OpenAI
Trending
legacy
o3 API Pricing
OpenAI reasoning model for complex analysis across text, code and images.
200K tokens contextVerified Oct 3, 2026Official vendor source
Legacy model
o3 is retained for historical cost research. For new workloads, review o3-pro pricing and availability.
View o3-pro pricing API cost calculator
What would o3 cost your company?
Enter monthly usage in millions of tokens. Results update instantly.
Rate
Standard
Estimated monthly cost
$36
Estimated annual cost
$432
Free forever · No credit card · Usage and selected rate are saved automatically.
Token pricing
Published USD rates per one million tokens.
| Scenario | Input | Cached input | Output |
|---|---|---|---|
Standard | $2 | $0.5 | $8 |
Capabilities
Text
Image input
Context window: 200K tokens. Availability and rate limits can depend on account tier and region.