Anthropic: Claude Opus 5.5
anthropic/claude-opus-5.5
Context: 1,000,000In: $4.00/1MOut: $20.00/1MUpdated 2026-10-04
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...
Intelligence
57.6
Coding
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Agentic
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Metric profile
Trend over time
Design Arena (ELO by category)
| Category | ELO | Win rate | Rank |
|---|---|---|---|
| gamedev | 1479 | 73.7% | #1 |
| 3d | 1476 | 75% | #1 |
| dataviz | 1398 | 67.1% | #1 |
| codecategories | 1396 | 64.9% | #1 |
| uicomponent | 1381 | 63% | #2 |
| website | 1342 | 57.6% | #3 |
| svg | 1335 | 49% | #1 |
| mobileapps | 1328 | 64.3% | #2 |