GPT-5.4 Pro vs GPT-5.5 Pro
GPT-5.4 Pro and GPT-5.5 Pro charge practically the same to read a 26.2K-token pull request ($0.7862). Both are GPT Pro models, so the difference is one version of the same line against another.
Side by side
| Figure | GPT-5.4 Pro | GPT-5.5 Pro |
|---|---|---|
| Price tier | Frontier | Frontier |
| Typical review calllist price | $1.2213 | $1.2213 |
| Input / 1M tokens | $30.00 | $30.00 |
| Output / 1M tokens | $180.00 | $180.00 |
| Context window | 1.1M | 1.1M |
Not benchmarked yet
GPT-5.4 Pro and GPT-5.5 Pro aren'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