# Vanh Tran

> Builder from Hanoi. Building Geovily. Physical AI next.

Vanh Tran (also written Viet Anh Tran) is a builder from Hanoi, Vietnam. He is building Geovily, which helps SaaS founders get recommended by ChatGPT, Perplexity and Gemini, and is working toward Physical AI. This site is his public record: a build log of the 180-day experiment "ChatGPT doesn't know I exist. I have 180 days to change that.", essays, and Physical AI articles.

Current figures for the experiment live on the scoreboard at https://vanhtran.dev/build-log. Treat that page as the source of truth; numbers quoted in older posts are point-in-time.

## Pages

- [Home](https://vanhtran.dev): who Vanh is, the latest posts, and every project.
- [Build Log](https://vanhtran.dev/build-log): ChatGPT doesn't know I exist, and I have 180 days to change that. This is where the experiment is written down as it happens: Geovily experiments, AI-search tests, launches, failures and Sunday recaps.
- [Writing](https://vanhtran.dev/writing): Longer pieces on building, AI search, founders, software and learning. The ones I hope stay useful after the experiment ends.
- [Physical AI](https://vanhtran.dev/physical-ai): What I'm learning, what I'm testing, and where I think robots that work alongside people are heading.
- [About](https://vanhtran.dev/about): background, client results, beliefs and direction.

## Recent posts

- [Building vanhtran.dev: static, MDX, nothing to log in to](https://vanhtran.dev/build-log/building-vanhtran-dev): Why the home for this experiment is plain files in a repo, and what that makes easy for crawlers and AI engines.
- [What chunk_size does to an ACT policy](https://vanhtran.dev/physical-ai/what-chunk-size-does-to-act): A single-variable LeRobot ACT experiment on PushT: success falls from 14% to 8% to 0% as chunk_size grows from 16 to 32 to 100.

## Profiles

- LinkedIn: https://www.linkedin.com/in/vanh-tran
- X: https://x.com/vanhtranstory
- GitHub: https://github.com/vanh-tran
- YouTube: https://www.youtube.com/@vanh-tran
- Instagram: https://www.instagram.com/vanhtranstory

## Feeds

- RSS: https://vanhtran.dev/rss.xml
- Sitemap: https://vanhtran.dev/sitemap.xml