Free Powerful AI Coding Model: Z.AI GLM 5.2 on ZenMux

Z.AI has released GLM 5.2, a flagship model optimized for long-horizon tasks, agentic coding, and complex reasoning. With up to 1M context window and 128K output tokens, it excels at repo-scale refactors, multi-step planning, deep thinking, and tool use — making it one of the strongest open-weight models available right now.

The best part? You can access Z.AI: GLM 5.2 (Free) completely free (with rate limits) on ZenMux — no credit card required.

Quick Setup on ZenMux

1. Go to zenmux.ai and sign up (Google, GitHub, or email).
2. Head to the dashboard and generate your API key.
3. Use the model ID: z-ai/glm-5.2-free
4. Base URL: https://zenmux.ai/api/v1 (fully OpenAI-compatible).

This setup works seamlessly with Cursor, VS Code (Continue.dev), OpenCode, Claude Code, and any OpenAI-compatible tool. Developers are already using it for coding, debugging, refactoring, and building agents.

Key Highlights:

• Strong coding and long-context performance
• Supports deep thinking mode and reasoning effort control
• Streaming tool calls for real-time interaction
• Great alternative while testing frontier-level capabilities for free