OpenAI o3 API pricing
As of 5 August 2026, OpenAI o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens, and scores 76.9% on coding benchmarks (best of Aider polyglot and SWE-bench Verified).
Prices updated 5 August 2026
OpenAI o3 price
USD per 1M tokens.
| Provider | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| OpenAI | $2.00 | $8.00 | 200K |
Coding: 76.9%Reasoning: 81.8%Math: 97.8%
Coding via Aider polyglot & SWE-bench Verified; reasoning & math via Epoch AI.
Cheaper alternatives to OpenAI o3
Models with an equal-or-better coding score at a lower output price. StackSpend surfaces swaps like these against your actual usage.
- How much does the OpenAI o3 API cost?
- As of 5 August 2026, OpenAI o3 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens, and scores 76.9% on coding benchmarks (best of Aider polyglot and SWE-bench Verified).
- Is there a cheaper model as good as OpenAI o3 for coding?
- Yes — accounts/fireworks/models/glm-5p2 (Fireworks AI) scores 78.7% on coding at $4.40 per 1M output tokens, below OpenAI o3's $8.00.
Know what you're really spending on OpenAI o3.
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