Anthropic: Claude Opus 5.5anthropic
Bottom Line
Anthropic: Claude Opus 5.5: $4.00/1M input, $20.00/1M output, 1.0M context, CPS grade B. Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...
API Pricing (per 1M tokens)
| Input | $4.00 |
| Output | $20.00 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $8.00 |
Specs & Performance
| Context Length | 1.0M |
| Max Output | 128K |
| Intelligence | 58 |
| Coding | — |
| Math | — |
| Speed | 96 tok/s |
| TTFT | 407.92s |
| CPS Grade | B |
| Input / Output Modalities | text, image, file → text |
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FAQ
How much does the Anthropic: Claude Opus 5.5 API cost?
Anthropic: Claude Opus 5.5 costs $4.00/1M input tokens and $20.00/1M output tokens. Blended cost at a 3:1 ratio is about $8.00/1M tokens.
What is the context window of Anthropic: Claude Opus 5.5?
Anthropic: Claude Opus 5.5 supports a 1.0M token context window with up to 128K output tokens.
Is Anthropic: Claude Opus 5.5 worth it?
Anthropic: Claude Opus 5.5 has a CPS grade of B (score 61), intelligence index 58, coding index —. Use the compare page to benchmark against rivals.