Claude Opus 5.5 vs Muse Spark 1.3 (xhigh)
A direct, empirical evaluation of Claude Opus 5.5 (Anthropic) against Muse Spark 1.3 (xhigh) (Meta AI).
Claude Opus 5.5
Developed by Anthropic · Proprietary Frontier Reasoner parameters
Autonomous enterprise codebase migrations, GitHub Copilot multi-file edits, SWE-bench Pro issue resolution (89.9%), and CodeRabbit automated reviews.
Muse Spark 1.3 (xhigh)
Developed by Meta AI · Proprietary Multimodal parameters
Autonomous codebase refactoring, terminal execution, million-token long context retrieval, and agentic workflows.
| Metric | Claude Opus 5.5 | Muse Spark 1.3 (xhigh) |
|---|---|---|
| SWE-bench Verified | 89.9% | 75.4% |
| MMLU-Pro | 92.4% | 88.4% |
| MATH-500 | 97.2% | 94.8% |
| Context Window | 500,000 tokens | 1,000,000 tokens |
| Input Pricing (per 1M) | $4.00 | $1.25 |
| Output Pricing (per 1M) | $20.00 | $5.00 |