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

Blog

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

Contact

emailgithublinkedinscholar
© 2026 Kevin Chengkccheng.com