Do the right thing,
make it beautiful.

I'm Sun Xin, an AI product manager working on agents. I think a good product starts by making "good" measurable — the benchmark is what really defines it.

See my work → Read the blog
  • AI Agent Product Manager
  • AI Agent Design
  • Enterprise AI Agents
  • Agent Evaluation
  • AI Agent Benchmark
  • Agentic Workflows
Sun Xin, on the Bund in Shanghai

Blog

All posts →
  1. 01 Loop Engineering Is Inference-Time RL
  2. 02 Designing Loops Is Your Next Leverage
  3. 03 How Far You Can Let an AI Off the Leash Depends on Whether You Can Check Its Work

Selected work

All work →
  1. 01 loop-engineering-skill Claude Code skill
  2. 02 Chinese-Geo SEO / GEO toolkit