China's Z.ai open-sourced a frontier coding model the same day Washington banned its American rival

Z.ai released GLM-5.2, a 744-billion-parameter open-weights model under MIT license, on the same day the US banned Anthropic's Fable 5 for foreign users. The model beats GPT-5.5 on coding benchmarks at one-sixth the API cost and is freely self-hostable with no regional restrictions, reshaping the infrastructure calculus for developers building outside the US.