Claude Sonnet 4 vs Gemini 2.5 Pro
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 2.5 Pro by Google wins on 12 of 17 benchmarks against Claude Sonnet 4 by Anthropic, which leads on 4. 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 Claude Sonnet 4's 1365, while Gemini 2.5 Pro scores 84.0% on MMLU-Pro compared to Claude Sonnet 4's 81.0%, while Gemini 2.5 Pro scores 88.0% on IFEval compared to Claude Sonnet 4's 87.0%.
Coding: In coding, Gemini 2.5 Pro scores 89.0% on HumanEval+ compared to Claude Sonnet 4's 88.0%, while Claude Sonnet 4 scores 72.7% on SWE-bench Verified compared to Gemini 2.5 Pro's 63.8%, while both score 58.0% on LiveCodeBench, while Claude Sonnet 4 scores 37.6 on AA Coding Index compared to Gemini 2.5 Pro's 33.3.
Math: In math, Gemini 2.5 Pro scores 88.0% on MATH compared to Claude Sonnet 4's 85.0%, while Gemini 2.5 Pro scores 95.5% on GSM8K compared to Claude Sonnet 4's 94.5%.
Reasoning: In reasoning, Gemini 2.5 Pro scores 84.0% on GPQA Diamond compared to Claude Sonnet 4's 75.4%, while Gemini 2.5 Pro scores 48.0% on ARC-AGI compared to Claude Sonnet 4's 42.0%.
Context: In context, Gemini 2.5 Pro scores 1.0M on Context Length compared to Claude Sonnet 4's 1.0M.
Pricing Comparison
Claude Sonnet 4 costs $3.0/1M input tokens and $15.0/1M output tokens, while Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output. Gemini 2.5 Pro is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4 generates output at 75 tok/s compared to Gemini 2.5 Pro's 55 tok/s, and the time to first token is 400 ms for Claude Sonnet 4 versus 500 ms for Gemini 2.5 Pro. Claude Sonnet 4 delivers faster throughput.
Verdict
For developers prioritizing coding and speed, Claude Sonnet 4 has the edge. For those who value general intelligence and math and affordability, Gemini 2.5 Pro is the stronger choice.
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Claude Sonnet 4 vs Gemini 2.5 Pro — FAQ
Which is better, Claude Sonnet 4 or Gemini 2.5 Pro?
Gemini 2.5 Pro wins on more benchmarks overall (12 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4 compare to Gemini 2.5 Pro for coding?
Claude Sonnet 4 is better for coding, scoring 72.7% on SWE-bench Verified compared to 63.8%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4 cheaper than Gemini 2.5 Pro?
Yes, Gemini 2.5 Pro is cheaper. Claude Sonnet 4 costs $3.0/1M input and $15.0/1M output tokens. Gemini 2.5 Pro costs $1.3/1M input and $10.0/1M output tokens.
Which is faster, Claude Sonnet 4 or Gemini 2.5 Pro?
Claude Sonnet 4 is faster, generating output at 75 tok/s compared to 55 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4 vs Gemini 2.5 Pro comparison cover?
This comparison covers 17 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.