GPT-5.3 Codex vs GPT-6.1 Sol
GPT-5.3 Codex reads a 26.2K-token pull request for $0.0459, 13% less than GPT-6.1 Sol ($0.0524). Both sit in the mid-range price tier, so the choice between them is about review quality more than budget.
Side by side
| Figure | GPT-5.3 Codex | GPT-6.1 Sol |
|---|---|---|
| Price tier | Mid-range | Mid-range |
| Bugs caughtshare of known bugs | – | 89% |
| False alarmsper clean PR | – | 0.9 |
| Cost per reviewmeasured | – | $0.0401 |
| Cost per bug caught | – | $0.0514 |
| Exact linecatches on the expected lines | – | 95% |
| Review timemean | – | 28s |
| Typical review calllist price | $0.0797 | $0.0766 (better) |
| Input / 1M tokens | $1.75 (better) | $2.00 |
| Output / 1M tokens | $14.00 | $10.00 (better) |
| Context window | 400K | 1.1M |
Not benchmarked yet
GPT-5.3 Codex 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