gpt-5.5 vs hy4-preview Benchmark Comparison
Direct benchmark comparison between gpt-5.5 and hy4-preview based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| gpt-5.5 |
1477 |
$0.00000125 |
74 |
| hy4-preview |
1631 |
$8.34e-7 |
30 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: hy4-preview is the more capable model in this pair, leading by 154 Elo points. Specifically, hy4-preview is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.