Claude Opus 5 vs GPT-5.5
Claude Opus 5 and GPT-5.5 charge practically the same to read a 26.2K-token pull request ($0.131). Above 272K tokens long-context rates apply, and Claude Opus 5 becomes the cheaper one. Both sit in the frontier price tier, so the choice between them is about review quality more than budget.
Side by side
| Figure | Claude Opus 5 | GPT-5.5 |
|---|---|---|
| Price tier | Frontier | Frontier |
| Typical review calllist price | $0.1915 (better) | $0.2035 |
| Input / 1M tokens | $5.00 | $5.00 |
| Output / 1M tokens | $25.00 (better) | $30.00 |
| Context window | 1M | 1.1M |
- Above 272K tokens, long-context rates mean Claude Opus 5 is the cheaper of the two.
Not benchmarked yet
Claude Opus 5 and GPT-5.5 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