard/hil) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 61.5 \| source_score \| reported \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Claude Fable 5.1 sourceModelVersion Not reported thinkingEnabled Not reported ### Reported statistics Uncertainty Confidence interval: 55.03–67.97 contaminationWarning Not reported rank 6 reportedConfidenceHalfWidth 6.47 ### Source [Original source](https://labs.scale.com/leaderboard/hil) Source scale Original model label Claude Fable 5.1 Observed 2026-10-21T16:35:30.082Z Evidence SHA-256 `043a333e27453edada150667c7f4439b2aab463f37928c2153c6aa79f33dd1b2` Source locator `/rows/5` |  |  |  |  |  |  |
| [DesignArena Image to HTML](https://benchize.com/benchmarks/designarena%3Aimage-to-html.md) | 1,225elo | — | 13 / 35 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=image-to-html) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1225 \| elo \| image-to-html \| Higher is better \| ### Configuration arenaType models category website inputModality image sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 328127 battles 1032 losses 490 standardError Not reported winRate 52.5 wins 542 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=image-to-html) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:58.959Z Evidence SHA-256 `94f97ebbdd53a8c56f138b620e59b3a9b35c66c3954dcaaa1b2ed4c71518b404` Source locator `/data/13` |  |  |  |  |  |  |
| [Rapidata Text-to-3D with LLM code — Creativity](https://benchize.com/benchmarks/rapidata%3Atext-to-3d-code%3Arlb_1YVqTDVUylKrUp.md) | 976.95elo | CI 954.18–999.73 | 8 / 9 | — | [rapidata](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVqTDVUylKrUp) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 976.9539359686848 \| elo \| rlb_1YVqTDVUylKrUp \| Higher is better \| ### Configuration benchmarkId bmk_1YVpXgN69Mv8I9 criterion rlb_1YVqTDVUylKrUp participantId par_1YVpXvfuPGpmZq sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 954.18–999.73 confidenceIntervalLowerOffset 22.775471204491737 confidenceIntervalUpperOffset 22.775471204491737 totalMatches 4838 wins 2368 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVqTDVUylKrUp) Source rapidata Original model label claude-fable-5.1 Source version Observed 2026-10-21T16:37:42.177Z Evidence SHA-256 `4ce251bc655221de3fef117b85e05f775323a39098049de2bbfd4835ca2c6293` Source locator `/items/7` |  |  |  |  |  |  |
| [Humanity's Sixth Sense](https://benchize.com/benchmarks/scale%3Ahss.md) | 40.8source score | CI 37.2–44.4 | 6 / 24 | — | [scale](https://labs.scale.com/leaderboard/hss) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 40.8 \| source_score \| reported \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Claude-Fable-5.1 sourceModelVersion Not reported thinkingEnabled Not reported ### Reported statistics Uncertainty Confidence interval: 37.2–44.4 contaminationWarning Not reported rank 7 reportedConfidenceHalfWidth 3.6 ### Source [Original source](https://labs.scale.com/leaderboard/hss) Source scale Original model label Claude-Fable-5.1 Observed 2026-10-21T16:35:26.953Z Evidence SHA-256 `0b7d37655e8886c99f8325ed125eafaa4f89312cd44e1a783ac0c49b45db842b` Source locator `/rows/6` |  |  |  |  |  |  |
| [DesignArena Agentic web applications](https://benchize.com/benchmarks/designarena%3Awebapps.md) | 1,318elo | SE ±13.25 | 3 / 39 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=webapps) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1318 \| elo \| webapps \| Higher is better \| ### Configuration arenaType agents category agon_webapps inputModality text sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±13.25 averageGenerationTimeMs Not reported battles 745 losses 327 standardError 13.2508 winRate 56.1 wins 418 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=webapps) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:00.309Z Evidence SHA-256 `f955787274cf4ac627ada7cd33eaae2e08ef7297db92d3391340fcaa0b44a35f` Source locator `/data/2` |  |  |  |  |  |  |
| [DistressBench](https://benchize.com/benchmarks/scale%3Adistressbench.md) | 71.55source score | CI 70.23–72.87 | 12 / 27 | — | [scale](https://labs.scale.com/leaderboard/distressbench) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 71.55 \| source_score \| reported \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration claude-fable-5.1 sourceModelVersion claude-fable-5-1 thinkingEnabled Not reported ### Reported statistics Uncertainty Confidence interval: 70.23–72.87 contaminationWarning Not reported rank 16 reportedConfidenceHalfWidth 1.32 ### Source [Original source](https://labs.scale.com/leaderboard/distressbench) Source scale Original model label claude-fable-5.1 Observed 2026-10-21T16:35:27.403Z Evidence SHA-256 `6ca6a76569e51fde037c8e2610bdf7bc39d99b54c69b6b4dc0dba9ec2a4e24da` Source locator `/rows/15` |  |  |  |  |  |  |
