Gemini 3.1 Pro vs Kimi K3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Gemini 3.1 Pro by Google and Kimi K3 by Moonshot AI are evenly matched across 11 benchmarks. 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, Kimi K3 scores 43.8 on AA Intelligence Index compared to Gemini 3.1 Pro's 30.4.
Coding: In coding, Kimi K3 scores 76.2 on AA Coding Index compared to Gemini 3.1 Pro's 68.8, while Kimi K3 scores 1377 on Design Arena ELO compared to Gemini 3.1 Pro's 1256, while Kimi K3 scores 1352 on Website Arena ELO compared to Gemini 3.1 Pro's 1246.
Reasoning: In reasoning, Gemini 3.1 Pro scores 94.4% on GPQA Diamond compared to Kimi K3's 91.5%, while Kimi K3 scores 50.6 on AA Agentic Index compared to Gemini 3.1 Pro's 10.3, while Gemini 3.1 Pro scores 75.3% on τ²-Bench Airline compared to Kimi K3's 70.9%.
Context: In context, both score 1.0M on Context Length.
Pricing Comparison
Gemini 3.1 Pro costs $2.0/1M input tokens and $12.0/1M output tokens, while Kimi K3 costs $2.6/1M input and $13.3/1M output. Gemini 3.1 Pro is the more affordable option for API usage.
Verdict
Gemini 3.1 Pro leads across the board in affordability, making it the stronger overall choice in this comparison.
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Gemini 3.1 Pro vs Kimi K3 — FAQ
Which is better, Gemini 3.1 Pro or Kimi K3?
Gemini 3.1 Pro and Kimi K3 are evenly matched across benchmarks. The best choice depends on your specific priorities such as coding ability, speed, or pricing.
How does Gemini 3.1 Pro compare to Kimi K3 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 Pro cheaper than Kimi K3?
Yes, Gemini 3.1 Pro is cheaper. Gemini 3.1 Pro costs $2.0/1M input and $12.0/1M output tokens. Kimi K3 costs $2.6/1M input and $13.3/1M output tokens.
Which is faster, Gemini 3.1 Pro or Kimi K3?
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 Pro vs Kimi K3 comparison cover?
This comparison covers 11 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, AA Intelligence Index, AA Coding Index, AA Agentic Index, Cached Input Cost, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.