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Claude Opus 4.1

Released 5 Aug 2025proprietaryAlso written as anthropic/claude-opus-4-1-20250805-thinking, claude-opus-4-1-20250805, anthropic/claude-opus-4-1-20250805, claude-opus-4-1-20250805-thinking, Claude Opus 4.1 (Thinking), Claude Opus 4.1 (Nonthinking)

4 results on 2 of 13 boards, latest measured Sep 2026. Compare with other models

Clinical Benchmarks Index30.5Rank 53 of 1492 of 10 boardsAverage × multiplier 52.9 × 0.577 = 30.5This site’s own calculation. Working How it is computed

Results

Each line sits on its own board's scale. Tall tick: the board leader.

Documentation and coding

  1. MedScribe (Vals AI)
    model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
    73.90
    Rank 79 of 105Leader Claude Opus 5.5 91.43
    Official leaderboard
    Measured Sep 2026
  2. MedScribe (Vals AI)
    model ID anthropic/claude-opus-4-1-20250805; temperature=1; max_output_tokens=30000
    71.75
    Rank 88 of 105Leader Claude Opus 5.5 91.43
    Official leaderboard
    Measured Sep 2026
  3. MedCode (Vals AI)
    model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
    47.23
    Rank 32 of 103Leader Claude Opus 5 63.57
    Official leaderboard
    Measured Sep 2026
  4. MedCode (Vals AI)
    model ID anthropic/claude-opus-4-1-20250805; temperature=1; max_output_tokens=30000
    41.37
    Rank 51 of 103Leader Claude Opus 5 63.57
    Official leaderboard
    Measured Sep 2026

Index working

The Clinical Benchmarks Index is this site's own calculation: a weighted average of the board scores times a multiplier for the boards behind it. How it is computed

  • MedScribe (Vals AI)73.9073.9×0.25, near its ceilingNear its ceiling: leader 91.4, weight 0.25model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
  • MedCode (Vals AI)47.2347.2×0.911model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
Weighted average of 2 boards
52.9
Multiplier for 2 of 10 boards
× 0.577
Index
52.9 × 0.577 = 30.5

Score: the result on the board’s own 0 to 100 scale. Dot: this model; tick: the board’s leader. Weight: how much the board counts in the weighted average; bold where the board is near its ceiling and counts for less. Each result links to its quote and page; the line under it is the setting it was measured with.

Sources

The quote, page and document for each of the 4 results
  1. 79MedScribe (Vals AI) claude-opus-4-1-20250805-thinking 73.90
    Printed as 73.90%Official leaderboard, measured Sep 2026Configuration: model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
    Vals AI MedScribe leaderboard official leaderboard, Vals AI, 3 Sep 2026. Vals AI MedScribe leaderboard, View: All Models, Task: Overall, row 79 of 105 (Claude Opus 4.1 (Thinking)), Accuracy column; Updated 9/29/2026. Rendered BenchmarkView table; configuration from embedded astro-island BenchmarkView props, benchmarkView.default.tasks.overall["anthropic/claude-opus-4-1-20250805-thinking"].
    79 | Claude Opus 4.1 (Thinking) | 73.90%±1.97 | $15/$75 | 57.40s
    Every result from this document
  2. 88MedScribe (Vals AI) claude-opus-4-1-20250805 71.75
    Printed as 71.75%Official leaderboard, measured Sep 2026Configuration: model ID anthropic/claude-opus-4-1-20250805; temperature=1; max_output_tokens=30000
    Vals AI MedScribe leaderboard official leaderboard, Vals AI, 3 Sep 2026. Vals AI MedScribe leaderboard, View: All Models, Task: Overall, row 88 of 105 (Claude Opus 4.1 (Nonthinking)), Accuracy column; Updated 9/29/2026. Rendered BenchmarkView table; configuration from embedded astro-island BenchmarkView props, benchmarkView.default.tasks.overall["anthropic/claude-opus-4-1-20250805"].
    88 | Claude Opus 4.1 (Nonthinking) | 71.75%±2.02 | $15/$75 | 38.04s
    Every result from this document
  3. 32MedCode (Vals AI) claude-opus-4-1-20250805-thinking 47.23
    Printed as 47.23%Official leaderboard, measured Sep 2026Configuration: model ID anthropic/claude-opus-4-1-20250805-thinking; temperature=1; max_output_tokens=30000
    Vals AI MedCode leaderboard official leaderboard, Vals AI, 29 Sep 2026. MedCode leaderboard, Overall task, All Models expanded, rank 32 of 103; Accuracy column; board Updated 9/29/2026. Rendered table row; configuration from embedded BenchmarkView props benchmarkView.default.tasks.overall["anthropic/claude-opus-4-1-20250805-thinking"].
    32 | Claude Opus 4.1 (Thinking) | 47.23%±2.07 | $15/$75 | 33.26s
    Every result from this document
  4. 51MedCode (Vals AI) claude-opus-4-1-20250805 41.37
    Printed as 41.37%Official leaderboard, measured Sep 2026Configuration: model ID anthropic/claude-opus-4-1-20250805; temperature=1; max_output_tokens=30000
    Vals AI MedCode leaderboard official leaderboard, Vals AI, 29 Sep 2026. MedCode leaderboard, Overall task, All Models expanded, rank 51 of 103; Accuracy column; board Updated 9/29/2026. Rendered table row; configuration from embedded BenchmarkView props benchmarkView.default.tasks.overall["anthropic/claude-opus-4-1-20250805"].
    51 | Claude Opus 4.1 (Nonthinking) | 41.37%±1.96 | $15/$75 | 13.08s
    Every result from this document

Other Anthropic models: Claude 3.7 Sonnet, Claude Fable 5, Claude Fable 5.1, Claude Haiku 4.5, Claude Haiku 5.5, Claude Opus 4.5, Claude Opus 4.6, Claude Opus 4.7, Claude Opus 4.8, Claude Opus 5, Claude Opus 5.5, Claude Sonnet 4, Claude Sonnet 4.5, Claude Sonnet 4.6, Claude Sonnet 5, Claude Sonnet 5.5