| [Rapidata SVG generation — Preference](https://benchize.com/benchmarks/rapidata%3Asvg%3Arlb_1MFkkEMFnCNyKl.md) | 1,158.83elo | CI 1,139.81–1,177.84 | 12 / 37 | — | [rapidata · v1](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkkEMFnCNyKl) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1158.8272001418202 \| elo \| rlb_1MFkkEMFnCNyKl \| Higher is better \| ### Configuration benchmarkId bmk_1MFkc3sXfbKCqf criterion rlb_1MFkkEMFnCNyKl participantId par_1U5GPfG7E8fC1J sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,139.81–1,177.84 confidenceIntervalLowerOffset 19.015314386086175 confidenceIntervalUpperOffset 19.015314386086175 totalMatches 7507 wins 4021.5 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkkEMFnCNyKl) Source rapidata Original model label claude-fable-5.1 Source version v1 Observed 2026-10-21T16:37:40.980Z Evidence SHA-256 `b70f07a4924c82499996aba613ca8ec2d0aee9ec9ebd404e45c8bf250206cf40` Source locator `/items/18` |  |  |  |  |  |  |
| [DesignArena UI component generation](https://benchize.com/benchmarks/designarena%3Aui-components.md) | 1,339elo | — | 9 / 112 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=ui-components) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1339 \| elo \| ui-components \| Higher is better \| ### Configuration arenaType models category uicomponent inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 215969 battles 684 losses 276 standardError Not reported winRate 59.6 wins 408 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=ui-components) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:57.993Z Evidence SHA-256 `46482ec1b4012638eace65493daea4750e2088098018fd9d5fc46126fc1f8557` Source locator `/data/10` |  |  |  |  |  |  |
| [DesignArena Full-stack application development](https://benchize.com/benchmarks/designarena%3Afullstack.md) | 1,326elo | SE ±15.96 | 2 / 31 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=fullstack) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1326 \| elo \| fullstack \| Higher is better \| ### Configuration arenaType agents category fullstack inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±15.96 averageGenerationTimeMs Not reported battles 509 losses 218 standardError 15.958 winRate 57.2 wins 291 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=fullstack) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:00.857Z Evidence SHA-256 `aa171459dd44cfad57fba8da746c40b27832b57dc731b1198bdb71c73ddd0f97` Source locator `/data/1` |  |  |  |  |  |  |
| [DesignArena Browser game generation](https://benchize.com/benchmarks/designarena%3Agame-dev.md) | 1,381elo | — | 6 / 117 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=game-dev) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1381 \| elo \| game-dev \| Higher is better \| ### Configuration arenaType models category gamedev inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 380919 battles 1497 losses 515 standardError Not reported winRate 65.6 wins 982 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=game-dev) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:38:01.100Z Evidence SHA-256 `53db6a89112ce8cdf644568c666d4b8309aece764cfcedb291ffd52ae3934e30` Source locator `/data/5` |  |  |  |  |  |  |
| [Rapidata SVG generation — Coherence](https://benchize.com/benchmarks/rapidata%3Asvg%3Arlb_1MFkkBzpuU8fTG.md) | 1,206.97elo | CI 1,188.33–1,225.62 | 3 / 37 | — | [rapidata · v1](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkkBzpuU8fTG) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1206.974599942389 \| elo \| rlb_1MFkkBzpuU8fTG \| Higher is better \| ### Configuration benchmarkId bmk_1MFkc3sXfbKCqf criterion rlb_1MFkkBzpuU8fTG participantId par_1U5GPfG7E8fC1J sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,188.33–1,225.62 confidenceIntervalLowerOffset 18.645034891519572 confidenceIntervalUpperOffset 18.645034891519344 totalMatches 7507 wins 4220.5 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query?leaderboard_id%5Beq%5D=rlb_1MFkkBzpuU8fTG) Source rapidata Original model label claude-fable-5.1 Source version v1 Observed 2026-10-21T16:37:39.715Z Evidence SHA-256 `aa3cb94ff16f544c58adeea35b9087d281c785058b8ce1ae0f98a7ff84920930` Source locator `/items/6` |  |  |  |  |  |  |
| [DesignArena 3D design generation](https://benchize.com/benchmarks/designarena%3A3d-design.md) | 1,393elo | — | 7 / 110 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=3d-design) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1393 \| elo \| 3d-design \| Higher is better \| ### Configuration arenaType models category 3d inputModality Not reported sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics averageGenerationTimeMs 304684 battles 1271 losses 410 standardError Not reported winRate 67.7 wins 861 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=3d-design) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:58.515Z Evidence SHA-256 `bcc0267f7bc7e9ec112306b3a35413cf78bbccbfaa838356232d5d5ed0b83d0f` Source locator `/data/7` |  |  |  |  |  |  |
