Claude Opus 5.5
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A Claude model for demanding work across large codebases and long tasks. Its release changes thinking behavior and integration requirements, which developers should check before migrating.
- Reviewed tasks
- Coding, Computer use, Knowledge work, Writing
- Reviewed modalities
- Text, Images
- Deployment paths
- Hosted API
- Focus / inputs
- Coding, computer use and knowledge work
- Availability / restrictions
- Claude Platform as claude-opus-5-5 and supported cloud platforms, including AWS, Google Cloud and Azure. Some specialist work requires verified access.
- Licence category
- Provider terms
- Licence / terms
- Proprietary; provider terms apply.
Variants, limits and list prices
Values are copied from the linked first-party pages as stated, with the date each group was checked. Unknown means the pages checked do not state the value. Prices are list prices, not a quote or a ranking.
| Field | Claude Opus 5.5 |
|---|---|
| API identifier | claude-opus-5-5 |
| Released | |
| Status and retirement | Retirement not before . |
| Lifecycle checked | Checked |
| Context window | 1M tokens |
| Max input | Unknown |
| Max output | 128K tokens; 300K through the Batch API (beta) |
| Rate limits | Unknown |
| Limit notes | Unknown |
| Limits checked | Checked |
| Base input price | 4 USD/MTok (Standard) |
| Base output price | 20 USD/MTok (Standard) |
| Cache-read price | 0.2 USD/MTok (Standard) |
| Price conditions | Standard: input 4 USD/MTok, output 20 USD/MTok, cache read 0.2 USD/MTok, cache write 5 USD/MTok (5 minutes), cache write 8 USD/MTok (1 hour). 50% off input and output with the Batch API. |
| Prices checked | Checked |
| Knowledge cutoff | |
| Cutoff checked | Checked |
Parameters and weights
Unknown: the first-party pages checked publish no parameter count or weights.