142131–154Index score#83 of 229 models
3/ 8Core tests taken3 of 6 areas · plus 9 anchor tests
−42Versus the frontier at releasebest then: Claude Fable 5
$0.30/ $2.5Price per million tokensinput / output, list price
1.05MContext windowtokens it reads at once
Where it sitson the frontier
o3 reached this score 15 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.