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Z.ai released GLM-5.2 on 2026-06-16 with MIT-licensed open weights available on…

2026-06-16 · 18:16 UTC ·@0xSero ·0 min read

Brief

GLM-5.2 from Z.ai is a frontier intelligence LLM announced 2026-06-16 that emphasizes coding and agentic task performance, a 1M-token context window, and two operating modes (max for peak performance, high for better token efficiency). Z.ai published MIT-licensed open weights on Hugging Face, documentation and API guides, and kept API pricing identical to GLM-5.1.

Why it matters

Z.ai released GLM-5.2 on 2026-06-16 with MIT-licensed open weights available on Hugging Face and the same API pricing as GLM-5.1.

Key details

  • GLM-5.2 adds major gains in coding and agentic tasks, supports a 1,000,000-token (1M) context window, and offers two reasoning-effort modes: GLM-5.2 (max) and GLM-5.2 (high).
Source evidence

The only MIT that beats our top models.

Z.ai (@Zai_org)

Introducing GLM-5.2: Frontier Intelligence, Open Weights

  • Significant improvements in coding and agentic tasks
  • Strong long-horizon capabilities with a 1M context window
  • Two levels of reasoning effort: GLM-5.2 (max) pushes the limits, while GLM-5.2 (high) strikes a strong balance between performance and token efficiency
  • MIT-licensed open weights
  • Same API pricing as GLM-5.1

Tech Blog: z.ai/blog/glm-5.2
Weights: huggingface.co/zai-org/GLM-5…
API: docs.z.ai/guides/llm/glm-5.2
Coding Plan: z.ai/subscribe
Chat: chat.z.ai

— https://nitter.net/Zai_org/status/2066938937344495629#m