token.app › Compare › Grok 4.20 vs Kimi K2.6
Grok 4.20 vs Kimi K2.6
Kimi K2.6 leads on 5 of 5 shared benchmarks. Kimi K2.6 is 1.5× cheaper per token on a blended 3:1 basis. Grok 4.20 accepts the larger context window (2M).
Head to head
Blended price uses a 3:1 input:output mix
| Grok 4.20 | Kimi K2.6 | |
|---|---|---|
| Provider | xAI | Moonshot AI |
| Input $/1M | $1.25 | $0.580 |
| Output $/1M | $2.50 | $2.44 |
| Blended $/1M | $1.56 | $1.04 |
| Context window | 2M | 262K |
| Max output | — | 262K |
| Released | Mar 2026 | Apr 2026 |
| Licence | Proprietary | Open weights |
| GPQA Diamond | 89.3% | 90.8% |
| FrontierMath T1–3 | 44.9% | 57.2% |
| FrontierMath T4 | 17.1% | 25.6% |
| SimpleQA Verified | 35.1% | 38.7% |
| OTIS Mock AIME | 92.2% | 96.1% |
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 Grok 4.20 if…
- Larger context window (2M)
Choose Kimi K2.6 if…
- Costs less per token — $1.04 vs $1.56 blended
- Higher GPQA Diamond (90.8% vs 89.3%)
- Higher FrontierMath T1–3 (57.2% vs 44.9%)
- Higher FrontierMath T4 (25.6% vs 17.1%)
- Higher SimpleQA Verified (38.7% vs 35.1%)
- Open weights — self-hostable
- Newer model (released Apr 2026)
FAQ
Which is better, Grok 4.20 or Kimi K2.6?
Across the 5 benchmarks both models have independently-run scores for, Grok 4.20 leads on 0 and Kimi K2.6 leads on 5. Benchmarks are one input — price and context window are on this page too.
Is Grok 4.20 cheaper than Kimi K2.6?
Kimi K2.6 is cheaper: $1.04 versus $1.56 per million tokens blended at 3:1 input:output. Input alone: $1.25 vs $0.580. Output alone: $2.50 vs $2.44.
What context windows do Grok 4.20 and Kimi K2.6 have?
Grok 4.20: 2,000,000 tokens. Kimi K2.6: 262,144 tokens.
Who makes Grok 4.20 and Kimi K2.6?
Grok 4.20 is made by xAI. Kimi K2.6 is made by Moonshot AI.