Claude Haiku 4.5

anthropic/claude-haiku-4-5

The fastest model with near-frontier intelligence. Best for low-latency, high-volume workloads.

Specifications

Context Window 200K tokens

Max Output 64K tokens

Latency fastest

Knowledge Cutoff Feb 2025

Training Data Jul 2025

Pricing

Input $1.00 per 1M tokens

Output $5.00 per 1M tokens

Capabilities

text Text generation and understanding

vision Image and visual input processing

tool use Function calling and tool integration

extended thinking Deep reasoning with chain-of-thought

API Identifiers

Model ID anthropic/claude-haiku-4-5

Provider API ID claude-haiku-4-5-20251001

AWS Bedrock anthropic.claude-haiku-4-5-20251001-v1:0

GCP Vertex AI claude-haiku-4-5@20251001

Usage via Multi-Router

curl https://api.multi-router.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "x-mr-router-id: YOUR_ROUTER_ID" \
  -d '{
    "model": "anthropic/claude-haiku-4-5",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'