Grok 4.3: healthcare benchmark results
xAI · 3 boards · snapshot reviewed September 28, 2026
The index currently holds 3 results for Grok 4.3: 53.7% on MAST (Medical AI Superintelligence Test) (8 of 8 indexed rows), 38.07% on MedCode (Vals AI) (69 of 102 indexed rows), 74.40% on MedScribe (Vals AI) (77 of 104 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 |
|---|---|---|---|
| MAST (Medical AI Superintelligence Test) | 53.7% | 8 of 8 source board: 11 | 2026-08 |
| MedCode (Vals AI) model ID grok/grok-4.3; temperature=1; top_p=0.95; max_output_tokens=30000; standard error 2.081 pp; $0.022202/test; source snapshot 2026-09-26; run date not published | 38.07% | 69 of 102 | 2026-09-26 |
| MedScribe (Vals AI) model ID grok/grok-4.3; temperature=1; top_p=0.95; max_output_tokens=30000; standard error 2.019 pp; $0.015293/test; source snapshot 2026-09-26; run date not published | 74.40% | 77 of 104 | 2026-09-26 |
Position follows the rows held in this index and is not a controlled comparison. Sources may use different graders or task subsets. Positions include 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 Grok 4.3 scored on?
As of September 28, 2026, Grok 4.3 has indexed results on 3 tracked benchmarks: MAST (Medical AI Superintelligence Test), MedCode (Vals AI), MedScribe (Vals AI).
Which results are indexed for Grok 4.3?
Grok 4.3 stands at 53.7% on MAST (Medical AI Superintelligence Test) (8 of 8 indexed rows), 38.07% on MedCode (Vals AI) (69 of 102 indexed rows), 74.40% on MedScribe (Vals AI) (77 of 104 indexed rows).
The benchmarks themselves are described on their pages, linked in the table above, and the whole field is on the index.