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.

Claude Fable 5.1Qwen3.8-Max
Next to Claude Fable 5.1
Presets
Claude Fable 5.1
191175–208
WeightsClosed
ReleasedSep 2026
Price in / out$10 / $50
Context1M
Core tests taken6 of 9
Qwen3.8-Max
170154–187
WeightsClosed
ReleasedAug 2026
Price in / out–
Context–
Core tests taken2 of 9

Claude Fable 5.1 leads Qwen3.8-Max by 21 points, ahead on 1 of 1 shared core tests.

Test by testindependent results

Claude Fable 5.1Qwen3.8-Max
0%25%50%75%100%REASONING & KNOWLEDGESimpleQA VerifiedSimpleQA VerifiedMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)Chess puzzlesChess puzzlesFrontierMath (tier 4)FrontierMath (tier 4)CODINGFrontierSWEFrontierSWEAGENTSDTBenchDTBenchLMCALMCAMystery game puzzlesMystery game puzzles

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.