# William Fu-Hinthorn

> William Fu-Hinthorn is langMem-associated founding engineer; current affiliation disputed. LangMem on Anchor Terminal, with grades, an about and public profiles.

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- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

LangMem-associated founding engineer; current affiliation disputed.

- X: https://x.com/WHinthorn

## What William builds

- [LangMem](https://www.anchorterminal.com/tools/langmem.md), graded D, 48.3/100, in Agent memory. LangMem is LangChain's open-source Python library for long-term agent memory. It extracts facts from conversations with an LLM, stores and searches them in a LangGraph store the owner runs, and includes two memory tools, message summarisation and prompt optimisation. LangMem-associated founding engineer; current affiliation disputed, researched 2026-10-27.

## Works with

- [Ankush Gola](https://www.anchorterminal.com/people/ankush-gola/), Co-founder
- [Harrison Chase](https://www.anchorterminal.com/people/harrison-chase/), Co-founder and CEO
- [John Kennedy](https://www.anchorterminal.com/people/john-kennedy/), LangChain security engineer; recent LangMem dependency-maintenance contributor

## Backed by

- [IVP](https://www.anchorterminal.com/investors/ivp/)
- [Benchmark](https://www.anchorterminal.com/investors/benchmark/)
- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)
- [Amplify Partners](https://www.anchorterminal.com/investors/amplify-partners/)
- [CapitalG](https://www.anchorterminal.com/investors/capitalg/)
- [Sapphire Ventures](https://www.anchorterminal.com/investors/sapphire-ventures/)
- [ServiceNow](https://www.anchorterminal.com/investors/servicenow/)
- [Workday](https://www.anchorterminal.com/investors/workday/)
- [Cisco Investments](https://www.anchorterminal.com/investors/cisco-investments/)
- [Datadog](https://www.anchorterminal.com/investors/datadog/)
- [Databricks](https://www.anchorterminal.com/investors/databricks/)
- [Frontline Ventures](https://www.anchorterminal.com/investors/frontline-ventures/)

## Questions

### Who is William Fu-Hinthorn?

William Fu-Hinthorn is langMem-associated founding engineer; current affiliation disputed.

### What does LangChain make?

Anchor Terminal lists LangMem from LangChain. LangMem is LangChain's open-source Python library for long-term agent memory. It extracts facts from conversations with an LLM, stores and searches them in a LangGraph store the owner runs, and includes two memory tools, message summarisation and prompt optimisation.

### Who has invested in LangChain?

The sources our research read name IVP, Benchmark, Sequoia Capital, Amplify Partners, CapitalG, Sapphire Ventures, ServiceNow, Workday, Cisco Investments, Datadog, Databricks and Frontline Ventures.

### How are William's tools graded?

LangMem is graded D, 48.3 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.langchain.com/about
- https://www.linkedin.com/in/harrison-chase-961287118/
- https://www.linkedin.com/in/ankush-gola-77255866/
- https://github.com/hinthornw
- https://pypi.org/project/langmem/
- https://x.com/WHinthorn
- https://github.com/langchain-ai/langmem/commits/main/
- https://github.com/jkennedyvz
- https://www.langchain.com/
- https://www.langchain.com
- https://support.langchain.com/
- https://www.langchain.com/support-plans
- https://github.com/langchain-ai/langmem

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

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