Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 25.9. o3-mini is 1.8x cheaper at $1.10/1M tokens vs $2.00/1M.
| Metric | o3-mini | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 25.9 | 57.2 |
| Coding Score | 17.9 | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 139 tok/s | 113 tok/s |
| Latency (TTFT) | 7.40s | 23.84s |
| Input Price / 1M tokens | $1.10 | $2.00 |
| Output Price / 1M tokens | $4.40 | $12 |
| Context Window | N/A | 1.0M |
Gemini 3.1 Pro Preview outperforms o3-mini on the intelligence index with a score of 57.2 compared to 25.9. For coding tasks, Gemini 3.1 Pro Preview has the edge with a coding score of 55.5 vs 17.9.
o3-mini generates output significantly faster at 139 tok/s compared to Gemini 3.1 Pro Preview's 113 tok/s, making it 1.2x faster for streaming responses. Time to first token is 7.40s for o3-mini vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
o3-mini is more affordable at $1.10/1M input tokens ($4.40/1M output), while Gemini 3.1 Pro Preview costs $2.00/1M input ($12/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, o3-mini would cost approximately $6.60/month vs $12.00/month for Gemini 3.1 Pro Preview in input costs alone.
Choose o3-mini when you need lower cost. Choose Gemini 3.1 Pro Preview when you need higher intelligence (57.2), stronger coding performance (55.5).
Gemini 3.1 Pro Preview scores higher on coding benchmarks (55.5 vs 17.9), making it the better choice for programming tasks.
o3-mini is cheaper at $1.10/1M input tokens vs $2.00/1M for Gemini 3.1 Pro Preview.
o3-mini is faster, producing output at 139 tok/s compared to Gemini 3.1 Pro Preview's 113 tok/s.
No, o3-mini does not support image input. However, Gemini 3.1 Pro Preview does support images.
Data last synced: March 26, 2026
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Audio + File + Image + Text + Video |
| Output Modalities | Text | Text |
| Free Tier | No | No |
It depends on your priorities. Gemini 3.1 Pro Preview scores higher on intelligence (57.2), but o3-mini may be better for specific use cases like budget-conscious projects or speed-critical applications.