kccheng.com

Kevin (Kai-Chen) Cheng

Principal AI Engineer at Eight Sleep · previously Staff Engineer at Apple Intelligence

I build agentic AI products and publish the research behind them.

About

Who. AI engineer working between research and product, strongest at 0→1. Currently leading foundation model applications at Eight Sleep for sleep and health. Previously Staff Engineer at Apple Intelligence.

What I do. Reasoning, agentic systems (insight, self-evolution, agentic research), and agent evaluation.

Publications

2026ASTRA-bench: Evaluating Tool-Use Agent Reasoning and Action Planning with Personal User ContextXiu, Sun, Cheng, Patel, Date, Zhang, Lu, Attia, Vemulapalli, Tuzel, Cao, Bengio · arXiv:2603.01357, Mar 2026arxivpdf
2026Think Fast, Talk Smart: Partitioning Deterministic and Neural Computation for Structured Health Text GenerationarXiv:2605.29652, May 2026arxivpdf
2023Feedback Effect in User Interaction with Intelligent Assistants: Delayed Engagement, Adaption and Drop-outarXiv:2303.10255 · PAKDDarxivpdf

Projects

2026deep-listenerA Claude Code skill · agent loop · Aug 2026Turns Claude into a companion you can talk to, not just ask. Listens for what matters, reflects it back, and leaves room for you to keep going. Sometimes what people need isn’t advice. It’s to feel understood. deep-listener tries to do that.github

Blog

Working notes on agent evaluation, foundation-model applications, and agentic systems. See the full list →

Contact

emailgithublinkedinscholar
© 2026 Kevin Chengkccheng.com