kimi-k3 vs grok-4.5 Benchmark Comparison
Direct benchmark comparison between kimi-k3 and grok-4.5 based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| kimi-k3 |
1486 |
$0.000003 |
23 |
| grok-4.5 |
1465 |
$0.000002 |
69 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 21 points. The choice between them should be driven by specific API features or provider preference.