token.app › Compare › Kimi K3 vs Gemini 3.1 Pro Preview
Kimi K3 vs Gemini 3.1 Pro Preview
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
| Kimi K3 | Gemini 3.1 Pro Preview | |
|---|---|---|
| Provider | Moonshot AI | |
| Input $/1M | $3.00 | $2.00 |
| Output $/1M | $15.00 | $12.00 |
| Blended $/1M | $6.00 | $4.50 |
| Context window | 1.0M | 1.0M |
| Max output | — | 66K |
| Released | Jul 2026 | Feb 2026 |
| Licence | Open weights | Proprietary |
| GPQA Diamond | 93.1% | 94.4% |
| FrontierMath T1–3 | 72.2% | 59.6% |
| FrontierMath T4 | 39.0% | 26.8% |
| SimpleQA Verified | 42.7% | 77.3% |
| OTIS Mock AIME | 97.2% | 95.6% |
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 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)
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%)
FAQ
Which is better, Kimi K3 or Gemini 3.1 Pro Preview?
Across the 5 benchmarks both models have independently-run scores for, Kimi K3 leads on 3 and Gemini 3.1 Pro Preview leads on 2. Benchmarks are one input — price and context window are on this page too.
Is Kimi K3 cheaper than Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview is cheaper: $4.50 versus $6.00 per million tokens blended at 3:1 input:output. Input alone: $3.00 vs $2.00. Output alone: $15.00 vs $12.00.
What context windows do Kimi K3 and Gemini 3.1 Pro Preview have?
Kimi K3: 1,048,576 tokens. Gemini 3.1 Pro Preview: 1,048,576 tokens.
Who makes Kimi K3 and Gemini 3.1 Pro Preview?
Kimi K3 is made by Moonshot AI. Gemini 3.1 Pro Preview is made by Google.