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Claude Haiku 5.5

claude-haiku-5-5

Claude Haiku 5.5 is designed for high-volume, latency-sensitive tasks such as classification, extraction, routing, and subagent work. It supports text and image input, text output, a 1,000,000 token context window, and 128,000 max output tokens. Use model ID `claude-haiku-5-5` with the OpenAI-compatible Chat Completions endpoint.

Authentication

authorization string required

All APIs require authentication via Bearer Token.

Get API Key:

Visit API Key Management Page to get your API Key.

Usage:

Add to request header:

Authorization: Bearer YOUR_API_KEY

Parameters

model string required

Model ID to use for the request

Value: claude-haiku-5-5


messages array required

Array of message objects representing the conversation history

role string required

Message role

Options: user, assistant, system, developer

content string | array required

Text string or multimodal array


max_tokens integer

Maximum tokens to generate in the completion

Range: 1 - 128000


stream boolean

Whether to stream response incrementally

Default: false