AllocateGemini 3.1 Pro vs Qwen 3.5
On provider list prices, Qwen 3.5 costs $0.60 per million input tokens against $2 for Gemini 3.1 Pro: 3.3x apart. Output is $3.60 against $12 (3.3x). On Allocate both bill at list plus the 7% transaction fee.
Gemini 3.1 Pro
Qwen 3.5Specifications and provider list prices from the Allocate catalog, checked 2026-07-08. Billed price is list plus the 7% transaction fee.
What the numbers say
Take 1,000,000 requests a month at 1,200 input and 350 output tokens each. That workload costs $1,980 a month on Qwen 3.5 and $6,600 on Gemini 3.1 Pro at list: a gap of $4,620, or 3.3x.
Gemini 3.1 Pro reads 1M tokens per request against 256K for Qwen 3.5, 3.8x the window. That decides which one can take whole documents without splitting them.
Choose Gemini 3.1 Pro for
- Judgment-heavy workflows
- Long-context analysis
- Escalation tier above Flash
Choose Qwen 3.5 for
- Multilingual support agents
- Translation-adjacent workflows
- Fine-tuning under Apache 2.0
Common questions
Which is cheaper, Gemini 3.1 Pro or Qwen 3.5?
Qwen 3.5, on this workload shape. At list prices it is $0.60/$3.60 per million tokens in and out against $2/$12 for Gemini 3.1 Pro. Billed on Allocate: $0.64/$3.85 against $2.14/$12.84, list plus 7%.
Which has the bigger context window?
Gemini 3.1 Pro: 1,000,000 tokens (1M) against 262,144 (256K) for Qwen 3.5.
Can I fine-tune Gemini 3.1 Pro or Qwen 3.5?
Qwen 3.5 publishes open weights (Apache 2.0) and can be fine-tuned on your own data. Gemini 3.1 Pro is a closed model served over API; its weights are not available.
Related comparisons
Run the numbers on your workload
Or don’t choose. On Allocate a route name is the contract: point yours at one model today, swap to the other tomorrow, and compare them on your live traffic with per-token metering.