# Claude Sonnet 5.5

Claude Sonnet 5.5 is a step-change improvement over Sonnet 5 for well-scoped everyday work like building features, fixing bugs, and creating polished documents, slides, and spreadsheets. It also writes more clearly than Sonnet 5.

- **Model ID:** `anthropic/claude-sonnet-5.5`
- **Type:** chat
- **Providers:** anthropic, vertexAnthropic, bedrock, claudeaws
- **Context window:** 1,000,000
- **Maximum output tokens:** 128,000
- **Pricing:** $2/1M input tokens, $10/1M output tokens
- **Canonical page:** https://vercel.com/ai-gateway/models/claude-sonnet-5.5

## Supported parameters

Detailed capability metadata has not been reported for this model.

## Example

```ts
import { streamText } from 'ai'

const result = streamText({
  model: 'anthropic/claude-sonnet-5.5',
  prompt: 'Why is the sky blue?'
})
```

## Links

- [Model page](https://vercel.com/ai-gateway/models/claude-sonnet-5.5)
- [AI Gateway documentation](https://vercel.com/docs/ai-gateway)
- [Provider model documentation](https://platform.claude.com/docs/en/about-claude/models/overview)
- [Provider pricing](https://www.anthropic.com/pricing#anthropic-api)