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Claude Opus 5.5 vs Muse Wonder Full

SpecClaude Opus 5.5Muse Wonder Full
Respan Index74.1 (#1)70.9 (#5)
Blended price per 1M$4-
Context window1M-
Input / output per 1M$2 / $10-
Max output128K-
Inputtext, visiontext, vision, video, audio
Released2026-09-222026-10-12

Respan Index by category

Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.

CategoryClaude Opus 5.5Muse Wonder Full
Coding68.3 Claude Opus 5.562.9 Muse Wonder Full
Agents79.1 Claude Opus 5.574.1 Muse Wonder Full
Reasoning83.9 Claude Opus 5.582.8* Muse Wonder Full
Knowledge & language70.4 Claude Opus 5.570.5* Muse Wonder Full
Human preference61.4 Claude Opus 5.559.3 Muse Wonder Full

* Estimated: no published scores in that category. How the Respan Index works

Benchmarks both report

Claude Opus 5.5 leads on 3 of the 3 benchmarks both report. Higher is better. Each score links to where it was published.

BenchmarkClaude Opus 5.5Muse Wonder Full
LMArena Agent (LMArena)0.20940.1009
LMArena WebDev (LMArena)18101725
Terminal-Bench 4.0 (Vals AI)65.2%58.1%

FAQ

Is Claude Opus 5.5 better than Muse Wonder Full?

Claude Opus 5.5 scores 74.1 on the Respan Index (#1), ahead of Muse Wonder Full at 70.9 (#5). Claude Opus 5.5 leads on 3 of the 3 benchmarks both report.

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