Anthropic Claude Sonnet 5 VS Google Gemini 3.1 Pro
Decision Recommendation
⚖️ Editorial Verdict: In our analysis, Gemini 3.1 Pro is the premium intelligence choice, scoring 9.0% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Claude Sonnet 5 is 1.1x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Claude Sonnet 5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Gemini 3.1 Pro fully justifies the cost.
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Model Specs
Claude Sonnet 5
Benchmarks & Scores
Coding (swe-bench-pro)Winner (+9.0%)
63.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
N/Agraduate-level science QA
Cost & Performance
Cost (per 1M tokens)1.1x cheaper
$4.00Input: $2.00 | Output: $10.00Context WindowLarger
1.05M tokensModel Specs
Gemini 3.1 Pro
Benchmarks & Scores
Coding (swe-bench-pro)
54.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
94.3%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$4.50Input: $2.00 | Output: $12.00Context Window
1M tokensFrequently Asked Questions about Claude Sonnet 5 vs Gemini 3.1 Pro comparison
Claude Sonnet 5 is cheaper than Gemini 3.1 Pro. Claude Sonnet 5 has a blended cost of $4.00/1M tokens, which is about 1.1x cheaper than Gemini 3.1 Pro at $4.50/1M tokens.
Claude Sonnet 5 is better for coding tasks on this benchmark. It scores 63.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Gemini 3.1 Pro which scores 54.2%.
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