Helena Tan

Product Manager
who builds with judgement.

I build platforms that other people build on. Today that is Box AI Studio, where enterprises build their own custom AI agents. Before that, developer and ML platforms at Niantic and Uber.

Independent work

This is where I follow my curiosity. I use AI to build and to teach me, then share what I discover with my community.

Each answer raised the next question

  1. Where it started Is AI really changing how PMs get hired? PM-AI Hiring Index ↓
  2. Building it, I kept running out of tokens. Which model should I actually use? Builder-Bench ↓
  3. Readers asked how I wrote the tests. How do you grade an AI agent’s work? Agent eval series ↓
  4. Then: did I need the expensive model at all? Can better tools make a cheaper model reliable enough? Scout ↓

AI and the PM job · May 2026 · Live

PM-AI Hiring Index

A web app that tracks, every day, where PMs are being hired and how much of that hiring asks for AI skills. I built it to replace opinions about the PM job market with data.

Built with
Claude Code
Scope
End to end
Refreshes
Daily

Model choice and cost · Jun 2026 · Live

Builder-Bench

A benchmark of how well coding agents turn real PM requests into working deliverables. I kept reaching for the flagship model out of habit, with no idea whether a cheaper one would do. I was just guessing, so I built a way to find out.

Real PM tasks
23
Categories
4
Models tested
6 Claude models

Agent tools and cost · Oct 2026 · Latest

Scout

A research agent that answers questions about Product Manager job postings, built to test whether better tools can make a cheaper model reliable enough for the job. They can, up to a point: tools cannot fix judgment. About half of Haiku’s failures were judgment errors that no tool change fixed.

Sonnet 5.5 with better tools, against Opus 5 with basic tools
93% vs 77%
Of the cost per attempt
28%
Haiku 4.5 on tasks it was not tuned against
About 30%

Career

Most of my career has been platform work: building the layer that other teams, developers and enterprises build on. Each role gave me a different shape. Put together in the chart below, they cover the full range of platform product work.

AI agents Evals andmeasurement ML and dataplatforms Developer platforms Customers andgo-to-market Enterprise andgovernance

Select a role to see its shape.

Self-assessed depth on six skills platform teams hire for, from light exposure at the center to deep ownership at the edge.

Contact

If you are building or evaluating agents too, I would love to compare notes.