GPT-5.4-Pro

Z.ai Launches GLM‑5.3, China’s AI Model Takes on GPT‑5.4‑Pro

Chinese startup Z.ai released GLM‑5.3 on Aug 14, 2026—a 210 B‑parameter model that rivals GPT‑5.4‑Pro in benchmarks while cutting costs by 70%, shaking the AI frontier.