claude-sonnet-4-5

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Integration guide

Overview

claude-sonnet-4-5 is available on MAX API through the OpenAI-compatible API.

Pricing

Official list prices in USD. Token prices are per 1M tokens.

Input ≤ 200,000 tokens

Input: $3
Output: $15
Cache read: $0.3
Cache write: $3.75

Input > 199,999 tokens

Input: $6
Output: $22.5
Cache read: $0.6
Cache write: $7.5

Tier	Input	Output	Cache read	Cache write
Input ≤ 200,000 tokens	$3	$15	$0.3	$3.75
Input > 199,999 tokens	$6	$22.5	$0.6	$7.5

This model uses tiered pricing: the tier is chosen by the total input length of each request.

Cache read applies to prompt tokens served from the prompt cache; cache write applies to tokens written into it.

Example request

curl https://<your-endpoint>/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

https://<your-endpoint> is a placeholder. Your endpoint is shown in the console after you sign in.