Anthropic

Use Claude Opus 4, Claude Sonnet 4, and other Anthropic models.

Setup

Get an API key at console.anthropic.com/settings/keys
In Pawz → Settings → Providers → Add Provider → Anthropic
Paste your API key

Configuration

Setting	Default
Base URL	`https://api.anthropic.com/v1`
API key	Required
Default model	—

Models

Model	Best for
`claude-opus-4-20250514`	Most capable, complex tasks
`claude-sonnet-4-20250514`	Great balance of speed and quality
`claude-haiku-4-20250506`	Fastest, cheapest
`claude-3-haiku-20240307`	Legacy fast model

Prefix routing

Model names starting with claude* or anthropic* auto-route to Anthropic.

Notes

Anthropic uses a custom API format (not OpenAI-compatible). Pawz has a dedicated AnthropicProvider implementation that handles the differences automatically, including:

Message format conversion
Tool use format
Streaming delta handling
Extended thinking support

​Anthropic

​Setup

​Configuration

​Models

​Prefix routing

​Notes