# John Schulman

> John Schulman is co-founder and Chief Scientist; Tinker research/hiring involvement. Tinker on Anchor Terminal, with grades, an about and public profiles.

- Canonical: https://www.anchorterminal.com/people/john-schulman-2/
- Markdown: https://www.anchorterminal.com/people/john-schulman-2/index.md (~1,050 tokens)
- Slim: https://www.anchorterminal.com/people/john-schulman-2/index.min.md (~880 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/people/john-schulman-2/index.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

Co-founder and Chief Scientist; Tinker research/hiring involvement.

John Schulman is chief scientist at Thinking Machines Lab, which he joined in February 2025. He co-founded OpenAI in 2015 and led the reinforcement learning team that created ChatGPT, drawing on his work on Trust Region Policy Optimization and proximal policy optimization. He spent a few months at Anthropic in between.

- X: https://x.com/johnschulman2

## What John 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. Co-founder and Chief Scientist; Tinker research/hiring involvement, researched 2026-10-27.

## Works with

- [Joshua Gross](https://www.anchorterminal.com/people/joshua-gross/), Original Tinker builder; now Director, Muse Product Post-Training at Meta
- [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 John Schulman?

John Schulman is chief scientist at Thinking Machines Lab, which he joined in February 2025. He co-founded OpenAI in 2015 and led the reinforcement learning team that created ChatGPT, drawing on his work on Trust Region Policy Optimization and proximal policy optimization. He spent a few months at Anthropic in between.

### What does Thinking Machines Lab make?

Anchor Terminal lists Tinker from Thinking Machines Lab. Thinking Machines Lab's API for model training.

### 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 John'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/

Not the same person as [John Schulman](https://www.anchorterminal.com/people/john-schulman/) (OpenAI and Stripe, OpenAI), as far as the research can tell.

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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