Claude 3 Opus vs Gemini 3 Flash
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3 Flash by Google wins on 15 of 15 benchmarks against Claude 3 Opus by Anthropic, which leads on 0. 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 Flash scores 1473 on Chatbot Arena ELO compared to Claude 3 Opus's 1240, while Gemini 3 Flash scores 88.6% on MMLU-Pro compared to Claude 3 Opus's 68.0%, while Gemini 3 Flash scores 89.0% on IFEval compared to Claude 3 Opus's 82.0%.
Coding: In coding, Gemini 3 Flash scores 86.0% on HumanEval+ compared to Claude 3 Opus's 78.0%, while Gemini 3 Flash scores 78.0% on SWE-bench Verified compared to Claude 3 Opus's 22.0%, while Gemini 3 Flash scores 55.0% on LiveCodeBench compared to Claude 3 Opus's 32.0%.
Math: In math, Gemini 3 Flash scores 85.0% on MATH compared to Claude 3 Opus's 68.0%, while Gemini 3 Flash scores 95.0% on GSM8K compared to Claude 3 Opus's 88.0%.
Reasoning: In reasoning, Gemini 3 Flash scores 72.0% on GPQA Diamond compared to Claude 3 Opus's 59.4%, while Gemini 3 Flash scores 30.0% on ARC-AGI compared to Claude 3 Opus's 8.0%.
Context: In context, Gemini 3 Flash scores 1.0M on Context Length compared to Claude 3 Opus's 200K.
Pricing Comparison
Claude 3 Opus costs $15.0/1M input tokens and $75.0/1M output tokens, while Gemini 3 Flash costs $0.50/1M input and $3.0/1M output. Gemini 3 Flash is the more affordable option for API usage.
Speed Comparison
Claude 3 Opus generates output at 25 tok/s compared to Gemini 3 Flash's 200 tok/s, and the time to first token is 800 ms for Claude 3 Opus versus 100 ms for Gemini 3 Flash. Gemini 3 Flash delivers faster throughput.
Verdict
Gemini 3 Flash leads across the board in coding, general intelligence, math, affordability, speed, making it the stronger overall choice in this comparison.
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Claude 3 Opus vs Gemini 3 Flash — FAQ
Which is better, Claude 3 Opus or Gemini 3 Flash?
Gemini 3 Flash wins on more benchmarks overall (15 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude 3 Opus compare to Gemini 3 Flash for coding?
Gemini 3 Flash is better for coding, scoring 78.0% on SWE-bench Verified compared to 22.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude 3 Opus cheaper than Gemini 3 Flash?
Yes, Gemini 3 Flash is cheaper. Claude 3 Opus costs $15.0/1M input and $75.0/1M output tokens. Gemini 3 Flash costs $0.50/1M input and $3.0/1M output tokens.
Which is faster, Claude 3 Opus or Gemini 3 Flash?
Gemini 3 Flash is faster, generating output at 200 tok/s compared to 25 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude 3 Opus vs Gemini 3 Flash comparison cover?
This comparison covers 15 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.