Claude 3.5 Sonnet vs Gemini 3 Pro
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3 Pro by Google wins on 14 of 16 benchmarks against Claude 3.5 Sonnet by Anthropic, which leads on 2. 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 3 Pro scores 1492 on Chatbot Arena ELO compared to Claude 3.5 Sonnet's 1268, while Gemini 3 Pro scores 89.8% on MMLU-Pro compared to Claude 3.5 Sonnet's 73.0%, while Gemini 3 Pro scores 91.0% on IFEval compared to Claude 3.5 Sonnet's 86.0%.
Coding: In coding, Gemini 3 Pro scores 91.0% on HumanEval+ compared to Claude 3.5 Sonnet's 81.7%, while Gemini 3 Pro scores 65.0% on SWE-bench Verified compared to Claude 3.5 Sonnet's 49.0%, while Gemini 3 Pro scores 72.0% on LiveCodeBench compared to Claude 3.5 Sonnet's 38.0%.
Math: In math, Gemini 3 Pro scores 92.0% on MATH compared to Claude 3.5 Sonnet's 78.3%, while Gemini 3 Pro scores 97.5% on GSM8K compared to Claude 3.5 Sonnet's 91.0%, while Gemini 3 Pro scores 95.0% on AIME 2025 compared to Claude 3.5 Sonnet's 23.0%.
Reasoning: In reasoning, Gemini 3 Pro scores 91.9% on GPQA Diamond compared to Claude 3.5 Sonnet's 59.4%, while Gemini 3 Pro scores 54.0% on ARC-AGI compared to Claude 3.5 Sonnet's 15.0%.
Context: In context, Gemini 3 Pro scores 1.0M on Context Length compared to Claude 3.5 Sonnet's 200K.
Pricing Comparison
Claude 3.5 Sonnet costs $3.0/1M input tokens and $15.0/1M output tokens, while Gemini 3 Pro costs $2.0/1M input and $12.0/1M output. Gemini 3 Pro is the more affordable option for API usage.
Speed Comparison
Claude 3.5 Sonnet generates output at 70 tok/s compared to Gemini 3 Pro's 60 tok/s, and the time to first token is 400 ms for Claude 3.5 Sonnet versus 450 ms for Gemini 3 Pro. Claude 3.5 Sonnet delivers faster throughput.
Verdict
For developers prioritizing speed, Claude 3.5 Sonnet has the edge. For those who value coding and general intelligence and math and affordability, Gemini 3 Pro is the stronger choice.
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Claude 3.5 Sonnet vs Gemini 3 Pro — FAQ
Which is better, Claude 3.5 Sonnet or Gemini 3 Pro?
Gemini 3 Pro wins on more benchmarks overall (14 vs 2). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude 3.5 Sonnet compare to Gemini 3 Pro for coding?
Gemini 3 Pro is better for coding, scoring 65.0% on SWE-bench Verified compared to 49.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude 3.5 Sonnet cheaper than Gemini 3 Pro?
Yes, Gemini 3 Pro is cheaper. Claude 3.5 Sonnet costs $3.0/1M input and $15.0/1M output tokens. Gemini 3 Pro costs $2.0/1M input and $12.0/1M output tokens.
Which is faster, Claude 3.5 Sonnet or Gemini 3 Pro?
Claude 3.5 Sonnet is faster, generating output at 70 tok/s compared to 60 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude 3.5 Sonnet vs Gemini 3 Pro comparison cover?
This comparison covers 16 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.