Claude Sonnet 5 pricing and token costs
Claude Sonnet 5 is a Anthropic model with a 1,000,000-token context window. Rates below are per million tokens, and are the ones in effect today.
In practice
At $2 per million input tokens this undercuts Claude Opus 5 by more than half while offering the same 1,000,000-token window and the same flat, tier-free pricing. That rate was introductory pricing due to rise to $3 input / $15 output on 1 September 2026, but Anthropic made it permanent and cancelled the increase — so $2/$10 is the standard rate to budget against, not a window closing.
Pricing
- Input, per 1M tokens
- $2.00
- Output, per 1M tokens
- $10.00
- Context window
- 1,000,000 tokens
- Tokenizer
- Anthropic tokenizer
Input and output combined.
Estimated from character length, in your browser.
Alternatives
Head to head
Articles that quote these figures
Common questions
- How much does Claude Sonnet 5 cost per million tokens?
- $2.00 per million input tokens and $10.00 per million output tokens.
- What is the context window of Claude Sonnet 5?
- 1,000,000 tokens, covering input and output combined.
- Which tokenizer does Claude Sonnet 5 use?
- Claude Sonnet 5 is tokenized by Anthropic, which publishes no tokenizer that can run in a browser. Counts here are a character-based estimate and are labelled "est".
Figures come from Anthropic’s published list prices and are checked against every article on this site that quotes them at build time. They are still estimates of what a request costs — verify against your own billing before committing to them. See the methodology page for how these numbers are actually calculated.