Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 28.3.
| Metric | Apriel-v1.5-15B-Thinker | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 28.3 | 57.2 |
| Coding Score | 18.7 | 55.5 |
| Math Score | 87.5 | N/A |
| Speed (tok/s) | 141 tok/s | 113 tok/s |
| Latency (TTFT) | 0.20s | 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 Apriel-v1.5-15B-Thinker on the intelligence index with a score of 57.2 compared to 28.3. For coding tasks, Gemini 3.1 Pro Preview has the edge with a coding score of 55.5 vs 18.7.
Apriel-v1.5-15B-Thinker generates output significantly faster at 141 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 0.20s for Apriel-v1.5-15B-Thinker vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
Apriel-v1.5-15B-Thinker 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).
Gemini 3.1 Pro Preview scores higher on coding benchmarks (55.5 vs 18.7), making it the better choice for programming tasks.
Apriel-v1.5-15B-Thinker is faster, producing output at 141 tok/s compared to Gemini 3.1 Pro Preview's 113 tok/s.
No, Apriel-v1.5-15B-Thinker 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 Apriel-v1.5-15B-Thinker 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 |