The Model Index
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Side by side on the same independent tests, with price and context. The link in your address bar shares this exact comparison.

Next to GPT-6.1 Sol
Presets
GPT-6.1 Sol
184168–200
WeightsClosed
ReleasedSep 2026
Price in / out$2.0 / $10
Context1.05M
Core tests taken3 of 8
Step 5 Preview
~175estimated
WeightsClosed
ReleasedSep 2026
Price in / out–
Context–
Core tests taken–

GPT-6.1 Sol and Step 5 Preview are too close to call (9 points apart, within the uncertainty) (one score is an estimate).

Test by testindependent results · Epoch AI

GPT-6.1 SolStep 5 Preview

These models share no independent tests yet.

Only tests that at least two of these models have taken. Bold rows are the core tests shown on every profile; all of these results inform the index score. Task length (METR) is listed below the chart because it is a duration, not a percentage.