GLM-5.3 is open — except Z.ai is holding the weights back, and the reason is the story
This story is from 2026-08-23. It is preserved in the archive; the latest stories are on the live feed.
Z.ai launched GLM-5.3 on August 14, positioned for complex coding, long-running agent tasks, and — the part that caught my eye — cybersecurity analysis. It's the successor to GLM-5.2, which shipped MIT-licensed open weights and a million-token context window. And here's the detail that turned this…
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- 2026-08-23 02:08 · DEV Community — AI
GLM-5.3 is open — except Z.ai is holding the weights back, and the reason is the story