The Model Index
Up to four models

Claude Opus 5.5 vs Muse Wonder

On the index (GPT-4 = 100), Claude Opus 5.5 scores 197 and Muse Wonder 182. Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.

Next to Claude Opus 5.5
Presets
Claude Opus 5.5
197181–214
WeightsClosed
ReleasedSep 2026
Price in / out$4.0 / $20
Context1M
Core tests taken6 of 9
Muse Wonder
182166–199
WeightsClosed
ReleasedOct 2026
Price in / out$4.0 / $20
Context1.05M
Core tests taken1 of 9

Claude Opus 5.5 leads Muse Wonder by 15 points, ahead on 1 of 1 shared core tests, at a similar price.

Test by testthird-party results

Claude Opus 5.5Muse Wonder
0%25%50%75%100%REASONING & KNOWLEDGEEBR-benchEBR-benchMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)FrontierMath (tier 4)FrontierMath (tier 4)AGENTSDTBenchDTBenchFurniture assemblyFurniture assemblyLMCALMCAMystery game puzzlesMystery game puzzles
Every result as a table
TestClaude Opus 5.5Muse Wonder
Reasoning & knowledge
EBR-bench71.4%31.4%
Maths
FrontierMath (tiers 1-3)91.2%82.1%
AIME-style maths (OTIS mock)100.0%99.4%
FrontierMath (tier 4)95.0%70.7%
Agents
DTBench98.9%95.2%
Furniture assembly83.3%54.2%
LMCA68.2%56.8%
Mystery game puzzles71.0%51.0%

Tests at least two of these models have taken. Bold rows are the core tests.

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