Gemini 3.1 Pro vs GPT-5.2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 9 of 16 benchmarks against Gemini 3.1 Pro by Google, which leads on 7. 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 GPT-5.2's 1475, while Gemini 3.1 Pro scores 92.6% on MMLU-Pro compared to GPT-5.2's 83.0%, while GPT-5.2 scores 95.0% on IFEval compared to Gemini 3.1 Pro's 92.0%.
Coding: In coding, GPT-5.2 scores 95.0% on HumanEval+ compared to Gemini 3.1 Pro's 93.0%, while Gemini 3.1 Pro scores 80.6% on SWE-bench Verified compared to GPT-5.2's 80.0%, while GPT-5.2 scores 80.0% on LiveCodeBench compared to Gemini 3.1 Pro's 75.0%.
Math: In math, GPT-5.2 scores 97.0% on MATH compared to Gemini 3.1 Pro's 93.0%, while GPT-5.2 scores 99.0% on GSM8K compared to Gemini 3.1 Pro's 98.0%, while GPT-5.2 scores 100.0% on AIME 2025 compared to Gemini 3.1 Pro's 95.0%.
Reasoning: In reasoning, Gemini 3.1 Pro scores 94.1% on GPQA Diamond compared to GPT-5.2's 92.4%, while Gemini 3.1 Pro scores 77.1% on ARC-AGI compared to GPT-5.2's 54.2%.
Context: In context, Gemini 3.1 Pro scores 1.0M on Context Length compared to GPT-5.2's 400K.
Pricing Comparison
Gemini 3.1 Pro costs $2.0/1M input tokens and $12.0/1M output tokens, while GPT-5.2 costs $1.8/1M input and $14.0/1M output. GPT-5.2 is the more affordable option for API usage.
Speed Comparison
Gemini 3.1 Pro generates output at 65 tok/s compared to GPT-5.2's 90 tok/s, and the time to first token is 420 ms for Gemini 3.1 Pro versus 380 ms for GPT-5.2. GPT-5.2 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence, Gemini 3.1 Pro has the edge. For those who value math and affordability and speed, GPT-5.2 is the stronger choice.
View Individual Model Pages
Gemini 3.1 Pro vs GPT-5.2 — FAQ
Which is better, Gemini 3.1 Pro or GPT-5.2?
GPT-5.2 wins on more benchmarks overall (9 vs 7). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 3.1 Pro compare to GPT-5.2 for coding?
Gemini 3.1 Pro is better for coding, scoring 80.6% on SWE-bench Verified compared to 80.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Gemini 3.1 Pro cheaper than GPT-5.2?
Yes, GPT-5.2 is cheaper. Gemini 3.1 Pro costs $2.0/1M input and $12.0/1M output tokens. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens.
Which is faster, Gemini 3.1 Pro or GPT-5.2?
GPT-5.2 is faster, generating output at 90 tok/s compared to 65 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 3.1 Pro vs GPT-5.2 comparison cover?
This comparison covers 16 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.