Claude 3.7 Sonnet vs Claude Opus 5.5 (Canary Checkpoint)
A direct, empirical evaluation of Claude 3.7 Sonnet (Anthropic) against Claude Opus 5.5 (Canary Checkpoint) (Anthropic).
Claude 3.7 Sonnet
Developed by Anthropic · Proprietary parameters
Enterprise software engineering, full-repo refactoring, and agentic workflows.
Claude Opus 5.5 (Canary Checkpoint)
Developed by Anthropic · Frontier Mixture-of-Experts Architecture parameters
Autonomous repository issue resolution (81.4% SWE-bench Verified), native 3D glTF/OBJ mesh synthesis, and sub-300ms time-to-first-token.
| Metric | Claude 3.7 Sonnet | Claude Opus 5.5 (Canary Checkpoint) |
|---|---|---|
| SWE-bench Verified | 70.3% | 81.4% |
| MMLU-Pro | 82.1% | 94.2% |
| MATH-500 | 96.2% | 97.9% |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Input Pricing (per 1M) | $3.00 | $5.00 |
| Output Pricing (per 1M) | $15.00 | $25.00 |