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Gemini 2.5 Pro vs Grok 3
Side-by-side intelligence, speed, price, benchmarks, strengths and weaknesses for Gemini 2.5 Pro and Grok 3 — refreshed monthly.
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Spec
Gemini 2.5 Pro
Grok 3
Intelligence index↑ better
Winner78
74
Speed↑ better
Winner110 tok/s
75 tok/s
Time to first token↓ better
0.7 s
Winner0.6 s
Context window↑ better
Winner2M
1M
Max output↑ better
Winner66k
16k
Input price↓ better
Winner$1.25 / 1M tokens
$3.00 / 1M tokens
Output price↓ better
Winner$5.00 / 1M tokens
$15.00 / 1M tokens
Blended price↓ better
Winner$2.19 / 1M tokens
$6.00 / 1M tokens
License
Proprietary
Proprietary
Input modalities
text, image, audio, video
text, image
Output modalities
text
text
Benchmark showdown
MMLU
Gemini 2.5 Pro
89.5
Grok 3
88.0
MMLU Pro
Gemini 2.5 Pro
78.5
Grok 3
76.0
GPQA
Gemini 2.5 Pro
66.0
Grok 3
62.0
MATH
Gemini 2.5 Pro
91.0
Grok 3
88.5
HumanEval
Gemini 2.5 Pro
91.5
Grok 3
90.0
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
Grok 3
Strengths
- Live X data
- 1M context
- Strong reasoning mode
Weaknesses
- Smaller ecosystem
- Less tool-use tooling
Best for
- Real-time research
- Social-aware apps
Quick verdict
- Pick Gemini 2.5 Pro if you want it smarter, faster, cheaper and longer context.
Auto-generated from the spec sheet. Always validate on your own evals.
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