Introducing GLM-5.2 Fast

Introduced GLM-5.2 Fast, a new Model API tier optimized for per-user throughput for real-time agentic workloads. This tier preserves the ease-of-use of standard Model APIs with tighter performance SLAs, handling variable and bursty workloads with small variance in throughput and latency. The change is a one-line model slug update, allowing for cost-efficient routing of latency-sensitive agentic loops to Fast and latency-tolerant batch tasks to standard GLM-5.2.