API price
o3 API price
By OpenAI. $2.00 per million input tokens, $8.00 per million output tokens on OpenRouter. Collected November 12, 2026.
- $2.00
- $8.00
- 200,000
- —
- April 16, 2025
- August 22, 2026
Last 90 days
Price changes
No price change in this window.
What the numbers say
- Input costs less than 16% of the 443 paid models we track.
Closest in price
- Claude Opus 5.5 (batch)$2.00 / $10.00
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- Claude Sonnet 5.5$2.00 / $10.00
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- Nano Banana Pro (Gemini 3 Pro Image Preview)$2.00 / $12.00
- Gemini 3.1 Pro Preview$2.00 / $12.00