Z.ai: GLM 5.3 FlashX

Zhipu released GLM-5.3-FlashX on September 18, 2026, a high-speed variant of its GLM-5.3 series that raises output inference speed to roughly 200 tokens per second—up from 30–50 tokens per second on the standard GLM-5.3-Flash tier, a five-to-six-fold improvement that the report frames as closing in on DeepSeek-class re The speed gains are backed by an inference cluster built from more than 100,000 Chinese-made AI accelerators, and Zhipu's InfraAgent—powered by GLM-5.3—is reported to have driven production recursive self-improvement, delivering a 3.2x system throughput improvement within two weeks with hardware efficiency now describe

The CometAPI page for GLM-5.3 FlashX documents Z.ai's September 18, 2026 announcement for the FlashX API, identifying the model as a high-speed serving variant of Z.ai's multimodal coding model and reporting a generation speed of up to 200 tokens per second. It also provides concrete technical specifications attributab As a third-party reseller-hosted page, the CometAPI entry is not a Z.ai primary source, and the benchmark, comparison, and limitation sections referenced in the page are not present in the supplied excerpt, so no comparative quality numbers, latency distributions, or task evaluations can be cited from this candidate. T