RealmPathology
Models interpret real anatomic pathology reports and must not claim a diagnosis, stage or treatment the report does not support. Rubrics have 772 positive and 299 penalty criteria.
The current release rebuilt every rubric around four clinical failure modes and added penalties. micro1 says scores are not continuous with the earlier release. 13 models.
- Made by
- micro1
- Released
- October 2026
- Kind
- Medicine
- Level
- Expert
- Scored
- Graded by a model
- Answers
- Open-ended
- Strongest model tested
- GPT-6 Astra #3 on the capability index
- Last model added
- October 2026
- Scores refreshed
- November 12th, 2026
Claude Fable 5.1 leads with 78%
Best score per model from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best.
- 1 Claude Fable 5.1 max 78%
- 2 Claude Sonnet 5.5 max 77.3%
- 3 Claude Opus 5.5 max 77%
- 4
Muse Wonder max 76.4% - 5 Muse Spark 1.3 xhigh 75.8%
- 6 Claude Opus 5 max 75.2%
- 7 Muse Spark 1.1 xhigh 74.9%
- 8 Grok 4.7 xhigh 73.1%
- 9 Grok 4.6 high 72.1%
- 10 Claude Sonnet 5 71.7%
- 11 GPT-6 Astra max 70.3%
- 12 GPT-6 Sol max 69.3%
- 13
Gemini 3.8 Flash high 66.3%
Source: Official RealmPathology leaderboard
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Claude Fable 5.1 | 78% | max | Sep 2026 | Official leaderboard |
| 2 | Claude Sonnet 5.5 | 77.3% | max | Sep 2026 | Official leaderboard |
| 3 | Claude Opus 5.5 | 77% | max | Sep 2026 | Official leaderboard |
| 4 | Muse Wonder | 76.4% | max | Oct 2026 | Official leaderboard |
| 5 | Muse Spark 1.3 | 75.8% | xhigh | Sep 2026 | Official leaderboard |
| 6 | Claude Opus 5 | 75.2% | max | Jul 2026 | Official leaderboard |
| 7 | Muse Spark 1.1 | 74.9% | xhigh | Jul 2026 | Official leaderboard |
| 8 | Grok 4.7 | 73.1% | xhigh | Sep 2026 | Official leaderboard |
| 9 | Grok 4.6 | 72.1% | high | Aug 2026 | Official leaderboard |
| 10 | Claude Sonnet 5 | 71.7% | Jun 2026 | Official leaderboard | |
| 11 | GPT-6 Astra | 70.3% | max | Sep 2026 | Official leaderboard |
| 12 | GPT-6 Sol | 69.3% | max | Sep 2026 | Official leaderboard |
| 13 | Gemini 3.8 Flash | 66.3% | high | Sep 2026 | Official leaderboard |
Number one over time
Lab claims count from the day the card came out, independent runs from the model’s release.
Source: Official RealmPathology leaderboard
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Source: Official RealmPathology leaderboard
No lab model card reports it yet
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.
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