OpenAI: GPT-5.4 wins on more metrics (5 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 |
|---|---|---|
| Intelligence Index | 41.3 | 56.8✓ |
| Coding Index | 39.4 | 57.2✓ |
| GPQA Diamond | 89% | 92%✓ |
| Design Arena Elo | 1345✓ | 1303 |
| Speed (tokens/sec) | 89✓ | 50 |
| Latency | 3.4s | 954ms✓ |
| Input price /M | $2.00✓ | $2.50 |
| Output price /M | $12.00✓ | $15.00 |
| Context window | 1.0M | 1.1M✓ |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |