Claude Opus 5.5 vs GPT-6.1 Sol
Claude Opus 5.5 leads on 1 of 1 benchmarks where both are measured. Specs, per-token pricing, and live benchmark scores — refreshed daily from our benchmark database.
Specs & pricing
| Claude Opus 5.5 | GPT-6.1 Sol | |
|---|---|---|
| Company | Anthropic | OpenAI |
| Released | Sep 2026 | Sep 2026 |
| Context window | 1.0M | 1.1M |
| Input /1M tokens | $4 | $2 |
| Output /1M tokens | $20 | $10 |
| Open weights | No | No |
Benchmarks
| Benchmark | Claude Opus 5.5 | GPT-6.1 Sol |
|---|---|---|
| Arena Elo | — | 1314 Elo |
| GPQA | — | 94.4% |
| Speed (tok/s) | 97 tok/s | 55 tok/s |
Scores come from published leaderboards and official model cards (sources listed on the benchmarks page) and refresh daily. Pricing via vendor pages and OpenRouter.