# Claude Opus 5.5Medium > Source: Benchize (https://benchize.com) — https://benchize.com/models/claude-opus-5-5-medium. When citing or reusing this content, credit "Benchize" and link to https://benchize.com/models/claude-opus-5-5-medium. Anthropic Canonical URL: https://benchize.com/models/claude-opus-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 | | | --- | --- | --- | --- | --- | --- | --- | | [ToneBench Scriptwriting](https://benchize.com/benchmarks/tonebench%3Ascripts.md) | 2,502.8 | Range 2,453–2,559.2 | 6 / 126 | — | [tonebench](https://benchmark.towardsai.com/data/leaderboard.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `elo` \| 2502.8 \| rating \| reported \| Higher is better \| \| `overall` \| 84.49 \| percent \| reported \| Higher is better \| \| `anti_slop_numbers` \| 78.92 \| source_score \| rubric \| Higher is better \| \| `continuity_emotion` \| 84.93 \| source_score \| rubric \| Higher is better \| \| `cue_quality` \| 82.84 \| source_score \| rubric \| Higher is better \| \| `hook_strength` \| 82.19 \| source_score \| rubric \| Higher is better \| \| `length_adherence` \| 92.72 \| source_score \| rubric \| Higher is better \| \| `slop` \| 87.85 \| source_score \| rubric \| Higher is better \| \| `slop_score` \| 96.78 \| source_score \| rubric \| Higher is better \| \| `substance_accuracy` \| 87.09 \| source_score \| rubric \| Higher is better \| \| `tone_voice` \| 81.19 \| source_score \| rubric \| Higher is better \| \| `writing_quality` \| 82.58 \| source_score \| rubric \| Higher is better \| \| `youtube_best_practices` \| 83.59 \| source_score \| rubric \| Higher is better \| ### Configuration provider claude-code Reasoning effort medium scoreScope 10_task_current sourceConfiguration claude-opus-5-5-medium thinkingEnabled true ### Reported statistics Uncertainty Reported interval: 2,453–2,559.2 interval [2453,2559.2] rank 6 runCount 5 ### Source [Original source](https://benchmark.towardsai.com/data/leaderboard.json) Source tonebench Original model label Claude Opus 5.5 (medium) Evaluated 2026-10-08 Observed 2026-10-22T04:40:14.102Z Evidence SHA-256 `4264338337f418d3ded7ace250cad64fe12cacbd4b79a312bfaf0ae9268a01c3` Source locator `/rows/5` | | | | | | | | [FrontierCode 1.1 extended](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Aextended.md) | 65.27% | — | 1 / 125 | $0.67 | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.6527 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.708 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.6666 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium sourceVersion v1_1 subset extended ### Reported statistics flaggedRate 0.004 sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Opus 5.5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Opus%205.5/medium/extended` | | | | | | | | [ARC-AGI-1](https://benchize.com/benchmarks/arc-prize%3Av1_Semi_Private.md) | 97.5% | — | 12 / 245 | 0.15usd per task | [arc prize · v1](https://arcprize.org/media/data/leaderboard/v1.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.975 \| score_fraction \| v1_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.15227524 \| usd_per_task \| v1_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v1_Semi_Private harness Not reported modelGroup anthropic-claude-opus-5-5 modelType CoT Reasoning effort medium sourceModelVersion anthropic-claude-opus-5-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v1.json) Source arc prize Original model label Claude Opus 5.5 (Medium) Source version v1 Observed 2026-10-22T05:20:04.066Z Evidence SHA-256 `2bf68d22dafba37047d07ad833ebc0e8199c9aa2f9eeaed50c75c1b704462836` Source locator `/evaluations/239` | | | | | | | | [AutomationBench](https://benchize.com/benchmarks/zapier%3Aautomationbench.md) | 29.53% | — | 20 / 113 | $0.65 | [zapier](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 29.53 \| percent \| reported \| Higher is better \| \| `cost` \| 0.65 \| USD \| per_task \| Lower is better \| ### Configuration benchmarkVersion 1.0.6 costFootnote false Fallback policy Provider default Reasoning effort medium Model configuration Claude Opus 5.5 (default fallbacks, Medium) thinkingEnabled true Fallback is enabled for refusals; this does not mean every task used a fallback model. ### Reported statistics rank 20 ### Source [Original source](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) Source zapier Original model label Claude Opus 5.5 (default fallbacks, Medium) Observed 2026-10-21T16:34:56.783Z Evidence SHA-256 `43978e38f018789fa59c11de5328abe9e5905bfa9a5a4d601fa3aa4d9c153b0d` Source locator `/rows/19` | | | | | | | | [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 54.64% | — | 1 / 125 | $0.8 | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.5464 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.596 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 0.8016 \| 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 Opus 5.5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Opus%205.5/medium/main` | | | | | | | | [ARC-AGI-2](https://benchize.com/benchmarks/arc-prize%3Av2_Semi_Private.md) | 87.5% | — | 23 / 243 | 0.34usd per task | [arc prize · v2](https://arcprize.org/media/data/leaderboard/v2.json) | | | ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.875 \| score_fraction \| v2_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.3369188 \| usd_per_task \| v2_Semi_Private \| Lower is better \| ### Configuration evaluationSplit v2_Semi_Private harness Not reported modelGroup anthropic-claude-opus-5-5 modelType CoT Reasoning effort medium sourceModelVersion anthropic-claude-opus-5-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v2.json) Source arc prize Original model label Claude Opus 5.5 (Medium) Source version v2 Observed 2026-10-22T05:20:04.306Z Evidence SHA-256 `4351eb696e78113b0459e9bb5f0258318b905efef34f473dcea51ce641b0d94d` Source locator `/evaluations/241` | | | | | | | --- Cite as: Claude Opus 5.5Medium — Benchize, https://benchize.com/models/claude-opus-5-5-medium (retrieved 2026-10-22)