Google: Gemini 3.5 Flash-Lite vs OpenAI: GPT-5.1
Google: Gemini 3.5 Flash-Lite 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-Lite | OpenAI: GPT-5.1 |
|---|---|---|
| Intelligence Index | 36.5 | 36.9✓ |
| Coding Index | 49.3 | 49.4✓ |
| GPQA Diamond | 84% | 87%✓ |
| Design Arena Elo | — | 1241✓ |
| Speed (tokens/sec) | 341✓ | 38 |
| Latency | 880ms✓ | 1.0s |
| Input price /M | $0.300✓ | $1.25 |
| Output price /M | $2.50✓ | $10.00 |
| Context window | 1.0M✓ | 400K |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |