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Anthropic: Claude Sonnet 4.5 API pricing
Last updated
- Input / 1M tokens
- $3.00
- Output / 1M tokens
- $15.00
- Blended / 1M
- $6.00
- 3:1 input:output
- Context window
- 1M
- tokens
- Arena Elo
- 1200
Context window
How much text fits in a single request.
1,000,000 tokens, roughly 750K words or 1,500 pages of English text.
Estimate assumes ~0.75 words per token and 500 words per page. Input and output share this limit.
Price history
USD per 1M tokens at each recorded price change.
| Date | Input / 1M | Output / 1M | Blended / 1M | Change |
|---|---|---|---|---|
| $3.00 | $15.00 | $6.00 | Launch |
Changelog
Notable updates to Anthropic: Claude Sonnet 4.5.
Anthropic Claude Sonnet 4.5 is now tracked with input pricing at 3 USD per 1M tokens, output at 15 USD per 1M tokens, a 1000000-token context window, and an Elo score of 1200.
Summaries are AI-generated from tracked data changes.