Gemini 3.8 Flash vs GPT-5.4 Mini
Gemini 3.8 Flash and GPT-5.4 Mini charge practically the same to read a 26.2K-token pull request ($0.0197). From 2027-01-01, after a scheduled reprice, GPT-5.4 Mini becomes the cheaper one. Both sit in the mid-range price tier, so the choice between them is about review quality more than budget.
Side by side
| Figure | Gemini 3.8 Flash | GPT-5.4 Mini |
|---|---|---|
| Price tier | Mid-range | Mid-range |
| Bugs caughtshare of known bugs | 68% | – |
| False alarmsper clean PR | 1.0 | – |
| Cost per reviewmeasured | $0.0862 | – |
| Cost per bug caught | $0.1166 | – |
| Exact linecatches on the expected lines | 94% | – |
| Review timemean | 427s | – |
| Typical review calllist price | $0.0287 (better) | $0.0305 |
| Input / 1M tokens | $0.75 | $0.75 |
| Output / 1M tokens | $3.75 (better) | $4.50 |
| Context window | 1M | 400K |
- From 2027-01-01, after a scheduled reprice, GPT-5.4 Mini is the cheaper of the two.
Not benchmarked yet
GPT-5.4 Mini isn't benchmarked yet, so this page compares list prices only. Measured bugs caught, false alarms and a bug-by-bug comparison appear here once both have results.
See measured models