Claude Opus 4.1 vs Claude Opus 4.5
8 shared benchmark contexts with reported scores and primary source links.
Claude Opus 4.1Claude Opus 4.5
Change models in the comparison toolShared benchmarks
8| Benchmark | Claude Opus 4.1 | Claude Opus 4.5 |
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Evaluation details for GPQA Diamond — Epoch AI harnessThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. | ||
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Evaluation details for GPQA Diamond — Vals AI harnessThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. Claude Opus 4.1 | ||
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Evaluation details for Humanity's Last Exam Full set — Scale AI evaluationThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. Claude Opus 4.1 | ||
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Evaluation details for Humanity's Last Exam Text only — Scale AI evaluationThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. Claude Opus 4.1 | ||
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Evaluation details for MMLU-Pro Original — Vals AI harnessThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. | ||
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Evaluation details for MMMU-Pro Vals AI harnessThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. | ||
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Evaluation details for SWE-bench Verified — Epoch AI harnessThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. | ||
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Evaluation details for SWE-bench Pro Private — Scale AI SWE-AgentThe recorded benchmark version, metric, and evaluator sets match. Evaluation methodology is not recorded by the registry. | ||