OpenAI: GPT-5.4 Nano wins on more metrics (6 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Google: Gemini 3.1 Pro Preview | OpenAI: GPT-5.4 Nano |
|---|---|---|
| Intelligence Index | — | 38.2✓ |
| Coding Index | 39.4 | 43.9✓ |
| GPQA Diamond | 89%✓ | 82% |
| Design Arena Elo | 1346✓ | — |
| Speed (tokens/sec) | — | 68✓ |
| Latency | — | 458ms✓ |
| Input price /M | $2.00 | $0.200✓ |
| Output price /M | $12.00 | $1.25✓ |
| Context window | 1.0M✓ | 400K |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |