Jason Liu

Founder, 567 Studios. Former Staff ML Engineer at Stitch Fix (2018–2023). Ex‑Meta (2017). Built AI systems driving $50M+ annual revenue. Creator of Instructor (6M+ monthly downloads). Waterloo (Computational Mathematics & Statistics). Based in New York.

I help engineering teams ship AI: faster cycles, cleaner data, clearer evaluation, real outcomes. Core beliefs: outcomes over tasks, simplicity over complexity, speed over perfection.

Work

• Consulting: help engineering teams ship AI
• Open source: Instructor — structured outputs for LLMs

Training

• Systematically Improving RAG Applications
• 3‑Day AI Coding Accelerator (with Vignesh Mohankumar)

Investing Angel investor and a16z scout. Backed: Pydantic Logfire, Modal, Exa, Shaped, Rork, Lovable, Browserbase, Raindrop, Julius, Extend, Vantager, and others.

Contact work@jxnl.co