Grok 4.20 0309 vs Kimi K2 Thinking
xAI vs Moonshot AI — benchmarks, pricing, and capabilities side by side.
- •Grok 4.20 0309 has the higher intelligence index (88.5 vs 85.6)
- •Kimi K2 Thinking is cheaper ($0.60 vs $2.00 per 1M input)
- •Kimi K2 Thinking is faster
| Grok 4.20 0309 | Kimi K2 Thinking | |
|---|---|---|
| Intelligence index | 88.5 | 85.6 |
| Developer | xAI | Moonshot AI |
| Type | LLM | LLM |
| Access | — | Open weights |
| Context window | — | 262,144 tokens |
| Input price | $2.00 / 1M | $0.60 / 1M |
| Output price | $6.00 / 1M | $2.50 / 1M |
| Speed | 97 tok/s | 100 tok/s |
| Released | March 10, 2026 | November 6, 2025 |
| Parameters | — | 1T (32B active) |
| Input modalities | — | Text |
| Output modalities | — | Text |
Shared benchmarks
Grok 4.20 0309
Kimi K2 Thinking
GPQA Diamond
88.5
84.5
Humanity’s Last Exam
30
22.3