NVIDIA: Nemotron 3 Ultra wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | NVIDIA: Nemotron 3 Ultra | OpenAI: GPT-5.2-Codex |
|---|---|---|
| Intelligence Index | 47.7 | 49.0✓ |
| Coding Index | 37.6 | 43.0✓ |
| GPQA Diamond | 87% | 90%✓ |
| Design Arena Elo | 1223✓ | 1188 |
| Speed (tokens/sec) | 61 | 87✓ |
| Latency | 928ms✓ | 2.5s |
| Input price /M | $0.500✓ | $1.75 |
| Output price /M | $2.50✓ | $14.00 |
| Context window | 1M✓ | 400K |
| Capabilities | ReasoningToolsJSON | ReasoningToolsJSONVision |