Google: Gemini 3.5 Flash wins on more metrics (8 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Google: Gemini 3.5 Flash | OpenAI: GPT-5.2 |
|---|---|---|
| Intelligence Index | 50.2✓ | 42.2 |
| Coding Index | 70.1✓ | — |
| GPQA Diamond | 92%✓ | 90% |
| Design Arena Elo | 1313✓ | — |
| Speed (tokens/sec) | 136✓ | 57 |
| Latency | 1.4s | 711ms✓ |
| Input price /M | $1.50✓ | $1.75 |
| Output price /M | $9.00✓ | $14.00 |
| Context window | 1.0M✓ | 400K |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |