Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 24.1. For speed, Gemini 3.1 Pro Preview wins at 113 tok/s vs 0 tok/s.
| Metric | K2 Think V2 | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 24.1 | 57.2 |
| Coding Score | 15.5 | 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 K2 Think V2 on the intelligence index with a score of 57.2 compared to 24.1. For coding tasks, Gemini 3.1 Pro Preview has the edge with a coding score of 55.5 vs 15.5.
Gemini 3.1 Pro Preview generates output significantly faster at 113 tok/s compared to K2 Think V2's 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for K2 Think V2 vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
K2 Think V2 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), stronger coding performance (55.5), faster output (113 tok/s).
Gemini 3.1 Pro Preview scores higher on coding benchmarks (55.5 vs 15.5), making it the better choice for programming tasks.
Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to K2 Think V2's 0 tok/s.
No, K2 Think V2 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 K2 Think V2 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 |