GLM‑5.3 Arrives with 1M‑Token Context – How It Outperforms GLM‑5.2 and Cuts Costs
GLM‑5.3 introduces a 1 million‑token context window, 128 K output limit, mandatory reasoning, and new OpenAI‑compatible protocols, delivering up to 50 % better programming performance, stronger security‑vulnerability detection, and detailed migration guidance for developers in production.
