# Claude Haiku 5.5Medium > Source: Benchize (https://benchize.com) — https://benchize.com/models/claude-haiku-5-5-medium. When citing or reusing this content, credit "Benchize" and link to https://benchize.com/models/claude-haiku-5-5-medium. Anthropic Canonical URL: https://benchize.com/models/claude-haiku-5-5-medium Last updated: Thu, 22 Oct 2026 06:30:09 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 | | | --- | --- | --- | --- | --- | --- | --- | | [NC Bench](https://benchize.com/benchmarks/nc-bench%3Aoverall.md) | 84.17% | — | 107 / 144 | — | [nc bench](https://www.nc-bench.com/models) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 84.17 \| percent \| reported \| Higher is better \| \| `tooling` \| 95 \| percent \| category \| Higher is better \| \| `creative_writing` \| 88.53 \| percent \| category \| Higher is better \| \| `language` \| 100 \| percent \| category \| Higher is better \| \| `utility` \| 88.53 \| percent \| category \| Higher is better \| \| `reasoning` \| 79.69 \| percent \| category \| Higher is better \| \| `text_editing` \| 95.35 \| percent \| category \| Higher is better \| \| `rule_following` \| 35.05 \| percent \| category \| Higher is better \| \| `hallucination` \| 91.2 \| percent \| category \| Higher is better \| ### Configuration Reasoning effort medium Model configuration Claude Haiku 5.5 (Reasoning, Medium) thinkingEnabled true ### Source [Original source](https://www.nc-bench.com/models) Source nc bench Original model label Claude Haiku 5.5 (Reasoning, Medium) Observed 2026-10-22T06:10:03.426Z Evidence SHA-256 `ec261022458543624b08a136d01f5a2f0666cd52ffb49c64d6ca983e8543d1b5` Source locator `/rows/138` | | | | | | | | [ToneBench Scriptwriting](https://benchize.com/benchmarks/tonebench%3Ascripts.md) | 1,608.3 | Range 1,560.5–1,658.9 | 68 / 126 | — | [tonebench](https://benchmark.towardsai.com/data/leaderboard.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 1608.3 \| rating \| reported \| Higher is better \| \| `overall` \| 76.71 \| percent \| reported \| Higher is better \| \| `anti_slop_numbers` \| 74.19 \| source_score \| rubric \| Higher is better \| \| `continuity_emotion` \| 76.43 \| source_score \| rubric \| Higher is better \| \| `cue_quality` \| 71.62 \| source_score \| rubric \| Higher is better \| \| `hook_strength` \| 79.06 \| source_score \| rubric \| Higher is better \| \| `length_adherence` \| 77.59 \| source_score \| rubric \| Higher is better \| \| `slop` \| 84.75 \| source_score \| rubric \| Higher is better \| \| `slop_score` \| 95.32 \| source_score \| rubric \| Higher is better \| \| `substance_accuracy` \| 81.54 \| source_score \| rubric \| Higher is better \| \| `tone_voice` \| 74.04 \| source_score \| rubric \| Higher is better \| \| `writing_quality` \| 76.68 \| source_score \| rubric \| Higher is better \| \| `youtube_best_practices` \| 71.07 \| source_score \| rubric \| Higher is better \| ### Configuration provider claude-code Reasoning effort medium scoreScope 10_task_current sourceConfiguration claude-haiku-5-5-medium thinkingEnabled true ### Reported statistics Uncertainty Reported interval: 1,560.5–1,658.9 interval [1560.5,1658.9] rank 69 runCount 5 ### Source [Original source](https://benchmark.towardsai.com/data/leaderboard.json) Source tonebench Original model label Claude Haiku 5.5 (medium) Evaluated 2026-10-08 Observed 2026-10-22T04:40:14.102Z Evidence SHA-256 `4264338337f418d3ded7ace250cad64fe12cacbd4b79a312bfaf0ae9268a01c3` Source locator `/rows/68` | | | | | | | | [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 41.63% | — | 63 / 125 | $0.13 | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.4163 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.462 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.13 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium sourceVersion v1_1 subset main ### Reported statistics flaggedRate 0 sampleSize 100 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Haiku 5.5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Haiku%205.5/medium/main` | | | | | | | | [ARC-AGI-1](https://benchize.com/benchmarks/arc-prize%3Av1_Semi_Private.md) | 57.33% | — | 155 / 245 | 0.00843usd per task | [arc prize · v1](https://arcprize.org/media/data/leaderboard/v1.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.5733333333333333 \| score_fraction \| v1_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.008431990999999998 \| usd_per_task \| v1_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v1_Semi_Private harness Not reported modelGroup anthropic-claude-haiku-5-5 modelType CoT Reasoning effort medium sourceModelVersion anthropic-claude-haiku-5-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v1.json) Source arc prize Original model label Claude Haiku 5.5 (Medium) Source version v1 Observed 2026-10-22T05:20:04.066Z Evidence SHA-256 `2bf68d22dafba37047d07ad833ebc0e8199c9aa2f9eeaed50c75c1b704462836` Source locator `/evaluations/273` | | | | | | | | [FrontierCode 1.1 extended](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Aextended.md) | 55.04% | — | 65 / 125 | $0.1 | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.5504 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.6067 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.1021 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium sourceVersion v1_1 subset extended ### Reported statistics flaggedRate 0 sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Haiku 5.5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Haiku%205.5/medium/extended` | | | | | | | | [ARC-AGI-2](https://benchize.com/benchmarks/arc-prize%3Av2_Semi_Private.md) | 9.44% | — | 149 / 243 | 0.01usd per task | [arc prize · v2](https://arcprize.org/media/data/leaderboard/v2.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.09444444444444443 \| score_fraction \| v2_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.014974957499999999 \| usd_per_task \| v2_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v2_Semi_Private harness Not reported modelGroup anthropic-claude-haiku-5-5 modelType CoT Reasoning effort medium sourceModelVersion anthropic-claude-haiku-5-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v2.json) Source arc prize Original model label Claude Haiku 5.5 (Medium) Source version v2 Observed 2026-10-22T05:20:04.306Z Evidence SHA-256 `4351eb696e78113b0459e9bb5f0258318b905efef34f473dcea51ce641b0d94d` Source locator `/evaluations/274` | | | | | | | --- Cite as: Claude Haiku 5.5Medium — Benchize, https://benchize.com/models/claude-haiku-5-5-medium (retrieved 2026-10-22)