A new artificial intelligence model from China is catching up to other leading American AI models.
Called GLM 5.2, the company behind it, Z.ai, unleashed it just a day after the United States banned Anthropic from supplying its Fable 5 and Mythos models to non-Americans earlier this month, before the controls were lifted on June 30.
Z.ai claims that its model’s performance is almost on par with Anthropic’s Claude Opus 4.8 and OpenAI’s GPT 5.5. It also operates on a 1 million token context window, meaning it can hold roughly 750,000 words in working memory at once.
GLM 5.2 is designed to run long coding tasks and maintains “quality across long, messy coding-agent trajectories,” the company said.
GLM-5.2 was tested on three benchmarks of long, complex coding work. On open-ended technical projects lasting hours to days, it trails Opus 4.8 by just 1% while edging past GPT-5.5 and Opus 4.7, the company said.
