Gemini 2.0 Flash vs GPT-5.2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 10 of 15 benchmarks against Gemini 2.0 Flash by Google, which leads on 5. 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 2.0 Flash's 1240, while GPT-5.2 scores 83.0% on MMLU-Pro compared to Gemini 2.0 Flash's 66.0%, while GPT-5.2 scores 95.0% on IFEval compared to Gemini 2.0 Flash's 86.6%.
Coding: In coding, GPT-5.2 scores 95.0% on HumanEval+ compared to Gemini 2.0 Flash's 76.0%, while GPT-5.2 scores 80.0% on SWE-bench Verified compared to Gemini 2.0 Flash's 28.0%, while GPT-5.2 scores 80.0% on LiveCodeBench compared to Gemini 2.0 Flash's 32.0%.
Math: In math, GPT-5.2 scores 97.0% on MATH compared to Gemini 2.0 Flash's 68.0%, while GPT-5.2 scores 99.0% on GSM8K compared to Gemini 2.0 Flash's 86.0%.
Reasoning: In reasoning, GPT-5.2 scores 92.4% on GPQA Diamond compared to Gemini 2.0 Flash's 38.0%, while GPT-5.2 scores 54.2% on ARC-AGI compared to Gemini 2.0 Flash's 18.0%.
Context: In context, Gemini 2.0 Flash scores 1.0M on Context Length compared to GPT-5.2's 400K.
Pricing Comparison
Gemini 2.0 Flash costs $0.10/1M input tokens and $0.40/1M output tokens, while GPT-5.2 costs $1.8/1M input and $14.0/1M output. Gemini 2.0 Flash is the more affordable option for API usage.
Speed Comparison
Gemini 2.0 Flash generates output at 220 tok/s compared to GPT-5.2's 90 tok/s, and the time to first token is 85 ms for Gemini 2.0 Flash versus 380 ms for GPT-5.2. Gemini 2.0 Flash delivers faster throughput.
Verdict
For developers prioritizing affordability and speed, Gemini 2.0 Flash has the edge. For those who value coding and general intelligence and math, GPT-5.2 is the stronger choice.
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Gemini 2.0 Flash vs GPT-5.2 — FAQ
Which is better, Gemini 2.0 Flash or GPT-5.2?
GPT-5.2 wins on more benchmarks overall (10 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 2.0 Flash compare to GPT-5.2 for coding?
GPT-5.2 is better for coding, scoring 80.0% on SWE-bench Verified compared to 28.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Gemini 2.0 Flash cheaper than GPT-5.2?
Yes, Gemini 2.0 Flash is cheaper. Gemini 2.0 Flash costs $0.10/1M input and $0.40/1M output tokens. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens.
Which is faster, Gemini 2.0 Flash or GPT-5.2?
Gemini 2.0 Flash is faster, generating output at 220 tok/s compared to 90 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 2.0 Flash 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.