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  "markdown": "Original Tinker builder; now Director, Muse Product Post-Training at Meta.\n\n- LinkedIn: https://www.linkedin.com/in/joshgross\n\n## What Joshua builds\n\n- [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.\n\n## Works with\n\n- [John Schulman](https://www.anchorterminal.com/people/john-schulman-2/), Co-founder and Chief Scientist; Tinker research/hiring involvement\n- [Mira Murati](https://www.anchorterminal.com/people/mira-murati/), Co-founder and CEO\n\n## Backed by\n\n- [Andreessen Horowitz](https://www.anchorterminal.com/investors/andreessen-horowitz/)\n- [NVIDIA](https://www.anchorterminal.com/investors/nvidia/)\n- [Accel](https://www.anchorterminal.com/investors/accel/)\n- [ServiceNow](https://www.anchorterminal.com/investors/servicenow/)\n- [Cisco Investments](https://www.anchorterminal.com/investors/cisco-investments/)\n- [AMD](https://www.anchorterminal.com/investors/amd/)\n- [Jane Street](https://www.anchorterminal.com/investors/jane-street/)\n\n## Questions\n\n### Who is Joshua Gross?\n\nJoshua Gross is original Tinker builder; now Director at Muse Product Post-Training at Meta.\n\n### What does Thinking Machines Lab make?\n\nAnchor Terminal lists Tinker from Thinking Machines Lab. Thinking Machines Lab's API for model training.\n\n### Who has invested in Thinking Machines Lab?\n\nThe sources our research read name Andreessen Horowitz, NVIDIA, Accel, ServiceNow, Cisco Investments, AMD and Jane Street.\n\n### How are Joshua's tools graded?\n\nTinker is graded D, 51.2 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://thinkingmachines.ai/news/nvidia-partnership/\n- https://thinkingmachines.ai/news/inkling-small/\n- https://x.com/miramurati\n- https://joschu.net\n- https://x.com/search?q=from%3Ajohnschulman2%20Tinker\u0026src=typed_query\n- https://x.com/johnschulman2\n- https://www.linkedin.com/posts/joshgross_software-engineer-product-activity-7379658412789448704-qys9\n- https://www.google.com/search?q=%22Tinker%22+%22Joshua+Gross%22\n- https://www.linkedin.com/in/joshgross\n- https://thinkingmachines.ai/\n- https://thinkingmachines.ai/tinker/\n- https://x.com/tinkerapi\n- https://tinker-docs.thinkingmachines.ai/support/\n\nThese 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.\n",
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