claude-haiku-5-5

AnthropicChat & Reasoning

Fast reasoning for focused tasks, extraction, and coding.

API IDclaude-haiku-5-5
View setup
View usage

Overview

Context
1,000,000 tokens
Max output
128,000 tokens
Input
Text, Image
Output
Text
Providers
Anthropic Foundry Endpoint
Released
Oct 2026
Latest operational check
Healthy
API compatibility
  • OpenAI Chat Completions
  • Anthropic Messages
Recommended for
  • General-purpose reasoning
  • Long-context analysis
  • Production assistants

Keep in mind: Higher token rates apply above 100,000 prompt tokens Use adaptive thinking and omit sampling controls; one-hour cache writes are unsupported

Supported features
  • Function calling: Supported
  • Structured outputs: Not supported
  • Vision: Supported
  • Streaming: Supported
  • Reasoning: Supported
  • Prompt caching: Supported
Supported parameters
reasoning_effortmax_completion_tokensmax_tokensparallel_tool_callsresponse_formatstopstreamtool_choicetoolsuser
View API reference

Make your first request

View full setup 
curl --fail-with-body https://gateway.primexos.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-haiku-5-5","messages":[{"role":"user","content":"Hello from Primex"}],"stream":false}'

Executing this request uses your account’s API credits.

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