Claude Opus 4 vs Gemini 2.5 Flash Lite
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Opus 4 by Anthropic wins on 9 of 15 benchmarks against Gemini 2.5 Flash Lite by Google, which leads on 6. 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, Claude Opus 4 scores 1375 on Chatbot Arena ELO compared to Gemini 2.5 Flash Lite's 1230, while Claude Opus 4 scores 83.0% on MMLU-Pro compared to Gemini 2.5 Flash Lite's 63.0%.
Coding: In coding, Claude Opus 4 scores 90.0% on HumanEval+ compared to Gemini 2.5 Flash Lite's 70.0%, while Claude Opus 4 scores 72.5% on SWE-bench Verified compared to Gemini 2.5 Flash Lite's 22.0%, while Claude Opus 4 scores 60.0% on LiveCodeBench compared to Gemini 2.5 Flash Lite's 28.0%.
Math: In math, Claude Opus 4 scores 86.0% on MATH compared to Gemini 2.5 Flash Lite's 62.0%, while Claude Opus 4 scores 95.0% on GSM8K compared to Gemini 2.5 Flash Lite's 83.0%.
Reasoning: In reasoning, Claude Opus 4 scores 79.6% on GPQA Diamond compared to Gemini 2.5 Flash Lite's 55.0%, while Claude Opus 4 scores 45.0% on ARC-AGI compared to Gemini 2.5 Flash Lite's 14.0%.
Context: In context, Gemini 2.5 Flash Lite scores 1.0M on Context Length compared to Claude Opus 4's 200K.
Pricing Comparison
Claude Opus 4 costs $15.0/1M input tokens and $75.0/1M output tokens, while Gemini 2.5 Flash Lite costs $0.10/1M input and $0.40/1M output. Gemini 2.5 Flash Lite is the more affordable option for API usage.
Speed Comparison
Claude Opus 4 generates output at 50 tok/s compared to Gemini 2.5 Flash Lite's 240 tok/s, and the time to first token is 550 ms for Claude Opus 4 versus 70 ms for Gemini 2.5 Flash Lite. Gemini 2.5 Flash Lite delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math, Claude Opus 4 has the edge. For those who value affordability and speed, Gemini 2.5 Flash Lite is the stronger choice.
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Claude Opus 4 vs Gemini 2.5 Flash Lite — FAQ
Which is better, Claude Opus 4 or Gemini 2.5 Flash Lite?
Claude Opus 4 wins on more benchmarks overall (9 vs 6). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Opus 4 compare to Gemini 2.5 Flash Lite for coding?
Claude Opus 4 is better for coding, scoring 72.5% on SWE-bench Verified compared to 22.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Opus 4 cheaper than Gemini 2.5 Flash Lite?
Yes, Gemini 2.5 Flash Lite is cheaper. Claude Opus 4 costs $15.0/1M input and $75.0/1M output tokens. Gemini 2.5 Flash Lite costs $0.10/1M input and $0.40/1M output tokens.
Which is faster, Claude Opus 4 or Gemini 2.5 Flash Lite?
Gemini 2.5 Flash Lite is faster, generating output at 240 tok/s compared to 50 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Opus 4 vs Gemini 2.5 Flash Lite comparison cover?
This comparison covers 15 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.