Neura Intelligence Index
Category Comparison
Benchmark-by-Benchmark
reasoning
| Benchmark | Claude Opus 4.5 | GPT-5 Codex |
|---|---|---|
| GPQA Diamond | 87 | — |
| ARC-AGI v2 | 37.6 | — |
coding
| Benchmark | Claude Opus 4.5 | GPT-5 Codex |
|---|---|---|
| SWE-bench Verified | 80.9 | 74.5 |
general
| Benchmark | Claude Opus 4.5 | GPT-5 Codex |
|---|---|---|
| MMMLU | 90.8 | — |
Category Winners
coding
82.5
reasoning
61.5
general
78.0
agent
54.0