Tech Apr 8, 2026 8 min Zhipu AI's GLM-5.1: An Agent Model That Doesn't Degrade After 600+ Iterations Zhipu AI releases GLM-5.1, a 744B MoE (40B active) model achieving 58.4% SOTA on SWE-Bench Pro. Its standout feature is sustained performance across 8-hour sessions with 6,000+ tool calls—no degradation. AI LLM Chinese AI MoE Open Model AI Agent
