Claude Sonnet 5.5
·
A Claude model for scoped coding tasks and everyday documents, slides and spreadsheets. Anthropic presents it as a faster complement to Opus for iterative work.
- Reviewed tasks
- Coding, Knowledge work, Writing
- Reviewed modalities
- Text, Images
- Deployment paths
- Hosted API
- Focus / inputs
- Text and images → text
- Availability / restrictions
- Claude Platform and supported cloud platforms. Users migrating with thinking disabled need the new between_tools setting.
- 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 Sonnet 5.5 |
|---|---|
| API identifier | claude-sonnet-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 | 2 USD/MTok (Standard) |
| Base output price | 10 USD/MTok (Standard) |
| Cache-read price | 0.1 USD/MTok (Standard) |
| Price conditions | Standard: input 2 USD/MTok, output 10 USD/MTok, cache read 0.1 USD/MTok, cache write 2.5 USD/MTok (5 minutes), cache write 4 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.