GPT-5.5 has the cleanest edge here.
Model vs model
Claude Opus 4.7 vs GPT-5.5
A debate-ready pair page: current winner, counter-case, decisive benchmarks, and the caveat that should travel with the claim.
Claude Opus 4.7 leads this compare set for everyday chatbot.
Visible tradeoffs3 shared benchmarks are still tie-heavy, so the win stays conditional. This compare uses the combined public record, with hybrid receipts labeled separately.
Left caseClaude Opus 4.7 wins 9 visible benchmarks · Coding · Vision understanding
Right caseGPT-5.5 wins 6 visible benchmarks · Coding
Traveling caveat3 shared benchmarks are still tie-heavy, so the win stays conditional. This compare uses the combined public record, with hybrid receipts labeled separately.
Debate surface3 shared benchmarks still read as tie-heavy.
Claude Opus 4.7 case
- Coding
- Vision understanding
GPT-5.5 case
- Coding
What changes the outcome
- Claude Opus 4.7: 22 visible benchmark gaps still leave room for the result to move.
- GPT-5.5: 25 visible benchmark gaps still leave room for the result to move.
Why this result is surprising
- 3 shared benchmarks are still tie-heavy, so the headline winner is narrower than it looks.
- Security is doing a lot of the visible work in the public narrative.
Why this is not a clean win
- 3 shared benchmarks are still tie-heavy, so the win stays conditional. This compare uses the combined public record, with hybrid receipts labeled separately.
- GPT-5.5 remains the nearest counter-case once you change preset, mode, or missing-coverage assumptions.
Decisive benchmarks
bench
Security
bench
Debugging
Claude Opus 4.7 has the cleanest edge here.
bench
Terminal-Bench 2.0
GPT-5.5 has the cleanest edge here.
15 of 40 benchmarks
| Security BB · % Code · Coding | 76%0% | 85.3%88.9% | 88.9% spread |
| Debugging BB · % Code · Coding | 86.2%70% | 77.5%0% | 70% spread |
| Terminal-Bench 2.0 TERMINAL-BENCH · % Code · Coding | 38%43.5% | 82%100% | 56.5% spread |
| BS pushback BB · % Text · Professional reasoning | 75.5%12.5% | 88%50% | 37.5% spread |
| Speed throughput BB · t/s Code · Coding | 116.4 t/s40% | 152.3 t/s60% | 20% spread |
| HiL-Bench SL · % Code · Coding | 27.7%80% | 29.1%100% | 20% spread |
| Code Arena AR · rating Code · Coding | 1,561100% | 1,44781.7% | 18.3% spread |
| WebDev Arena AR · rating Code · Coding | 1,561100% | 1,44781.7% | 18.3% spread |
| Document Arena AR · rating Document · Document understanding | 1,51194.4% | 1,48783.3% | 11.1% spread |
| Intelligence Index AA · index Text · Chat / text | 5298% | 4187.2% | 10.8% spread |
| Speed TTFT BB · ms Code · Coding | 852.00ms80% | 930.00ms70% | 10% spread |
| Time to first token AA · s Text · Chat / text | 20.83s8.8% | 111.36s1.3% | 7.5% spread |
| Vision Arena AR · rating Vision · Vision understanding | 1,299100% | 1,27495% | 5% spread |
| Search Arena AR · rating Search · Search / tool use | 1,23392.6% | 1,23596.3% | 3.7% spread |
| Text Arena AR · rating Text · Chat / text | 1,47899.1% | 1,46197.5% | 1.6% spread |