# Joshua Gross (slim)

> Joshua Gross is original Tinker builder; now Director at Muse Product Post-Training at Meta. Tinker on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/joshua-gross/index.md (~900 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/people/joshua-gross/index.json · canonical https://www.anchorterminal.com/people/joshua-gross/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Original Tinker builder; now Director, Muse Product Post-Training at Meta.

- LinkedIn: https://www.linkedin.com/in/joshgross

## What Joshua builds

- [Tinker](https://www.anchorterminal.com/tools/tinker.md), graded D, 51.2/100, in Fine-tuning. Thinking Machines Lab's API for model training. Original Tinker builder; now Director, Muse Product Post-Training at Meta, researched 2026-10-27.

## Works with

- [John Schulman](https://www.anchorterminal.com/people/john-schulman-2/), Co-founder and Chief Scientist; Tinker research/hiring involvement
- [Mira Murati](https://www.anchorterminal.com/people/mira-murati/), Co-founder and CEO

## Backed by

- [Andreessen Horowitz](https://www.anchorterminal.com/investors/andreessen-horowitz/)
- [NVIDIA](https://www.anchorterminal.com/investors/nvidia/)
- [Accel](https://www.anchorterminal.com/investors/accel/)
- [ServiceNow](https://www.anchorterminal.com/investors/servicenow/)
- [Cisco Investments](https://www.anchorterminal.com/investors/cisco-investments/)
- [AMD](https://www.anchorterminal.com/investors/amd/)
- [Jane Street](https://www.anchorterminal.com/investors/jane-street/)

## Questions

### Who is Joshua Gross?

Joshua Gross is original Tinker builder; now Director at Muse Product Post-Training at Meta.

### What does Thinking Machines Lab make?

Anchor Terminal lists Tinker from Thinking Machines Lab.

### Who has invested in Thinking Machines Lab?

The sources our research read name Andreessen Horowitz, NVIDIA, Accel, ServiceNow, Cisco Investments, AMD and Jane Street.

### How are Joshua's tools graded?

Tinker is graded D, 51.2 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://thinkingmachines.ai/news/nvidia-partnership/
- https://thinkingmachines.ai/news/inkling-small/
- https://x.com/miramurati
- https://joschu.net
- https://x.com/search?q=from%3Ajohnschulman2%20Tinker&src=typed_query
- https://x.com/johnschulman2
- https://www.linkedin.com/posts/joshgross_software-engineer-product-activity-7379658412789448704-qys9
- https://www.google.com/search?q=%22Tinker%22+%22Joshua+Gross%22
- https://www.linkedin.com/in/joshgross
- https://thinkingmachines.ai/
- https://thinkingmachines.ai/tinker/
- https://x.com/tinkerapi
- https://tinker-docs.thinkingmachines.ai/support/

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.