167156–178Index score#25 of 229 models
4/ 8Core tests taken4 of 6 areas · plus 11 anchor tests
−20Versus the frontier at releasebest then: Claude Opus 5
$1.32/ $3.96Price per million tokensinput / output, list price
1.05MContext windowtokens it reads at once
Where it sitson the frontier
GPT-5.3-Codex reached this score 6 months earlier.
Test resultsby area · tick = best by any model
Reasoning & knowledgeevidence
Humanity's Last Examno result Codingevidence
SWE-bench Verifiedno result Long tasksno evidence yet
METR time horizonno result Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.
What others sayrank on each leaderboard
The Model Indexindependent tests, our method#25of 219 · 167
Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.
Best attop three among current models
Not in the top three among current models on any category we track.
Where this model places in the top three of today's models, on category leaderboards and on our core tests.