Shanghai Artificial Intelligence Laboratory released Atria Dawn Preview, a 744-billion-parameter open-weight agentic AI model, under an MIT license with no accompanying announcement, blog post, or research paper. Built on a GLM-5.2-based mixture-of-experts foundation, the model targets agentic research and coding tasks requiring tool use and multi-step reasoning, and is offered for free self-hosting alongside a free API preview. The lab claims strong results on tool-heavy benchmarks, though these figures remain unverified by independent evaluators, and users must cover their own hosting infrastructure rather than paying per-token fees.