Claude Sonnet 4.6

by Anthropic

claude-sonnet-4-6

Overview

Claude Sonnet 4.6 is the everyday Claude — frontier quality at a balanced rate, and the default for production coding and reasoning. It pairs strong tool use and instruction-following with low latency, so it fits agents, assistants and high-volume product features alike.

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-sonnet-4-6",
    "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.