Grok 4 vs Kimi K2
Kimi K2 leads in 4 of 8 categories
Arena ELO
Kimi K2
Cheaper
Kimi K2
Faster
Kimi K2
Detailed Comparison
| Category | Grok 4 | Kimi K2 |
|---|---|---|
| Provider | xAI | Moonshot |
| Context Window | 256K WIN | 128K |
| Input Price ($/1M) | $5 | $0.55 WIN |
| Output Price ($/1M) | $25 | $2.2 WIN |
| Arena ELO | 1330 | 1380 WIN |
| Coding | unknown | 65.8% SWE-bench |
| Reasoning | unknown | 60.2% BrowseComp |
| Speed (tokens/sec) | ~45 t/s | ~50 t/s WIN |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Grok 4 or Kimi K2?
Kimi K2 is approximately 91% cheaper than Grok 4 per million tokens.
Which is better for coding, Grok 4 or Kimi K2?
Grok 4 scores unknown on coding benchmarks, while Kimi K2 scores 65.8% SWE-bench.
Which has a larger context window?
Grok 4 supports 256K context, while Kimi K2 supports 128K.
Is Grok 4 or Kimi K2 open source?
Grok 4 is proprietary. Kimi K2 is open source.
Which ranks higher on the Chatbot Arena leaderboard?
Kimi K2 ranks higher with ELO 1380 vs 1330.
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