Gemini 3 Pro vs GPT-5
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3 Pro by Google and GPT-5 by OpenAI are evenly matched across 18 benchmarks. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Gemini 3 Pro scores 1492 on Chatbot Arena ELO compared to GPT-5's 1390, while Gemini 3 Pro scores 89.8% on MMLU-Pro compared to GPT-5's 86.0%, while Gemini 3 Pro scores 91.0% on IFEval compared to GPT-5's 90.0%.
Coding: In coding, GPT-5 scores 92.0% on HumanEval+ compared to Gemini 3 Pro's 91.0%, while GPT-5 scores 74.9% on SWE-bench Verified compared to Gemini 3 Pro's 65.0%, while GPT-5 scores 78.0% on LiveCodeBench compared to Gemini 3 Pro's 72.0%, while Gemini 3 Pro scores 1259 on Design Arena ELO compared to GPT-5's 1172, while Gemini 3 Pro scores 1265 on Website Arena ELO compared to GPT-5's 1194.
Math: In math, GPT-5 scores 94.6% on MATH compared to Gemini 3 Pro's 92.0%, while GPT-5 scores 98.0% on GSM8K compared to Gemini 3 Pro's 97.5%, while Gemini 3 Pro scores 95.0% on AIME 2025 compared to GPT-5's 94.6%.
Reasoning: In reasoning, Gemini 3 Pro scores 91.9% on GPQA Diamond compared to GPT-5's 86.0%, while Gemini 3 Pro scores 54.0% on ARC-AGI compared to GPT-5's 50.0%.
Context: In context, Gemini 3 Pro scores 1.0M on Context Length compared to GPT-5's 400K.
Pricing Comparison
Gemini 3 Pro costs $2.0/1M input tokens and $12.0/1M output tokens, while GPT-5 costs $1.3/1M input and $10.0/1M output. GPT-5 is the more affordable option for API usage.
Speed Comparison
Gemini 3 Pro generates output at 60 tok/s compared to GPT-5's 100 tok/s, and the time to first token is 450 ms for Gemini 3 Pro versus 320 ms for GPT-5. GPT-5 delivers faster throughput.
Verdict
For developers prioritizing general intelligence, Gemini 3 Pro has the edge. For those who value coding and math and affordability and speed, GPT-5 is the stronger choice.
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Gemini 3 Pro vs GPT-5 — FAQ
Which is better, Gemini 3 Pro or GPT-5?
Gemini 3 Pro and GPT-5 are evenly matched across benchmarks. The best choice depends on your specific priorities such as coding ability, speed, or pricing.
How does Gemini 3 Pro compare to GPT-5 for coding?
GPT-5 is better for coding, scoring 74.9% on SWE-bench Verified compared to 65.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Gemini 3 Pro cheaper than GPT-5?
Yes, GPT-5 is cheaper. Gemini 3 Pro costs $2.0/1M input and $12.0/1M output tokens. GPT-5 costs $1.3/1M input and $10.0/1M output tokens.
Which is faster, Gemini 3 Pro or GPT-5?
GPT-5 is faster, generating output at 100 tok/s compared to 60 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 3 Pro vs GPT-5 comparison cover?
This comparison covers 18 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.