# Claude Fable 5Extra high

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Anthropic

Canonical URL: https://benchize.com/models/claude-fable-5-xhigh
Last updated: Thu, 22 Oct 2026 06:30:09 GMT

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Anthropic

## Benchmarks

| Benchmark | Score | ± | Rank | Cost | Latency | Source |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [FrontierCode 1.1 extended](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Aextended.md) | 64.94% | — | 3 / 125 | $10.53 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.6494 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.7086 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 10.5282 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort xhigh sourceVersion v1_1 subset extended ### Reported statistics flaggedRate 0.002 sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Fable 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Fable%205/xhigh/extended` |  |  |  |  |  |  |  |
| [DeepSWE](https://benchize.com/benchmarks/deepswe%3Av1.1.md) | 69.91% | Range 66.67–73.16% | 12 / 70 | $13.41 | 1,411.58s | [deepswe](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `pass_at_1` \| 0.6991150442477876 \| score_fraction \| scored_rollout_attempts \| Higher is better \| \| `pass_at_4` \| 0.8849557522123894 \| score_fraction \| tasks_with_one_passing_rollout \| Higher is better \| \| `cost_per_attempt` \| 13.414521495535714 \| USD \| scored_attempt \| Lower is better \| \| `duration` \| 1411.5830643938054 \| seconds \| scored_attempt \| Lower is better \| ### Configuration harness mini-swe-agent Reasoning effort xhigh sourceConfiguration mini_swe_agent_claude_fable_5_xhigh ### Reported statistics Uncertainty Reported interval: 66.67–73.16% interval [0.6666658684930744,0.7315642200025008] intervalMethod 95% run-to-run: SE across repeated whole-benchmark passes (1.96 * std(runs)/sqrt(R)) runCount 4 sampleSize 452 taskCount 113 ### Source [Original source](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) Source deepswe Original model label claude-fable-5 Observed 2026-10-22T03:50:05.889Z Evidence SHA-256 `a7c15d66288fd249c020b9931c017b92d1a3b90e480b3ff34974b752bd030019` Source locator `/rows/11` |  |  |  |  |  |  |  |
| [BullshitBench v2](https://benchize.com/benchmarks/bullshitbench%3Av2.md) | 56% | — | 58 / 191 | — | — | [bullshitbench · v2](https://api.github.com/repos/petergpt/bullshit-benchmark/contents/data/v2/latest/leaderboard.csv?ref=3c655234d15967738f95da696e3f938d4862dcf7) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `green_rate` \| 0.56 \| score_fraction \| all_attempts \| Higher is better \| \| `red_rate` \| 0.03 \| score_fraction \| all_attempts \| Lower is better \| \| `refusal_rate` \| 0.33 \| score_fraction \| all_attempts \| Lower is better \| \| `avg_score` \| 1.7562 \| score \| judge_grade_0_to_2 \| Higher is better \| ### Configuration Reasoning effort xhigh suite v2 thinkingEnabled true ### Reported statistics acceptedCount 3 answeredCount 67 clearCount 56 errorCount 0 partialCount 8 rank 11 refusalCount 33 sampleSize 100 ### Source [Original source](https://api.github.com/repos/petergpt/bullshit-benchmark/contents/data/v2/latest/leaderboard.csv?ref=3c655234d15967738f95da696e3f938d4862dcf7) Source bullshitbench Original model label anthropic/claude-fable-5 Source version v2 Observed 2026-10-22T03:10:12.603Z Evidence SHA-256 `98b485e08764d1c97144bc4f7b28ced1a96d50850947c775870dfda0e5d749b5` Source locator `/rows/10` |  |  |  |  |  |  |  |
| [FrontierCode 1 extended](https://benchize.com/benchmarks/frontiercode%3Av1%3Aextended.md) | 61.6% | — | 1 / 39 | $8.8 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.616 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.653 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 8.8 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort xhigh sourceVersion v1 subset extended ### Reported statistics flaggedRate Not reported sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Fable 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1/data/Claude%20Fable%205/xhigh/extended` |  |  |  |  |  |  |  |
| [ARC-AGI-2](https://benchize.com/benchmarks/arc-prize%3Av2_Semi_Private.md) | 88.33% | — | 21 / 243 | 3usd per task | — | [arc prize · v2](https://arcprize.org/media/data/leaderboard/v2.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.8833333333333333 \| score_fraction \| v2_Semi_Private \| Higher is better \| \| `cost_per_task` \| 3.0043564166666665 \| usd_per_task \| v2_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v2_Semi_Private harness Not reported modelGroup anthropic-claude-fable-5 modelType CoT Reasoning effort xhigh sourceModelVersion anthropic-claude-fable-5-xhigh thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v2.json) Source arc prize Original model label Claude Fable 5 (XHigh) Source version v2 Observed 2026-10-22T05:20:04.306Z Evidence SHA-256 `4351eb696e78113b0459e9bb5f0258318b905efef34f473dcea51ce641b0d94d` Source locator `/evaluations/187` |  |  |  |  |  |  |  |
