Clinical Benchmarks
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GPT OSS 20B

Released 5 Aug 2025131K context21Bopen

7 results on 1 of 13 boards, 6 of them on secondary measures, latest measured Aug 2026. Compare with other models

Clinical Benchmarks Index24.1Rank 86 of 1491 of 10 boardsAverage × multiplier 59.1 × 0.408 = 24.1This site’s own calculation. Working How it is computed

Results

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

Safety

  1. MedPIC
    zero-shot; independent questions; exact option-set match
    59.1
    Rank 14 of 28Leader Gemini-3.1-Pro 80.7
    Independent run
    Measured Aug 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

  • MedPIC59.159.1×0.482, near its ceilingNear its ceiling: leader 80.7, weight 0.482zero-shot; independent questions; exact option-set match
One board, so its score
59.1
Multiplier for 1 of 10 boards
× 0.408
Index
59.1 × 0.408 = 24.1

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.

Secondary measures

Safety

  1. MedPIC, Risk deactivation accuracy
    zero-shot; independent questions; exact option-set match
    48.5
    Rank 8 of 28Leader Gemini-3.1-Pro 77.9
    Independent run
    Measured Aug 2026
  2. MedPIC, Linked counterfactual pair accuracy
    zero-shot; independent questions; exact option-set match
    24.7
    Rank 10 of 28Leader Gemini-3.1-Pro 48.3
    Independent run
    Measured Aug 2026
  3. MedPIC, Guideline-following accuracy (GF)
    zero-shot; independent questions; exact option-set match
    66.5
    Rank 13 of 28Leader Gemini-3.1-Pro 87.7
    Independent run
    Measured Aug 2026
  4. MedPIC, Counterfactual accuracy (CF)
    zero-shot; independent questions; exact option-set match
    47.5
    Rank 13 of 28Leader Gemini-3.1-Pro 69.9
    Independent run
    Measured Aug 2026
  5. MedPIC, Risk activation accuracy
    zero-shot; independent questions; exact option-set match
    52.1
    Rank 21 of 28Leader MedGemma-27B-Text 76.1
    Independent run
    Measured Aug 2026
  6. MedPIC, Published GF-minus-CF accuracy gap
    zero-shot; independent questions; exact option-set match
    19.0
    Descriptive measure, not ranked
    Independent run
    Measured Aug 2026

Sources

The quote, page and document for each of the 7 results
  1. 14MedPIC zero-shot 59.1
    Printed as 59.1Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column Overall; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  2. 13MedPIC, Guideline-following accuracy (GF) zero-shot 66.5
    Printed as 66.5Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column GF; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  3. 13MedPIC, Counterfactual accuracy (CF) zero-shot 47.5
    Printed as 47.5Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column CF; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  4. 10MedPIC, Linked counterfactual pair accuracy zero-shot 24.7
    Printed as 24.7Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column Pair; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  5. 21MedPIC, Risk activation accuracy zero-shot 52.1
    Printed as 52.1Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column Activation; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  6. 8MedPIC, Risk deactivation accuracy zero-shot 48.5
    Printed as 48.5Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column Deactivation; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document
  7. –MedPIC, Published GF-minus-CF accuracy gap zero-shot 19.0
    Printed as 19.0Independent run, measured Aug 2026Configuration: zero-shot; independent questions; exact option-set match
    Evaluating Counterfactual Sensitivity to Patient Information in Medication-Safety Reasoning paper, Zhitian Hou, Yuhang Liu, Pengkai Wang, Zeyu Liu, Guanghao Zhu, Zheng Liu, Shuo Cai, Congkai Xie, Zhijie Sang, Kun Zeng, Hongxia Yang (The Hong Kong Polytechnic University; InfiX.ai; Sun Yat-sen University), 4 Aug 2026. arXiv:2608.03028v1, Section 4, Table 2 (#S4.T2), row GPT-OSS-20B, column Δ_GF−CF; row order: Model | Overall | GF | CF | Δ_GF−CF | Activation | Deactivation | Pair
    GPT-OSS-20B | 59.1 | 66.5 | 47.5 | 19.0 | 52.1 | 48.5 | 24.7
    Every result from this document

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