The Model Index
Up to four models

Compare

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-5.6 Terra
Presets
GPT-5.6 Terra
178167–189
WeightsClosed
ReleasedJul 2026
Price in / out$2.0 / $12
Context1.05M
Core tests taken4 of 8
Kimi K3
172161–183
WeightsOpen
ReleasedJul 2026
Price in / out$0.68 / $10
Context1.05M
Core tests taken4 of 8

GPT-5.6 Terra leads Kimi K3 by 6 points, ahead on 4 of 4 shared core tests, at 1.5× the price.

Test by testindependent results · Epoch AI

GPT-5.6 TerraKimi K3

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.