| [ARC-AGI-1](https://benchize.com/benchmarks/arc-prize%3Av1_Semi_Private.md) | 98.5% | — | 1 / 245 | 1.02usd per task | — | [arc prize · v1](https://arcprize.org/media/data/leaderboard/v1.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.985 \| score_fraction \| v1_Semi_Private \| Higher is better \| \| `cost_per_task` \| 1.0224337000000001 \| usd_per_task \| v1_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v1_Semi_Private harness Not reported modelGroup anthropic-claude-fable-5 modelType CoT Reasoning effort xhigh sourceModelVersion anthropic-claude-fable-5-xhigh thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v1.json) Source arc prize Original model label Claude Fable 5 (XHigh) Source version v1 Observed 2026-10-22T05:20:04.066Z Evidence SHA-256 `2bf68d22dafba37047d07ad833ebc0e8199c9aa2f9eeaed50c75c1b704462836` Source locator `/evaluations/186` |  |  |  |  |  |  |  |
| [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 53.48% | — | 4 / 125 | $13.09 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.5348 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.5885 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 13.0938 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort xhigh sourceVersion v1_1 subset main ### Reported statistics flaggedRate 0.003 sampleSize 100 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Fable 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Fable%205/xhigh/main` |  |  |  |  |  |  |  |
| [WeirdML v3](https://benchize.com/benchmarks/weirdml%3Av3.md) | 0.16source score | Range 0.14–0.18 | 9 / 25 | — | — | [weirdml · b0120fe](https://htihle.github.io/assets/data/weirdml_v3.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.15586933333333333 \| source_score \| reported \| Higher is better \| \| `mean_final_best` \| 0.2786194878787879 \| source_score \| reported \| Higher is better \| ### Configuration budget {"kind":"equivalent_tokens","limit":50000000,"start":500000} harness claude_code Reasoning effort xhigh sourceConfiguration fable-5 thinkingEnabled true ### Reported statistics Uncertainty Reported interval: 0.14–0.18 interval [0.13580349169599487,0.1761247978419202] intervalMethod {"assumptions":"Independent fresh runs; approximately normal scores; shared variance prior. Pool fitted within analysis mode, including incomplete models; pool estimation uncertainty is not propagated.","confidence":0.95,"draws":10000,"fixed_tasks":true,"method":"partially_pooled_variance","pool":{"degrees_of_freedom":1533,"fallback":false,"prior_df":4,"variance":0.0026383113392869583},"seed":20260915,"unit":"run"} runCount 42 taskCount 11 ### Source [Original source](https://htihle.github.io/assets/data/weirdml_v3.json) Source weirdml Original model label Claude Fable 5 (xhigh) Source version b0120fe Observed 2026-10-22T04:50:05.075Z Evidence SHA-256 `82c3a8de423b23ca0af9761429299a2f21edb0b819e947fdc863f8b5ea4a49b8` Source locator `/rows/8` |  |  |  |  |  |  |  |
| [FrontierCode 1 main](https://benchize.com/benchmarks/frontiercode%3Av1%3Amain.md) | 46.8% | — | 1 / 39 | $10.6 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.468 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.493 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 10.6 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort xhigh sourceVersion v1 subset main ### Reported statistics flaggedRate Not reported sampleSize 100 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Fable 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1/data/Claude%20Fable%205/xhigh/main` |  |  |  |  |  |  |  |
| [SimpleQA Verified](https://benchize.com/benchmarks/epoch-ai%3Asimpleqa_verified.md) | 70.7% | SE ±1.44 pp | 7 / 40 | — | — | [epoch ai · SimpleQA Verified](https://epoch.ai/data/benchmark_data.zip#file=simpleqa_verified.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.707 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.707 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion SimpleQA Verified reasoningBudget Not reported Reasoning effort xhigh sourceModelVersion claude-fable-5_xhigh ### Reported statistics Uncertainty Standard error: ±1.44 pp standardError 0.014399942998441292 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=simpleqa_verified.csv) Source epoch ai Original model label claude-fable-5 Source version SimpleQA Verified Evaluated 2026-08-10T23:44:03.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `e2d3fae377f0ddd3d079bcc3971b9b9388a0a950289effe7b521177ea2e988cc` Source locator `/rows/84` |  |  |  |  |  |  |  |

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Cite as: Claude Fable 5Extra high — Benchize, https://benchize.com/models/claude-fable-5-xhigh (retrieved 2026-10-22)