Gemini 2.5 Pro vs o3 Pro
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o3 Pro by OpenAI wins on 8 of 14 benchmarks against Gemini 2.5 Pro by Google, which leads on 6. 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 2.5 Pro scores 1465 on Chatbot Arena ELO compared to o3 Pro's 1410, while o3 Pro scores 86.0% on MMLU-Pro compared to Gemini 2.5 Pro's 84.0%.
Coding: In coding, o3 Pro scores 92.0% on HumanEval+ compared to Gemini 2.5 Pro's 89.0%, while o3 Pro scores 70.0% on SWE-bench Verified compared to Gemini 2.5 Pro's 63.8%, while o3 Pro scores 75.0% on LiveCodeBench compared to Gemini 2.5 Pro's 58.0%.
Math: In math, o3 Pro scores 97.0% on MATH compared to Gemini 2.5 Pro's 88.0%, while o3 Pro scores 99.0% on GSM8K compared to Gemini 2.5 Pro's 95.5%.
Reasoning: In reasoning, o3 Pro scores 85.0% on GPQA Diamond compared to Gemini 2.5 Pro's 84.0%, while o3 Pro scores 70.0% 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 o3 Pro's 200K.
Pricing Comparison
Gemini 2.5 Pro costs $1.3/1M input tokens and $10.0/1M output tokens, while o3 Pro costs $20.0/1M input and $80.0/1M 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 o3 Pro's 25 tok/s, and the time to first token is 500 ms for Gemini 2.5 Pro versus 1200 ms for o3 Pro. Gemini 2.5 Pro delivers faster throughput.
Verdict
For developers prioritizing general intelligence and affordability and speed, Gemini 2.5 Pro has the edge. For those who value coding and math, o3 Pro is the stronger choice.
View Individual Model Pages
Gemini 2.5 Pro vs o3 Pro — FAQ
Which is better, Gemini 2.5 Pro or o3 Pro?
o3 Pro wins on more benchmarks overall (8 vs 6). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 2.5 Pro compare to o3 Pro for coding?
o3 Pro is better for coding, scoring 70.0% 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 o3 Pro?
Yes, Gemini 2.5 Pro is cheaper. Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output tokens. o3 Pro costs $20.0/1M input and $80.0/1M output tokens.
Which is faster, Gemini 2.5 Pro or o3 Pro?
Gemini 2.5 Pro is faster, generating output at 55 tok/s compared to 25 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Gemini 2.5 Pro vs o3 Pro comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.