Atlas / Open-weight and challenger labs / GLM
GLM
AI Market Atlas · by Pro Pluribus
Z.ai (Zhipu) · China
GLM-5.3: billed as the strongest open-weight coding model.
Anthropic called GLM-5.3 the most cyber-capable open-weight model it has seen (29 Sep).
What it offers
Main offerings
- GLM-5.3
- 744B mixture-of-experts. Weights were released 28 Aug after a safety review.
- GLM Coding Plan
- Low-cost subscription that works with Claude Code-style tools.
Recent news
- Anthropic calls GLM-5.3 the most cyber-capable open-weight model it has seenThe open-weight frontier-risk debate centers on Zhipu.AI Weekly ↗
- Zhipu launches GLM-5.3, flagship weights held back for safety reviewA rare pause before releasing open weights; an MIT-licensed GLM-5.3-Flash followed on Aug 26Emergent ↗
- US CAISI at NIST publishes an assessment of GLM-5.2US government scrutiny puts GLM among the most-watched Chinese open modelsNIST ↗
- GLM-5.2 released as open weights with a 1M-token contextClose behind Kimi K3 on coding, and a steady open-weight release paceThe AI Rankings ↗
- GLM-5.1 open-sourced with a focus on long-horizon agentic codingContinues the rapid GLM-5 series after Zhipu's Hong Kong IPO in January 2026Presenc AI ↗
Compiled from public sources by Pro Pluribus; updated 16 Oct 2026. General information, not advice. Company names and logos belong to their owners and are used to identify them, without affiliation or endorsement. Terms