Gemini 2.5 Pro vs GPT-5.2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 11 of 15 benchmarks against Gemini 2.5 Pro by Google, which leads on 4. 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, GPT-5.2 scores 1475 on Chatbot Arena ELO compared to Gemini 2.5 Pro's 1465, while Gemini 2.5 Pro scores 84.0% on MMLU-Pro compared to GPT-5.2's 83.0%, while GPT-5.2 scores 95.0% on IFEval compared to Gemini 2.5 Pro's 88.0%.
Coding: In coding, GPT-5.2 scores 95.0% on HumanEval+ compared to Gemini 2.5 Pro's 89.0%, while GPT-5.2 scores 80.0% on SWE-bench Verified compared to Gemini 2.5 Pro's 63.8%, while GPT-5.2 scores 80.0% on LiveCodeBench compared to Gemini 2.5 Pro's 58.0%.
Math: In math, GPT-5.2 scores 97.0% on MATH compared to Gemini 2.5 Pro's 88.0%, while GPT-5.2 scores 99.0% on GSM8K compared to Gemini 2.5 Pro's 95.5%.
Reasoning: In reasoning, GPT-5.2 scores 92.4% on GPQA Diamond compared to Gemini 2.5 Pro's 84.0%, while GPT-5.2 scores 54.2% on ARC-AGI compared to Gemini 2.5 Pro's 48.0%.
Context: In context, Gemini 2.5 Pro scores 1.0M on Context Length compared to GPT-5.2's 400K.
Pricing Comparison
Gemini 2.5 Pro costs $1.3/1M input tokens and $10.0/1M output tokens, while GPT-5.2 costs $1.8/1M input and $14.0/1M output. Gemini 2.5 Pro is the more affordable option for API usage.
Speed Comparison
Gemini 2.5 Pro generates output at 55 tok/s compared to GPT-5.2's 90 tok/s, and the time to first token is 500 ms for Gemini 2.5 Pro versus 380 ms for GPT-5.2. GPT-5.2 delivers faster throughput.
Verdict
For developers prioritizing affordability, Gemini 2.5 Pro has the edge. For those who value coding and general intelligence and math and speed, GPT-5.2 is the stronger choice.
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Gemini 2.5 Pro vs GPT-5.2 — FAQ
Which is better, Gemini 2.5 Pro or GPT-5.2?
GPT-5.2 wins on more benchmarks overall (11 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 2.5 Pro compare to GPT-5.2 for coding?
GPT-5.2 is better for coding, scoring 80.0% on SWE-bench Verified compared to 63.8%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Gemini 2.5 Pro cheaper than GPT-5.2?
Yes, Gemini 2.5 Pro is cheaper. Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output tokens. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens.
Which is faster, Gemini 2.5 Pro or GPT-5.2?
GPT-5.2 is faster, generating output at 90 tok/s compared to 55 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 2.5 Pro vs GPT-5.2 comparison cover?
This comparison covers 15 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.