Claude Sonnet 5.5 is a model from Anthropic. Its posted API price is $2.00 per 1M input tokens and $10.00 per 1M output tokens, or $4.00 per 1M tokens blending 3 input tokens with 1 output token. Its price has not changed since Sep 29, 2026. It carries 13.5% of Anthropic's API tokens and is one of the 6 models in the Anthropic token price index, $6.37 per 1M tokens today. Of the 30 models in the token index it is the 7th most expensive. At today's H100 rental price of $3.69 per GPU-hour, its break-even throughput is 256 tokens per second per GPU. Prices are collected once a day, for each UTC day.
Models near this price
Claude Sonnet 5 (Anthropic): $4.00 per 1M tokens, $2.00 input and $10.00 output
GPT-6.1 Sol (OpenAI): $4.00 per 1M tokens, $2.00 input and $10.00 output
Gemini 4 Argon (Google): $4.00 per 1M tokens, $2.00 input and $10.00 output
Kimi K3.1 Pro (Moonshot AI): $4.00 per 1M tokens, $2.00 input and $10.00 output
Grok 4.7 (xAI): $3.00 per 1M tokens, $2.00 input and $6.00 output
GLM 5.3 (Z.ai): $2.15 per 1M tokens, $1.40 input and $4.40 output