token.app › Compare › Gemini 3.1 Pro Preview vs Kimi K3

Gemini 3.1 Pro Preview vs Kimi K3

Kimi K3 leads on 3 of 5 shared benchmarks. Gemini 3.1 Pro Preview is 1.3× cheaper per token on a blended 3:1 basis.

Head to head
Blended price uses a 3:1 input:output mix
Gemini 3.1 Pro PreviewKimi K3
ProviderGoogleMoonshot AI
Input $/1M$2.00$3.00
Output $/1M$12.00$15.00
Blended $/1M$4.50$6.00
Context window1.0M1.0M
Max output66K—
ReleasedFeb 2026Jul 2026
LicenceProprietaryOpen weights
GPQA Diamond 94.4% 93.1%
FrontierMath T1–3 59.6% 72.2%
FrontierMath T4 26.8% 39.0%
SimpleQA Verified 77.3% 42.7%
OTIS Mock AIME 95.6% 97.2%
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose Gemini 3.1 Pro Preview if…
  • Costs less per token — $4.50 vs $6.00 blended
  • Higher GPQA Diamond (94.4% vs 93.1%)
  • Higher SimpleQA Verified (77.3% vs 42.7%)
Choose Kimi K3 if…
  • Higher FrontierMath T1–3 (72.2% vs 59.6%)
  • Higher FrontierMath T4 (39.0% vs 26.8%)
  • Higher OTIS Mock AIME (97.2% vs 95.6%)
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
FAQ
Which is better, Gemini 3.1 Pro Preview or Kimi K3?
Across the 5 benchmarks both models have independently-run scores for, Gemini 3.1 Pro Preview leads on 2 and Kimi K3 leads on 3. Benchmarks are one input — price and context window are on this page too.
Is Gemini 3.1 Pro Preview cheaper than Kimi K3?
Gemini 3.1 Pro Preview is cheaper: $4.50 versus $6.00 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $3.00. Output alone: $12.00 vs $15.00.
What context windows do Gemini 3.1 Pro Preview and Kimi K3 have?
Gemini 3.1 Pro Preview: 1,048,576 tokens. Kimi K3: 1,048,576 tokens.
Who makes Gemini 3.1 Pro Preview and Kimi K3?
Gemini 3.1 Pro Preview is made by Google. Kimi K3 is made by Moonshot AI.
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