| Category | Claude Opus 5.5 | GPT-6 Astra | Reading |
|---|---|---|---|
| Agentic | 89 Supported · #1/123 | 70.7 Supported · #7/123 | Claude Opus 5.5 leads |
| Coding | 83.3 Supported · #2/146 | 76.1 Supported · #4/146 | Claude Opus 5.5 leads |
| Reasoning | 86.1 #3/28 | 93.4 #1/28 | Directional only |
| Multimodal | 92.2 #3/54 | 87.3 Unranked · 3 rankable rows | Not comparable |
| Knowledge | 90 Supported · #1/177 | 86.2 Supported · #3/177 | Claude Opus 5.5 leads |
| Multilingual | — | — | Not comparable |
| Instruction following | — | — | Not comparable |
| Math | — | 85.5 Unranked · 1 rankable row | Not comparable |