NVIDIA: Nemotron 3 Ultra wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | NVIDIA: Nemotron 3 Ultra | OpenAI: GPT-5.1 |
|---|---|---|
| Intelligence Index | 47.7 | 47.7 |
| Coding Index | 37.6 | 44.7✓ |
| GPQA Diamond | 87% | 87%✓ |
| Design Arena Elo | 1223 | 1249✓ |
| Speed (tokens/sec) | 74✓ | 61 |
| Latency | 881ms✓ | 1.0s |
| Input price /M | $0.500✓ | $1.25 |
| Output price /M | $2.50✓ | $10.00 |
| Context window | 1M✓ | 400K |
| Capabilities | ReasoningToolsJSON | ReasoningToolsJSONVision |