grok-4.3 vs glm-5.1 Benchmark Comparison
Direct benchmark comparison between grok-4.3 and glm-5.1 based on LMArena Elo and the latest 2026 API pricing.
Direct Technical & Pricing Comparison
| Frontier Model |
LMArena Elo |
API Cost (1M) |
Throughput |
| grok-4.3 |
1456 |
$0.00000125 |
71 |
| glm-5.1 |
1471 |
$0.00000105 |
28 |
*These models represent the Pareto Frontier (optimal cost-to-performance).*
Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 15 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 claude-opus-4-7-thinking, which offers a superior benchmark-to-price ratio.