Google: Gemini 3.5 Flash wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Google: Gemini 3.5 Flash | OpenAI: GPT-5.4 Nano |
|---|---|---|
| Intelligence Index | 43.3 | 44.0✓ |
| Coding Index | 47.1✓ | 43.9 |
| GPQA Diamond | 83%✓ | 82% |
| Design Arena Elo | 1328✓ | — |
| Speed (tokens/sec) | 174✓ | 67 |
| Latency | 1.6s | 551ms✓ |
| Input price /M | $1.50 | $0.200✓ |
| Output price /M | $9.00 | $1.25✓ |
| Context window | 1.0M✓ | 400K |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |