Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 45.0. Qwen3.5 397B A17B (Reasoning) is 3.3x cheaper at $0.60/1M tokens vs $2.00/1M. For speed, Gemini 3.1 Pro Preview wins at 113 tok/s vs 53 tok/s.
| Metric | Gemini 3.1 Pro Preview | Qwen3.5 397B A17B (Reasoning) |
|---|---|---|
| Intelligence Score | 57.2 | 45.0 |
| Coding Score | 55.5 | 41.3 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 113 tok/s | 53 tok/s |
| Latency (TTFT) | 23.84s | 1.46s |
| Input Price / 1M tokens | $2.00 | $0.60 |
| Output Price / 1M tokens | $12 | $3.60 |
| Context Window | 1.0M |
Gemini 3.1 Pro Preview outperforms Qwen3.5 397B A17B (Reasoning) on the intelligence index with a score of 57.2 compared to 45.0. For coding tasks, Gemini 3.1 Pro Preview has the edge with a coding score of 55.5 vs 41.3.
Gemini 3.1 Pro Preview generates output significantly faster at 113 tok/s compared to Qwen3.5 397B A17B (Reasoning)'s 53 tok/s, making it 2.1x faster for streaming responses. Time to first token is 1.46s for Qwen3.5 397B A17B (Reasoning) vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
Qwen3.5 397B A17B (Reasoning) is more affordable at $0.60/1M input tokens ($3.60/1M output), while Gemini 3.1 Pro Preview costs $2.00/1M input ($12/1M output). That makes Gemini 3.1 Pro Preview 3.3x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, Gemini 3.1 Pro Preview would cost approximately $12.00/month vs $3.60/month for Qwen3.5 397B A17B (Reasoning) in input costs alone.
Choose Gemini 3.1 Pro Preview when you need higher intelligence (57.2), stronger coding performance (55.5), faster output (113 tok/s). Choose Qwen3.5 397B A17B (Reasoning) when you need lower cost.
Gemini 3.1 Pro Preview scores higher on coding benchmarks (55.5 vs 41.3), making it the better choice for programming tasks.
Qwen3.5 397B A17B (Reasoning) is cheaper at $0.60/1M input tokens vs $2.00/1M for Gemini 3.1 Pro Preview.
Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to Qwen3.5 397B A17B (Reasoning)'s 53 tok/s.
Yes, Gemini 3.1 Pro Preview supports image input. Qwen3.5 397B A17B (Reasoning) does not support image input.
Data last synced: March 26, 2026
| N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Audio + File + Image + Text + Video | Text |
| 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 Qwen3.5 397B A17B (Reasoning) may be better for specific use cases like budget-conscious projects or speed-critical applications.