# Claude Fable 5Medium

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Anthropic

Canonical URL: https://benchize.com/models/claude-fable-5-medium
Last updated: Thu, 22 Oct 2026 07:10:12 GMT

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Anthropic

## Benchmarks

| Benchmark | Score | ± | Rank | Cost | Latency | Source |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [FrontierCode 1.1 main](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Amain.md) | 49.82% | — | 17 / 125 | $7.15 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.4982 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.546 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 7.1539 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium 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/medium/main` |  |  |  |  |  |  |  |
| [DeepSWE](https://benchize.com/benchmarks/deepswe%3Av1.1.md) | 65.37% | Range 60.95–69.79% | 26 / 70 | $6.09 | 810.9s | [deepswe](https://deepswe.datacurve.ai/artifacts/v1.1/leaderboard-live.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `pass_at_1` \| 0.6536697247706422 \| score_fraction \| scored_rollout_attempts \| Higher is better \| \| `pass_at_4` \| 0.831858407079646 \| score_fraction \| tasks_with_one_passing_rollout \| Higher is better \| \| `cost_per_attempt` \| 6.088186528935186 \| USD \| scored_attempt \| Lower is better \| \| `duration` \| 810.8967150733945 \| seconds \| scored_attempt \| Lower is better \| ### Configuration harness mini-swe-agent Reasoning effort medium sourceConfiguration mini_swe_agent_claude_fable_5_medium ### Reported statistics Uncertainty Reported interval: 60.95–69.79% interval [0.6094504359782605,0.6978890135630239] intervalMethod 95% run-to-run: SE across repeated whole-benchmark passes (1.96 * std(runs)/sqrt(R)) runCount 4 sampleSize 436 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/25` |  |  |  |  |  |  |  |
| [ARC-AGI-2](https://benchize.com/benchmarks/arc-prize%3Av2_Semi_Private.md) | 82.5% | — | 39 / 243 | 1.93usd per task | — | [arc prize · v2](https://arcprize.org/media/data/leaderboard/v2.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.825 \| score_fraction \| v2_Semi_Private \| Higher is better \| \| `cost_per_task` \| 1.9269780833333334 \| 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 medium sourceModelVersion anthropic-claude-fable-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v2.json) Source arc prize Original model label Claude Fable 5 (Medium) Source version v2 Observed 2026-10-22T05:20:04.306Z Evidence SHA-256 `4351eb696e78113b0459e9bb5f0258318b905efef34f473dcea51ce641b0d94d` Source locator `/evaluations/189` |  |  |  |  |  |  |  |
| [FrontierCode 1.1 extended](https://benchize.com/benchmarks/frontiercode%3Av1_1%3Aextended.md) | 62.79% | — | 13 / 125 | $5.84 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.6279 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.6825 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 5.8428 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium 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/medium/extended` |  |  |  |  |  |  |  |
| [FrontierCode 1 extended](https://benchize.com/benchmarks/frontiercode%3Av1%3Aextended.md) | 57.4% | — | 4 / 39 | $5 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.574 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.614 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 5 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium 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/medium/extended` |  |  |  |  |  |  |  |
| [FrontierCode 1 main](https://benchize.com/benchmarks/frontiercode%3Av1%3Amain.md) | 41.5% | — | 4 / 39 | $6 | — | [frontiercode](https://cognition.com/data/frontiercode-leaderboard/data.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.415 \| score_fraction \| blocking_criteria_adjusted \| Higher is better \| \| `correct` \| 0.443 \| score_fraction \| raw_rubric \| Higher is better \| \| `cost` \| 6 \| USD \| per_rollout \| Lower is better \| ### Configuration harness claude-code Reasoning effort medium 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/medium/main` |  |  |  |  |  |  |  |
| [ARC-AGI-1](https://benchize.com/benchmarks/arc-prize%3Av1_Semi_Private.md) | 92.5% | — | 52 / 245 | 0.66usd per task | — | [arc prize · v1](https://arcprize.org/media/data/leaderboard/v1.json) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 0.925 \| score_fraction \| v1_Semi_Private \| Higher is better \| \| `cost_per_task` \| 0.6638002000000002 \| 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 medium sourceModelVersion anthropic-claude-fable-5-medium thinkingEnabled true ### Source [Original source](https://arcprize.org/media/data/leaderboard/v1.json) Source arc prize Original model label Claude Fable 5 (Medium) Source version v1 Observed 2026-10-22T05:20:04.066Z Evidence SHA-256 `2bf68d22dafba37047d07ad833ebc0e8199c9aa2f9eeaed50c75c1b704462836` Source locator `/evaluations/188` |  |  |  |  |  |  |  |

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