What is GLM 5.2? The new Chinese AI model that's rivaling Anthropic

Z.ai released GLM 5.2, an open-source Chinese AI model designed for long, complex coding tasks.

The company says it performs close to Anthropic’s Claude Opus 4.8 and OpenAI’s GPT-5.5 on several coding benchmarks.

GLM 5.2 includes a 1 million token context window, making it suitable for very large codebases and long workflows.

The model is pitched as a modifiable, borderless alternative to closed U.S. systems.

Its launch underscores China’s growing challenge to U.S. leadership in advanced AI, especially in software development.