Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Kimi K2 | Grok 4.3 (Non-reasoning) |
|---|---|---|
| Input ($/M tokens) | $0.585 | $1.25 |
| Output ($/M tokens) | $2.4 | $2.5 |
Data from Artificial Analysis API — 12 benchmarks
Kimi K2 is cheaper overall. Its blended price (3:1 input/output ratio) is $1.04/M tokens vs $1.56/M for Grok 4.3 (Non-reasoning).
Kimi K2 wins 7 out of 12 benchmarks compared to 5 for Grok 4.3 (Non-reasoning). See the detailed benchmark chart above for per-category results.
Grok 4.3 (Non-reasoning) generates tokens faster at 72 tok/s vs 34 tok/s. However, Grok 4.3 (Non-reasoning) has lower time-to-first-token (0.57s vs 1.11s).
Choose based on your priorities: Kimi K2 for lower cost, Kimi K2 for stronger benchmark performance, and Grok 4.3 (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.