OpenAIGPT-5.4 mini
OpenAI's strongest small model for coding, computer use, and sub-agents, tuned for high-volume production at a fraction of GPT-5.4 pricing.
Source: OpenAI models, OpenAI pricing
Pricing
Every billing leg from the live catalog, in USD per 1M tokens.
| Billing leg | Rate | Batch |
|---|---|---|
| Input | $0.75 / M | $0.375 / M |
| Output | $4.5 / M | $2.25 / M |
| Cache read | $0.075 / M | $0.0375 / M |
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.
Compare providers
The same model, priced across every platform that serves it. Lowest combined in/out rate is flagged.
| Platform | Input / M | Output / M | Cache read / M | Batch | Access |
|---|---|---|---|---|---|
OpenAILowest | $0.75 | $4.5 | $0.075 | ✓ | First-party API |
Cursor | $0.75 | $4.5 | $0.075 | — | Direct |
Price history
Has this model gotten cheaper or more expensive?
| Effective | Input / Output | Status |
|---|---|---|
| April 20, 2026 – July 10, 2026 | $0.75 / $4.5 | past |
| July 10, 2026 | $0.75 / $4.5 | current |
More from OpenAI
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SuperPenguin meters every GPT-5.4 mini call your team makes, prices it with this exact rate card, and shows spend by feature, customer, and team.
Rates are generated from SuperPenguin's live pricing catalog.