Gemini 3.1 Pro vs Qwen 3.5 397B
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3.1 Pro by Google wins on 12 of 14 benchmarks against Qwen 3.5 397B by Qwen, which leads on 2. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from the AI Value Index.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Gemini 3.1 Pro scores 1501 on Chatbot Arena ELO compared to Qwen 3.5 397B's 1350, while Gemini 3.1 Pro scores 92.6% on MMLU-Pro compared to Qwen 3.5 397B's 81.0%.
Coding: In coding, Gemini 3.1 Pro scores 93.0% on HumanEval+ compared to Qwen 3.5 397B's 88.0%, while Gemini 3.1 Pro scores 80.6% on SWE-bench Verified compared to Qwen 3.5 397B's 76.4%, while Gemini 3.1 Pro scores 75.0% on LiveCodeBench compared to Qwen 3.5 397B's 54.0%.
Math: In math, Gemini 3.1 Pro scores 93.0% on MATH compared to Qwen 3.5 397B's 87.0%, while Gemini 3.1 Pro scores 98.0% on GSM8K compared to Qwen 3.5 397B's 95.0%.
Reasoning: In reasoning, Gemini 3.1 Pro scores 94.1% on GPQA Diamond compared to Qwen 3.5 397B's 62.0%, while Gemini 3.1 Pro scores 77.1% on ARC-AGI compared to Qwen 3.5 397B's 45.0%.
Context: In context, Gemini 3.1 Pro scores 1.0M on Context Length compared to Qwen 3.5 397B's 131K.
Pricing Comparison
Gemini 3.1 Pro costs $2.0/1M input tokens and $12.0/1M output tokens, while Qwen 3.5 397B costs $0.60/1M input and $3.6/1M output. Qwen 3.5 397B is the more affordable option for API usage.
Speed Comparison
Gemini 3.1 Pro generates output at 65 tok/s compared to Qwen 3.5 397B's 45 tok/s, and the time to first token is 420 ms for Gemini 3.1 Pro versus 600 ms for Qwen 3.5 397B. Gemini 3.1 Pro delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math and speed, Gemini 3.1 Pro has the edge. For those who value affordability, Qwen 3.5 397B is the stronger choice.
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Gemini 3.1 Pro vs Qwen 3.5 397B — FAQ
Which is better, Gemini 3.1 Pro or Qwen 3.5 397B?
Gemini 3.1 Pro wins on more benchmarks overall (12 vs 2). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 3.1 Pro compare to Qwen 3.5 397B for coding?
Gemini 3.1 Pro is better for coding, scoring 80.6% on SWE-bench Verified compared to 76.4%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Gemini 3.1 Pro cheaper than Qwen 3.5 397B?
Yes, Qwen 3.5 397B is cheaper. Gemini 3.1 Pro costs $2.0/1M input and $12.0/1M output tokens. Qwen 3.5 397B costs $0.60/1M input and $3.6/1M output tokens.
Which is faster, Gemini 3.1 Pro or Qwen 3.5 397B?
Gemini 3.1 Pro is faster, generating output at 65 tok/s compared to 45 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 3.1 Pro vs Qwen 3.5 397B comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, Time to First Token, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.