Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 20.0. For speed, Gemini 3.1 Pro Preview wins at 113 tok/s vs 0 tok/s.
| Metric | GPT-4.5 (Preview) | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 20.0 | 57.2 |
| Coding Score | N/A | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 0 tok/s | 113 tok/s |
| Latency (TTFT) | 0.00s | 23.84s |
| Input Price / 1M tokens | Free | $2.00 |
| Output Price / 1M tokens | Free | $12 |
| Context Window | N/A | 1.0M |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Audio + File + Image + Text + Video |
Gemini 3.1 Pro Preview outperforms GPT-4.5 (Preview) on the intelligence index with a score of 57.2 compared to 20.0.
Gemini 3.1 Pro Preview generates output significantly faster at 113 tok/s compared to GPT-4.5 (Preview)'s 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for GPT-4.5 (Preview) vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
GPT-4.5 (Preview) is completely free, while Gemini 3.1 Pro Preview costs $2.00/1M input tokens and $12/1M output tokens.
Choose Gemini 3.1 Pro Preview when you need higher intelligence (57.2), faster output (113 tok/s).
Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to GPT-4.5 (Preview)'s 0 tok/s.
No, GPT-4.5 (Preview) does not support image input. However, Gemini 3.1 Pro Preview does support images.
It depends on your priorities. Gemini 3.1 Pro Preview scores higher on intelligence (57.2), but GPT-4.5 (Preview) may be better for specific use cases like cost savings or speed-critical applications.
Data last synced: March 26, 2026
| Output Modalities | Text | Text |
| Free Tier | Yes | No |