# Claude Opus 5Low

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Anthropic

Canonical URL: https://benchize.com/models/claude-opus-5-low
Last updated: Thu, 22 Oct 2026 08:00:11 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) | 55.75% | — | 61 / 125 | $2.15 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.5575 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.6108 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 2.1469 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort low sourceVersion v1_1 subset extended ### Reported statistics flaggedRate 0.0041 sampleSize 150 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Opus 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Opus%205/low/extended` |  |  |  |  |  |  |  |
| [NC Bench](https://benchize.com/benchmarks/nc-bench%3Aoverall.md) | 92.06% | — | 39 / 144 | — | — | [nc bench](https://www.nc-bench.com/models) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 92.06 \| percent \| reported \| Higher is better \| \| `tooling` \| 99.75 \| percent \| category \| Higher is better \| \| `creative_writing` \| 88.87 \| percent \| category \| Higher is better \| \| `language` \| 99.46 \| percent \| category \| Higher is better \| \| `utility` \| 92.75 \| percent \| category \| Higher is better \| \| `reasoning` \| 88.95 \| percent \| category \| Higher is better \| \| `text_editing` \| 96.99 \| percent \| category \| Higher is better \| \| `rule_following` \| 72.36 \| percent \| category \| Higher is better \| \| `hallucination` \| 97.34 \| percent \| category \| Higher is better \| ### Configuration Reasoning effort low Model configuration Claude Opus 5 (Reasoning, Low) thinkingEnabled true ### Source [Original source](https://www.nc-bench.com/models) Source nc bench Original model label Claude Opus 5 (Reasoning, Low) Observed 2026-10-22T06:10:03.426Z Evidence SHA-256 `ec261022458543624b08a136d01f5a2f0666cd52ffb49c64d6ca983e8543d1b5` Source locator `/rows/48` |  |  |  |  |  |  |  |
| [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 41.95% | — | 60 / 125 | $2.68 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.4195 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.4663 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 2.678 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort low sourceVersion v1_1 subset main ### Reported statistics flaggedRate 0.0021 sampleSize 100 ### Source [Original source](https://cognition.com/data/frontiercode-leaderboard/data.json) Source frontiercode Original model label Claude Opus 5 Observed 2026-10-22T05:40:03.220Z Evidence SHA-256 `ff0040778b7bdf69c705ad7474f771fb5e53cfaf5cf8573b3a4614153543d75f` Source locator `/v1_1/data/Claude%20Opus%205/low/main` |  |  |  |  |  |  |  |
| [AutomationBench](https://benchize.com/benchmarks/zapier%3Aautomationbench.md) | 20.4% | — | 40 / 113 | $0.75 | — | [zapier](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 20.4 \| percent \| reported \| Higher is better \| \| `cost` \| 0.75 \| USD \| per_task \| Lower is better \| ### Configuration benchmarkVersion 1.0.6 costFootnote false Fallback policy Not reported Reasoning effort low Model configuration Claude Opus 5 (Low) thinkingEnabled true ### Reported statistics rank 40 ### Source [Original source](https://framerusercontent.com/sites/4WTSl4BNjd1q9QFEFibC6h/lOvLnhItj8S8-1vyjH_s33Jn-WmUXPmiJ5Diajl0Q38.CMutaHYl.mjs) Source zapier Original model label Claude Opus 5 (Low) Observed 2026-10-21T16:34:56.783Z Evidence SHA-256 `43978e38f018789fa59c11de5328abe9e5905bfa9a5a4d601fa3aa4d9c153b0d` Source locator `/rows/39` |  |  |  |  |  |  |  |
| [DeepSWE](https://benchize.com/benchmarks/deepswe%3Av1.1.md) | 58.13% | Range 55.8–60.46% | 36 / 70 | $1.66 | 468.88s | [deepswe](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `pass_at_1` \| 0.5812917594654788 \| score_fraction \| scored_rollout_attempts \| Higher is better \| \| `pass_at_4` \| 0.8495575221238938 \| score_fraction \| tasks_with_one_passing_rollout \| Higher is better \| \| `cost_per_attempt` \| 1.6626223919821828 \| USD \| scored_attempt \| Lower is better \| \| `duration` \| 468.87542417149217 \| seconds \| scored_attempt \| Lower is better \| ### Configuration harness mini-swe-agent Reasoning effort low sourceConfiguration mini_swe_agent_claude_opus_5_low ### Reported statistics Uncertainty Reported interval: 55.8–60.46% interval [0.5579848799986361,0.6045986389323216] intervalMethod 95% run-to-run: SE across repeated whole-benchmark passes (1.96 * std(runs)/sqrt(R)) runCount 4 sampleSize 449 taskCount 113 ### Source [Original source](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) Source deepswe Original model label claude-opus-5 Observed 2026-10-22T03:50:05.889Z Evidence SHA-256 `a7c15d66288fd249c020b9931c017b92d1a3b90e480b3ff34974b752bd030019` Source locator `/rows/35` |  |  |  |  |  |  |  |
