Claude Haiku 4.5

by Anthropic

claude-haiku-4-5

Overview

Claude Haiku 4.5 is the fast, low-cost Claude for high-volume, latency-sensitive work — classification, extraction, routing and short generations at scale. It keeps Claude-grade quality while staying cheap enough to run on every request.

Quick start

Simple code & API

Create an API key, point your SDK's base URL at Kumo, and call this model with the code you already have.

Create API key

curl https://api.kumo.cloud/v1/chat/completions \
  -H "Authorization: Bearer $KUMO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-haiku-4-5",
    "messages": [{ "role": "user", "content": "Hello from Kumo" }]
  }'

OpenAI-compatible — base URL https://api.kumo.cloud/v1. Your KUMO_API_KEY is read from the environment.