OpenAIOpenAI o3
A dedicated reasoning model for complex math, science, and coding, with a 200K-token context window. Succeeded by the GPT-5 family.
Source: OpenAI models, OpenAI pricing
Pricing
Every billing leg from the live catalog, in USD per 1M tokens.
| Billing leg | Rate | Batch |
|---|---|---|
| Input | $2 / M | $1 / M |
| Output | $8 / M | $4 / M |
| Cache read | $0.5 / M | n/a |
Cost calculator
Billing-grade math over the rate card above, including the thinking tokens most estimates miss.
Hidden reasoning tokens bill as output. 1.0x = thinking off. Medium-effort reasoning typically lands near 3x; heavy reasoning runs 6x to 8x. Set it to match your workload.
Provider
Where this model runs, and what it charges.
| Platform | Input / M | Output / M | Cache read / M | Batch | Access |
|---|---|---|---|---|---|
OpenAI | $2 | $8 | $0.5 | ✓ | First-party API |
Price history
Has this model gotten cheaper or more expensive?
| Effective | Input / Output | Status |
|---|---|---|
| April 20, 2026 – July 10, 2026 | $2 / $8 | past |
| July 10, 2026 | $2 / $8 | current |
More from OpenAI
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Rates are generated from SuperPenguin's live pricing catalog.