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Gemini 2.5 Pro vs GPT-4o
Side-by-side intelligence, speed, price, benchmarks, strengths and weaknesses for Gemini 2.5 Pro and GPT-4o — refreshed monthly.
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Spec
Gemini 2.5 Pro
GPT-4o
Intelligence index↑ better
Winner78
72
Speed↑ better
110 tok/s
110 tok/s
Time to first token↓ better
0.7 s
Winner0.4 s
Context window↑ better
Winner2M
128k
Max output↑ better
Winner66k
16k
Input price↓ better
Winner$1.25 / 1M tokens
$2.50 / 1M tokens
Output price↓ better
Winner$5.00 / 1M tokens
$10.00 / 1M tokens
Blended price↓ better
Winner$2.19 / 1M tokens
$4.38 / 1M tokens
License
Proprietary
Proprietary
Input modalities
text, image, audio, video
text, image, audio
Output modalities
text
text, audio
Benchmark showdown
MMLU
Gemini 2.5 Pro
89.5
GPT-4o
88.7
MMLU Pro
Gemini 2.5 Pro
78.5
GPT-4o
73.3
GPQA
Gemini 2.5 Pro
66.0
GPT-4o
53.1
MATH
Gemini 2.5 Pro
91.0
GPT-4o
76.6
HumanEval
Gemini 2.5 Pro
91.5
GPT-4o
90.2
Strengths, weaknesses and best-for
Gemini 2.5 Pro
Strengths
- 2M context
- Native video understanding
- Strong on math
Weaknesses
- Output ceiling lower than competitors
Best for
- Whole-codebase analysis
- Long-doc workflows
- Video QA
GPT-4o
Strengths
- Strong multimodal
- Voice-native
- Mature ecosystem
Weaknesses
- Weaker than GPT-5.5 on reasoning
- Smaller context vs newer models
Best for
- General-purpose chat
- Voice apps
- Vision tasks
Quick verdict
- Pick Gemini 2.5 Pro if you want it smarter, cheaper and longer context.
Auto-generated from the spec sheet. Always validate on your own evals.
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