Comparing 2 models

Claude Opus 5.5 vs Muse Spark 1.2

Facts first, then task-specific rankings. A highlighted cell is better only for that row, not universally.

metric
Model 1Claude Opus 5.5
Model 2Muse Spark 1.2
Best for
Code Completion (#1)
Frontend & UI (#3)
Provider
anthropic
meta
Context
1M
1.0MBest
Input / 1M
$4
$1.25Best
Output / 1M
$20
$4.25Best
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
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Released
Sep 18, 2026
Aug 5, 2026