125114–136Index score#128 of 229 models
5/ 8Core tests taken4 of 6 areas · plus 14 anchor tests
−16Versus the frontier at releasebest then: Gemini 2.5 ProReplaced by GPT-5 $2.0/ $8.0Price per million tokensinput / output, list price
1.05MContext windowtokens it reads at once
Where it sitson the frontier
o1 reached this score 4 months earlier.
Test resultsby area · tick = best by any model
Reasoning & knowledgeevidence
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
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
Replaced by GPT-5; it no longer leads any category among current models.
Where this model places in the top three of today's models, on category leaderboards and on our core tests.