Jason Liu¶

Staff-level machine learning engineer, angel investor, startup advisor, and a16z scout. Writing about open source and improving RAG applications.

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Popular Posts¶

• Context Engineering Series: Building Better Agentic RAG Systems
• Advice to Young People, The Lies I Tell Myself

Investments¶

Angel investor and scout for Andreessen Horowitz. Invested in companies like Lovable, Modal, Exa, Browserbase, Raindrop.ai, Julius AI, Vantager, Pydantic, and others. See full portfolio.

Consulting¶

Previously ran a solo consulting practice focused on helping startups as many software companies transitioned to AI. Including Zapier, HubSpot, Limitless AI, Weights & Biases, Modal Labs, Timescale, and Pydantic. To learn more about how I thought about indie consulting, see this page.

Training¶

Ran cohort-based training programs including AI agent decoding, retrieval augmented generation, and how to be a better freelancer/independent consultant. Students came from OpenAI, Anthropic, Google, Microsoft, Amazon, Salesforce, Adobe, McKinsey & Company, and others.

Also the creator of Instructor, a popular Python library for structured outputs from LLMs, which was cited by the OpenAI team as inspiration for their structured output feature.