Claude Sonnet 5.5
Current Sonnet: best speed-to-intelligence balance for everyday work.
- Image input
- Reasoning
- Coding
- Tool calling
- Structured output
- Extended thinking
- Streaming
Specifications
| Provider | Anthropic |
|---|---|
| API model ID | claude-sonnet-5-5 |
| Released | September 2026 |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| Reasoning model | Yes |
| Price per 1M tokens (input / output) | $2 / $10 |
Specs as published by Anthropic. Prices are standard list prices before caching or batch discounts.
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FAQ
- What is the context window of Claude Sonnet 5.5?
- Claude Sonnet 5.5 accepts up to 1,000,000 tokens of context and can return up to 128,000 output tokens per reply.
- When was Claude Sonnet 5.5 released?
- Anthropic released Claude Sonnet 5.5 in September 2026.
- How do I use Claude Sonnet 5.5?
- Add your Anthropic API key in DapperGPT, pick Claude Sonnet 5.5 in the model picker, and start chatting. You pay Anthropic directly for usage.