gpt-5.5 vs grok-4.5 Benchmark Comparison
Direct benchmark comparison between gpt-5.5 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 |
| gpt-5.5 |
1475 |
$0.00000125 |
57 |
| grok-4.5 |
1572 |
$0.000002 |
83 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: grok-4.5 is the more capable model in this pair, leading by 97 Elo points.