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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.
| Attribute | Claude Sonnet 5.5claude-sonnet-5.5 | S1s1 |
|---|---|---|
| Pricing | ||
| Input | $2.00 / 1M | $0 / 1M |
| Output | $10.00 / 1M | $0 / 1M |
| Cache Write (5m) | $2.50 / 1M | Not applicable |
| Cache Write (1h) | $4.00 / 1M | Not applicable |
| Cache Read | $0.20 / 1M | Not applicable |
| Web Search | $0 / 1M | $0 / 1M |
| Context | ||
| Max context | 1M | N/A |
| Max output | N/A | N/A |
| Capabilities | ||
| Vision | Yes | No |
| Function Calling | Yes | No |
| JSON Mode | Yes | No |
| Streaming | Yes | No |
| Catalogue | ||
| Provider | Anthropic | Fish Audio |
| Category | chat | voice |
| Charge type | Pay As You Go | Pay As You Go |
| Released | — | 2026-07-29 |
| Description | ||
| Summary | Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor. | Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text. |