Claude 3.7 Sonnet - AnyFast

Key capabilities
Quick example
Parameters

Claude 3.7 Sonnet is Anthropic’s latest high-performance chat model, available through AnyFast via an OpenAI-compatible interface. It features enhanced reasoning capabilities with extended thinking support, excelling at complex coding, analysis, and multi-step tasks.

Key capabilities

OpenAI-compatible — Works as a drop-in replacement with the OpenAI SDK
Extended thinking — Supports step-by-step reasoning for complex problems
Long context — Handles large documents and multi-turn conversations
Streaming — Supports real-time token streaming via SSE
Advanced reasoning — Designed for complex, multi-step tasks with improved accuracy

Quick example

curl https://www.anyfast.ai/v1/messages \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-3-7-sonnet",
    "messages": [
      { "role": "user", "content": "Explain quantum entanglement in simple terms." }
    ]
  }'

Parameters

Parameter	Type	Required	Description
`model`	string	Yes	Must be `claude-3-7-sonnet`
`messages`	array	Yes	List of `{ role, content }` objects
`max_tokens`	integer	No	Maximum tokens to generate
`temperature`	float	No	`0`–`2`. Controls randomness. Default: `1`
`stream`	boolean	No	Enable SSE streaming. Default: `false`
`top_p`	float	No	Nucleus sampling threshold. Default: `1`
`stop`	string / array	No	Sequences that stop generation

API Reference

View the interactive API playground for Claude 3.7 Sonnet.

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