Claude Opus 4.8: healthcare benchmark results
Anthropic · 4 boards · updated September 8, 2026
The index currently holds 4 results for Claude Opus 4.8: 0.558 on HealthBench Professional (9 of 22 indexed rows), 59.3 on HealthBench (5 of 18 indexed rows), 53.22% on MedCode (Vals AI) (8 of 11 indexed rows), 71.7 on MedXpertQA (MM) (8 of 15 indexed rows). Scores below sit on different scales and come from different graders, so read each against its own benchmark, never against the others.
Results by benchmark
| benchmark | score | index position | as of |
|---|---|---|---|
| HealthBench Professional | 0.558 | 9 of 22 | 2026-05 |
| HealthBench | 59.3 | 5 of 18 | 2026-06 |
| MedCode (Vals AI) | 53.22% | 8 of 11 source board: 85 | 2026-09 |
| MedXpertQA (MM) | 71.7 | 8 of 15 |
Position follows the rows held in this index, including separate configurations. A source board may contain additional rows; its size is listed separately when it differs. Config caveats, where a source noted any, are on each benchmark's page, and the document behind each score is cited on the sources page.
Which healthcare benchmarks is Claude Opus 4.8 scored on?
As of September 8, 2026, Claude Opus 4.8 holds current results on 4 tracked benchmarks: HealthBench Professional, HealthBench, MedCode (Vals AI), MedXpertQA (MM).
How does Claude Opus 4.8 rank on them?
Claude Opus 4.8 stands at 0.558 on HealthBench Professional (9 of 22 indexed rows), 59.3 on HealthBench (5 of 18 indexed rows), 53.22% on MedCode (Vals AI) (8 of 11 indexed rows), 71.7 on MedXpertQA (MM) (8 of 15 indexed rows).
The benchmarks themselves are described on their pages, linked in the table above, and the whole field is on the index.