Claude Opus 5.5
Autonomous enterprise codebase migrations, GitHub Copilot multi-file edits, SWE-bench Pro issue resolution (89.9%), and CodeRabbit automated reviews.
SWE-bench Verified
89.9%
MMLU-Pro
92.4%
MATH-500
97.2%
Context Window
500,000 tokens
| Specification | Value |
|---|---|
| Developer / Lab | Anthropic |
| Parameters Total | Proprietary Frontier Reasoner |
| Parameters Active | Heavy Reasoning Core |
| Architecture Type | Grouped-Query Attention (GQA-32) + 8-bit Dynamic KV Cache + Two-Tier Speculative Verification |
| License | Proprietary Commercial API (Claude Platform & Multi-Cloud) |
| Input Pricing (per 1M) | $4.00 |
| Output Pricing (per 1M) | $20.00 |