o3
Last verified: April 24, 2026$2.00/1M input · $8.00/1M output · 200K context · OpenAI
frontierresearchmathcomplex-reasoning
When to use o3
The most powerful reasoning model available. For research-grade problems where getting the right answer justifies the high cost. PhD-level math, complex code architecture, scientific analysis.
- State-of-the-art on reasoning benchmarks
- Handles PhD-level problems
- 200K context window
- Deep multi-step reasoning
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Pricing Details
OpenAIReasoning model
Input / 1M tokens
$2
Output / 1M tokens
$8
Context Window
200K
Max Output
100K
Price History
Launched at current price. No price changes recorded.
Frequently Asked Questions
Common questions about o3 pricing and usage