Z.ai says FlashX reaches 200 tokens/s

Z.ai says GLM-5.3-FlashX is live at 200 tokens per second, its faster serving option for the 320-billion-parameter, 18-billion-active multimodal model. Z.ai’s model documentation lists that speed and a 1-million-token context window, but the headline is vendor-reported and does not establish tail latency, price, or quality on your workload. Builders evaluating open-model alternatives should read Arcee’s distinction between active and total parameters the same way: benchmark end-to-end throughput and memory before treating a token-rate claim as a deployment decision.