Gemini 3.1 Flash Lite vs Gemini 3.1 Pro
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3.1 Pro by Google wins on 4 of 8 benchmarks against Gemini 3.1 Flash Lite by Google, which leads on 3. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Gemini 3.1 Pro scores 1256 on Design Arena ELO compared to Gemini 3.1 Flash Lite's 1090, while Gemini 3.1 Pro scores 1246 on Website Arena ELO compared to Gemini 3.1 Flash Lite's 1095.
Reasoning: In reasoning, Gemini 3.1 Pro scores 94.4% on GPQA Diamond compared to Gemini 3.1 Flash Lite's 80.1%, while Gemini 3.1 Pro scores 75.3% on τ²-Bench Airline compared to Gemini 3.1 Flash Lite's 72.3%.
Context: In context, both score 1.0M on Context Length.
Pricing Comparison
Gemini 3.1 Flash Lite costs $0.25/1M input tokens and $1.5/1M output tokens, while Gemini 3.1 Pro costs $2.0/1M input and $12.0/1M output. Gemini 3.1 Flash Lite is the more affordable option for API usage.
Verdict
Gemini 3.1 Flash Lite leads across the board in affordability, making it the stronger overall choice in this comparison.
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Gemini 3.1 Flash Lite vs Gemini 3.1 Pro — FAQ
Which is better, Gemini 3.1 Flash Lite or Gemini 3.1 Pro?
Gemini 3.1 Pro wins on more benchmarks overall (4 vs 3). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 3.1 Flash Lite compare to Gemini 3.1 Pro for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Gemini 3.1 Flash Lite cheaper than Gemini 3.1 Pro?
Yes, Gemini 3.1 Flash Lite is cheaper. Gemini 3.1 Flash Lite costs $0.25/1M input and $1.5/1M output tokens. Gemini 3.1 Pro costs $2.0/1M input and $12.0/1M output tokens.
Which is faster, Gemini 3.1 Flash Lite or Gemini 3.1 Pro?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Gemini 3.1 Flash Lite vs Gemini 3.1 Pro comparison cover?
This comparison covers 8 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, Cached Input Cost, Design Arena ELO, τ²-Bench Airline, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.