AnthropicEstimated tokenizer

Claude Sonnet 4.5 API price

Anthropic charges $3 per 1M input tokens and $15 per 1M output tokens. Context window 200,000 tokens. A 10k-in / 2k-out request is about $0.0600.

Input$3 / 1M

Output$15 / 1M

Blended$6.00 / 1M

Context200,000

10k + 2k$0.0600

100k + 8k$0.4200

Who uses Claude Sonnet 4.5

Catalog prompts in the same model family, plus coding agents from this provider.