| [BullshitBench v2](https://benchize.com/benchmarks/bullshitbench%3Av2.md) | 73% | — | 21 / 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` \| 0.73 \| score_fraction \| all_attempts \| Higher is better \| \| `red_rate` \| 0.08 \| score_fraction \| all_attempts \| Lower is better \| \| `refusal_rate` \| 0.09 \| score_fraction \| all_attempts \| Lower is better \| \| `avg_score` \| 1.7106 \| score \| judge_grade_0_to_2 \| Higher is better \| ### Configuration Reasoning effort low suite v2 thinkingEnabled true ### Reported statistics acceptedCount 8 answeredCount 91 clearCount 73 errorCount 0 partialCount 10 rank 16 refusalCount 9 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-opus-5 Source version v2 Observed 2026-10-22T03:10:12.603Z Evidence SHA-256 `98b485e08764d1c97144bc4f7b28ced1a96d50850947c775870dfda0e5d749b5` Source locator `/rows/15` |  |  |  |  |  |  |  |
| [GPQA Diamond](https://benchize.com/benchmarks/gpqa-diamond.md) | 87.88% | SE ±2.33 pp | 39 / 126 | — | — | [epoch ai · GPQA diamond](https://epoch.ai/data/benchmark_data.zip#file=gpqa_diamond.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.8787878787878788 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.8787878787878788 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion GPQA diamond reasoningBudget Not reported Reasoning effort low sourceModelVersion claude-opus-5_low ### Reported statistics Uncertainty Standard error: ±2.33 pp standardError 0.02325315795194205 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=gpqa_diamond.csv) Source epoch ai Original model label claude-opus-5 Source version GPQA diamond Evaluated 2026-08-06T22:21:06.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `9ef0b938bdd8406b029d595983ee8ad3a80bd9d64b82605b91b5ce39ba650c39` Source locator `/rows/124` |  |  |  |  |  |  |  |
| [Chess Puzzles](https://benchize.com/benchmarks/epoch-ai%3Achess_puzzles.md) | 27% | SE ±4.46 pp | 42 / 64 | — | — | [epoch ai · Chess Puzzles](https://epoch.ai/data/benchmark_data.zip#file=chess_puzzles.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.27 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.27 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion Chess Puzzles reasoningBudget Not reported Reasoning effort low sourceModelVersion claude-opus-5_low ### Reported statistics Uncertainty Standard error: ±4.46 pp standardError 0.044619604333847374 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=chess_puzzles.csv) Source epoch ai Original model label claude-opus-5 Source version Chess Puzzles Evaluated 2026-10-13T13:13:14.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `a5b99d6d35252907b04e9a802873a9754ecc0248be92a1ebbd2ef0450e4bb015` Source locator `/rows/135` |  |  |  |  |  |  |  |
| [OTIS Mock AIME 2024–2025](https://benchize.com/benchmarks/epoch-ai%3Aotis_mock_aime_2024_2025.md) | 93.33% | SE ±3.76 pp | 38 / 124 | — | — | [epoch ai · OTIS Mock AIME 2024-2025](https://epoch.ai/data/benchmark_data.zip#file=otis_mock_aime_2024_2025.csv) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.9333333333333333 \| score_fraction \| Best score (across scorers) \| Higher is better \| \| `mean_score` \| 0.9333333333333333 \| score_fraction \| mean_score \| Higher is better \| ### Configuration benchmarkVersion OTIS Mock AIME 2024-2025 reasoningBudget Not reported Reasoning effort low sourceModelVersion claude-opus-5_low ### Reported statistics Uncertainty Standard error: ±3.76 pp standardError 0.03760507165451774 ### Source [Original source](https://epoch.ai/data/benchmark_data.zip#file=otis_mock_aime_2024_2025.csv) Source epoch ai Original model label claude-opus-5 Source version OTIS Mock AIME 2024-2025 Evaluated 2026-08-06T22:21:20.000Z Observed 2026-10-22T03:00:05.281Z Evidence SHA-256 `b7c9da8c0587c82f1e0d814ceb496c24308380b997a16203b6e5d39eb07f4f50` Source locator `/rows/130` |  |  |  |  |  |  |  |

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Cite as: Claude Opus 5Low — Benchize, https://benchize.com/models/claude-opus-5-low (retrieved 2026-10-22)