API price
Claude Sonnet 4.5 API price
By Anthropic. $3.00 per million input tokens, $15.00 per million output tokens on OpenRouter. Collected November 12, 2026.
- $3.00
- $15.00
- 1,000,000
- —
- September 29, 2025
- August 22, 2026
Last 90 days
Price changes
No price change in this window.
What the numbers say
- Input costs less than 10% of the 443 paid models we track.
Closest in price
- Aion-3.0$3.00 / $6.00
- Aion 3.5$3.00 / $6.00
- Claude Sonnet 4.6$3.00 / $15.00
- Ember-1$3.00 / $15.00
- GPT-3.5 Turbo 16k$3.00 / $4.00
- Sonar Pro$3.00 / $15.00