Gemini 2.5 Pro vs Grok 4
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Grok 4 by xAI wins on 8 of 14 benchmarks against Gemini 2.5 Pro by Google, which leads on 4. 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, Gemini 2.5 Pro scores 1465 on Chatbot Arena ELO compared to Grok 4's 1430, while Grok 4 scores 87.0% on MMLU-Pro compared to Gemini 2.5 Pro's 84.0%.
Coding: In coding, Grok 4 scores 90.0% on HumanEval+ compared to Gemini 2.5 Pro's 89.0%, while Grok 4 scores 72.0% on SWE-bench Verified compared to Gemini 2.5 Pro's 63.8%, while Grok 4 scores 65.0% on LiveCodeBench compared to Gemini 2.5 Pro's 58.0%.
Math: In math, Grok 4 scores 91.0% on MATH compared to Gemini 2.5 Pro's 88.0%, while Grok 4 scores 97.0% on GSM8K compared to Gemini 2.5 Pro's 95.5%.
Reasoning: In reasoning, Grok 4 scores 87.0% on GPQA Diamond compared to Gemini 2.5 Pro's 84.0%, while Grok 4 scores 50.0% 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 Grok 4's 256K.
Pricing Comparison
Gemini 2.5 Pro costs $1.3/1M input tokens and $10.0/1M output tokens, while Grok 4 costs $3.0/1M input and $15.0/1M 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 Grok 4's 55 tok/s, and the time to first token is 500 ms for Gemini 2.5 Pro versus 500 ms for Grok 4. Both models offer similar output speed.
Verdict
For developers prioritizing general intelligence and affordability, Gemini 2.5 Pro has the edge. For those who value coding and math, Grok 4 is the stronger choice.
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Gemini 2.5 Pro vs Grok 4 — FAQ
Which is better, Gemini 2.5 Pro or Grok 4?
Grok 4 wins on more benchmarks overall (8 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 2.5 Pro compare to Grok 4 for coding?
Grok 4 is better for coding, scoring 72.0% 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 Grok 4?
Yes, Gemini 2.5 Pro is cheaper. Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output tokens. Grok 4 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, Gemini 2.5 Pro or Grok 4?
Both models generate output at the same speed of 55 tok/s.
What benchmarks does the Gemini 2.5 Pro vs Grok 4 comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, Time to First Token, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.