kimi-k2.5-thinking vs hy3 Benchmark Comparison
Direct benchmark comparison between kimi-k2.5-thinking and hy3 based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| kimi-k2.5-thinking |
1451 |
$4.5e-7 |
107 |
| hy3 |
1455 |
$1.32e-7 |
86 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 4 points. The choice between them should be driven by specific API features or provider preference. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate hy4-preview, which offers a superior benchmark-to-price ratio.