| [Rapidata Text-to-3D with LLM code — Alignment](https://benchize.com/benchmarks/rapidata%3Atext-to-3d-code%3Arlb_1YVpXug2nDeUlV.md) | 1,146.26elo | CI 1,123.59–1,168.93 | 6 / 9 | — | [rapidata](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXug2nDeUlV) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1146.2572478789407 \| elo \| rlb_1YVpXug2nDeUlV \| Higher is better \| ### Configuration benchmarkId bmk_1YVpXgN69Mv8I9 criterion rlb_1YVpXug2nDeUlV participantId par_1YVpXvfuPGpmZq sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,123.59–1,168.93 confidenceIntervalLowerOffset 22.67094191416345 confidenceIntervalUpperOffset 22.67094191416345 totalMatches 5226 wins 3017 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXug2nDeUlV) Source rapidata Original model label claude-fable-5.1 Source version Observed 2026-10-21T16:37:42.991Z Evidence SHA-256 `a2223beea99910879fd4c5ded70604d3d62dcff1f04a3b617d13f28f03a75948` Source locator `/items/5` |  |  |  |  |  |  |
| [DesignArena Image to web application](https://benchize.com/benchmarks/designarena%3Aimage-to-webapp.md) | 1,262elo | SE ±11.89 | 3 / 24 | — | [designarena · public](https://www.designarena.ai/api/leaderboard#board=image-to-webapp) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1262 \| elo \| image-to-webapp \| Higher is better \| ### Configuration arenaType agents category agon_webapps inputModality image sourceModelVersion claude-fable-5-1 variationName public ### Reported statistics Uncertainty Standard error: ±11.89 averageGenerationTimeMs Not reported battles 940 losses 416 standardError 11.8887 winRate 55.7 wins 524 ### Source [Original source](https://www.designarena.ai/api/leaderboard#board=image-to-webapp) Source designarena Original model label Claude Fable 5.1 Source version public Observed 2026-10-21T16:37:59.412Z Evidence SHA-256 `cc4e49fc057d3b786184ff44b697422e2420a174e8a98a80a77aa65021921ab4` Source locator `/data/2` |  |  |  |  |  |  |
| [Rapidata SVG generation — Overall preference](https://benchize.com/benchmarks/rapidata%3Asvg%3Aoverall.md) | 1,187.53elo | CI 1,176.69–1,198.36 | 8 / 37 | — | [rapidata · v1](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1187.5255420060207 \| elo \| overall \| Higher is better \| ### Configuration benchmarkId bmk_1MFkc3sXfbKCqf criterion overall participantId par_1U5GPfG7E8fC1J sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,176.69–1,198.36 confidenceIntervalLowerOffset 10.83573605175934 confidenceIntervalUpperOffset 10.83573605175934 totalMatches 22454.198425759063 wins 12448.918694283802 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1MFkc3sXfbKCqf/standings/query) Source rapidata Original model label claude-fable-5.1 Source version v1 Observed 2026-10-21T16:37:39.078Z Evidence SHA-256 `4b73ff7e4ca0ecfd64f7888c2d64f3398a058c945c4644acd54eddb330e16d66` Source locator `/items/12` |  |  |  |  |  |  |
| [Rapidata Text-to-3D with LLM code — Coherence](https://benchize.com/benchmarks/rapidata%3Atext-to-3d-code%3Arlb_1YVpXufudyOLlc.md) | 1,164.81elo | CI 1,142.41–1,187.21 | 6 / 9 | — | [rapidata](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXufudyOLlc) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1164.8090164283922 \| elo \| rlb_1YVpXufudyOLlc \| Higher is better \| ### Configuration benchmarkId bmk_1YVpXgN69Mv8I9 criterion rlb_1YVpXufudyOLlc participantId par_1YVpXvfuPGpmZq sourceModelVersion claude-fable-5.1 weighted false ### Reported statistics Uncertainty Confidence interval: 1,142.41–1,187.21 confidenceIntervalLowerOffset 22.39937758654787 confidenceIntervalUpperOffset 22.39937758654787 totalMatches 5226 wins 3093 ### Source [Original source](https://api.rapidata.ai/benchmark/bmk_1YVpXgN69Mv8I9/standings/query?leaderboard_id%5Beq%5D=rlb_1YVpXufudyOLlc) Source rapidata Original model label claude-fable-5.1 Source version Observed 2026-10-21T16:37:42.585Z Evidence SHA-256 `59243752590bb5f22389edbe87b8cc11b00e9a6fc49b5b94753544fc8780e58d` Source locator `/items/5` |  |  |  |  |  |  |
| [Creative Writing v3](https://benchize.com/benchmarks/eq-bench%3Acreative-writing-v3.md) | 2,162elo | — | 2 / 90 | — | [eq bench · creative-writing-v3](https://eqbench.com/creative_writing.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo_score` \| 2162.0 \| elo \| overall \| Higher is better \| \| `creative_writing_score` \| 16.95 \| rubric_score \| overall \| Higher is better \| ### Configuration interactiveAdjustments none protocol creative-writing-v3 sourceModelVersion claude-fable-5-1 ### Source [Original source](https://eqbench.com/creative_writing.js) Source eq bench Original model label claude-fable-5-1 Source version creative-writing-v3 Observed 2026-10-21T16:35:01.421Z Evidence SHA-256 `722ddb132e8d3a5e5c39b8d445f8475f3f7e24893a007260c6f3e3cce5c1ee18` Source locator `/leaderboardDataCreativeWritingV3/1` |  |  |  |  |  |  |

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Cite as: Claude Fable 5.1 — Benchize, https://benchize.com/models/claude-fable-5-1 (retrieved 2026-10-21)