Claude Sonnet 5.5 vs GPT-6 Luna
Claude Sonnet 5.5 wins all 3 shared jobs.
Score by job
Scores run from 0 to 100 within each job. A gap under 3 points is too close to call. ~ marks an early read from too few benchmarks to rank. How scores work
At a glance
| Detail | Claude Sonnet 5.5 | GPT-6 Luna |
|---|---|---|
| Maker | Anthropic | OpenAI |
| Released | Sep 28, 2026 | Sep 22, 2026 |
| Weights | Closed | Closed |
| Price per 1M tokens | not listed | not listed |
| Overall rank | Not ranked yet | #30 |