Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Kimi K2 0905 | Grok 4.3 (medium) |
|---|---|---|
| Input ($/M tokens) | $0.6 | $1.25 |
| Output ($/M tokens) | $2.5 | $2.5 |
Data from Artificial Analysis API — 12 benchmarks
Kimi K2 0905 is cheaper overall. Its blended price (3:1 input/output ratio) is $1.07/M tokens vs $1.56/M for Grok 4.3 (medium).
Grok 4.3 (medium) wins 6 out of 12 benchmarks compared to 4 for Kimi K2 0905. See the detailed benchmark chart above for per-category results.
Grok 4.3 (medium) generates tokens faster at 103 tok/s vs 37 tok/s. Kimi K2 0905 also has lower time-to-first-token (1.20s vs 21.73s).
Choose based on your priorities: Kimi K2 0905 for lower cost, Grok 4.3 (medium) for stronger benchmark performance, and Grok 4.3 (medium) for faster generation. For latency-sensitive apps, check the TTFT comparison above.