Z.ai Chat (z.ai)
Consumer assistant powered by GLMNot checked yetView source ↗
Live service health
The Z.ai ecosystem, verified from your browser. Each card probes its official surface, measures response time and reports exactly what it can and cannot confirm.
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Z.ai API (api.z.ai)
GLM model access for developersNot checked yetView source ↗
Developer Docs (docs.z.ai)
Documentation and devpack guidesNot checked yetView source ↗
GLM Coding Plan
Subscription for coding agentsNot checked yetView source ↗
The evolution of Z.ai
From Tsinghua research lab to open-weight frontier challenger — the GLM story in ten steps.
2022Origin
From ChatGLM to Zhipu
Zhipu AI, spun out of Tsinghua University research, releases the earliest ChatGLM models and open-sources ChatGLM-6B, seeding a global open-model community.
ChatGLM-6B ↗2024Global brand
Z.ai goes international.
Zhipu launches Z.ai as its international platform and API brand, bringing the GLM family to global developers alongside continuing open-weight releases.
Z.ai platform ↗July 2025MoE flagship
GLM-4.5 unifies reasoning, coding and agents.
GLM-4.5 ships as a 355B-parameter mixture-of-experts family focused on reasoning, coding and agentic ability, with open weights on Hugging Face and Z.ai API access from day one.
GLM-4.5 announcement ↗30 September 2025Coding agent
GLM-4.6 targets real development work.
GLM-4.6 advances agentic, reasoning and coding ability, extends context toward 200K tokens and lands as open weights, quickly becoming a favorite in coding tools.
GLM-4.6 announcement ↗8 December 2025Vision
GLM-4.6V opens the multimodal door.
The GLM-4.6V series brings native multimodal understanding to the open-source lineup, served through the API and runnable locally from public weights.
GLM-4.6V announcement ↗22 December 2025Real-world dev
GLM-4.7 hardens the toolchain.
GLM-4.7 ships tuned for real-world development environments, cementing the GLM Coding Plan as a lower-cost alternative for AI-assisted engineering.
GLM-4.7 release ↗February 2026Generation 5
GLM-5 opens the next generation.
Z.ai releases GLM-5 as its next-generation flagship for complex systems engineering and long-horizon agentic work, evaluated on its CC-Bench-V2 suite.
GLM-5 announcement ↗7 April 2026Long horizon
GLM-5.1 goes long.
GLM-5.1 arrives as the flagship for long-horizon agentic engineering, with significantly stronger coding capability than its predecessor.
GLM-5.1 announcement ↗14 August 2026Open frontier
GLM-5.3 ships with open weights.
GLM-5.3 launches as the new frontier family, and GLM-5.3-Flash follows weeks later at flash cost with public weights, keeping the open-release cadence unusual among frontier labs.
GLM-5.3 announcement ↗26 August 2026Flash cost
GLM-5.3-Flash makes agents cheap.
GLM-5.3-Flash brings frontier-adjacent intelligence to high-volume agent workloads, with weights public on Hugging Face and instant availability through the Z.ai API and assistant.
GLM-5.3-Flash announcement ↗Live incident intelligence
Z.ai does not publish an official incident feed. These verified references cover where service signals actually come from — official notices, security research and community reports.
Z.ai status expectations
Z.ai does not publish an official public status page or incident feed. This monitor probes the public surfaces instead, and the archive below links to primary announcements and plan notices.
Z.ai ↗GLM Coding Plan usage notices
Z.ai documents subscription and usage changes through its developer notice pages, the closest official channel to plan-affecting service changes.
Z.ai docs ↗GLM-5.3 security research
Post-training testing of GLM-5.3 surfaced critical vulnerabilities in widely used software, a reminder that model capability and platform reliability are different risk axes.
Tech Times ↗Community outage reports
Developer communities such as r/ZaiGLM report Coding Plan interruptions in real time. Treat them as signals to verify, not confirmed incidents.
Reddit r/ZaiGLM ↗Browser-side checks60-second refreshUTC timestampsNo false greenIndependent monitorAccessible motion
Built for clarity
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What a green card means
Your browser reached the official surface within the healthy latency window during the last check. It is a direct, recent observation — not a cached promise.
What a grey card means
The probe could not complete — often because a surface restricts cross-origin browser requests. That is a statement about this dashboard's visibility, not about Z.ai's health, so no verdict is issued.