Gemini 3.1 Pro Preview vs Qwen3.5 397B A17B
API pricing, context window and capabilities for Gemini 3.1 Pro Preview and Qwen3.5 397B A17B, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersGemini 3.1 Pro Preview wins on coding, on intelligence and on context window. Qwen3.5 397B A17B wins on price.
Price
Qwen3.5 397B A17B
Coding
Gemini 3.1 Pro Preview
Intelligence
Gemini 3.1 Pro Preview
Context window
Gemini 3.1 Pro Preview
Key takeaways
who wins on what, from the published numbersGemini 3.1 Pro Preview wins
- Larger context window (1M vs 262K)
- More serving providers (4 vs 3)
- Supports audio
- Supports prompt caching
- Has web search
Qwen3.5 397B A17B wins
- Cheaper input ($2.00 vs $0.60 /1M)
- Cheaper output ($12.00 vs $3.60 /1M)
Cheaper overall
Qwen3.5 397B A17B
$0.60 + $3.60 /1M
Larger context
Gemini 3.1 Pro Preview
1M
More providers
Gemini 3.1 Pro Preview
4 providers
Pricing & specs
cheapest serving route · per 1M tokens| Gemini 3.1 Pro Preview | Qwen3.5 397B A17B | |
|---|---|---|
| Input $/1M | $2.00 | $0.60 best |
| Output $/1M | $12.00 | $3.60 best |
| Context window | 1M best | 262K |
| Max output | 66K | 66K |
| Serving providers | 4 best | 3 |
| Released | 2026-02-19 | 2026-02-16 |
Benchmarks
Artificial Analysis indices, side by side| Gemini 3.1 Pro Preview | Qwen3.5 397B A17B | |
|---|---|---|
| Intelligence | 46.5 best | 33.7 |
| Coding | 68.8 best | 48.2 |
| GPQA Diamond | 94% best | 89% |
| Output speed | 154 t/s best | 61 t/s |
| Latency (TTFT) | 34.98s | 9.37s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Gemini 3.1 Pro Preview
via Vertex AI
$22
Qwen3.5 397B A17B
via OpenRouter
$6.60
Capabilities
feature support, side by side| Feature | Gemini 3.1 Pro Preview | Qwen3.5 397B A17B |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | ✓ | — |
| Prompt caching | ✓ | — |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Gemini 3.1 Pro Preview or Qwen3.5 397B A17B?
Qwen3.5 397B A17B is cheaper for input ($2.00 vs $0.60 per 1M tokens). Qwen3.5 397B A17B is cheaper for output ($12.00 vs $3.60 per 1M tokens).
What is the context window difference between Gemini 3.1 Pro Preview and Qwen3.5 397B A17B?
Gemini 3.1 Pro Preview has a 1M-token context window and Qwen3.5 397B A17B has 262K tokens, so Gemini 3.1 Pro Preview can take a larger prompt.
How do Gemini 3.1 Pro Preview and Qwen3.5 397B A17B compare on benchmarks?
On the tracked Artificial Analysis indices, Gemini 3.1 Pro Preview leads on coding, and Gemini 3.1 Pro Preview leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
Every weekday
AI moves fast. Here's your debrief.
News, analysis, tools, and more.
For people who build with AI