OpenAIOpenAI o4-mini
A fast, cost-efficient reasoning model on a 200K-token context window. Succeeded by GPT-5 mini.
Source: OpenAI models, OpenAI pricing
Pricing
Every billing leg from the live catalog, in USD per 1M tokens.
| Billing leg | Rate | Batch |
|---|---|---|
| Input | $1.1 / M | $0.55 / M |
| Output | $4.4 / M | $2.2 / M |
| Cache read | $0.275 / 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 | $1.1 | $4.4 | $0.275 | ✓ | First-party API |
Price history
Has this model gotten cheaper or more expensive?
| Effective | Input / Output | Status |
|---|---|---|
| April 20, 2026 – July 10, 2026 | $1.1 / $4.4 | past |
| July 10, 2026 | $1.1 / $4.4 | current |
More from OpenAI
Other models from the same provider.
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Rates are generated from SuperPenguin's live pricing catalog.