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  "markdown": "Founder, Meta.\n\nMark Zuckerberg is founder, chairman and CEO of Meta, which he started as Facebook in 2004, and sets the company's overall direction and product strategy. He is also co-founder and co-CEO of the Chan Zuckerberg Initiative. He studied computer science at Harvard University.\n\n## What Mark builds\n\n- [Llama Guard 4](https://www.anchorterminal.com/tools/llama-guard.md), graded D, 49.5/100, in Guardrails \u0026 safety filters. Llama Guard 4 is Meta's 12-billion-parameter open-weight safety classifier for text and images. It labels a prompt or a model response safe or unsafe against 14 hazard categories, and the owner runs it on a GPU. Founder, Meta, researched 2026-10-27.\n\n## Works with\n\n- [Abraham Montilla](https://www.anchorterminal.com/people/abraham-montilla/), Llama Guard 4 release/model-card contributor (GitHub amontilla0)\n- [Connor Treacy](https://www.anchorterminal.com/people/connor-treacy/), Meta Product Manager; Meta Model API launch-guide co-author\n- [Josh Walters](https://www.anchorterminal.com/people/josh-walters/), Developer marketing; Meta Model API launch-guide co-author\n- [Joshua Saxe](https://www.anchorterminal.com/people/joshua-saxe/), LlamaFirewall research coauthor; former Meta security AI leader\n- [Mahesh Pasupuleti](https://www.anchorterminal.com/people/mahesh-pasupuleti/), Senior Engineering Leader, Meta Superintelligence Labs, AI Safety and Alignment; led Llama Guard development\n- [Sahana Chennabasappa](https://www.anchorterminal.com/people/sahana-chennabasappa/), AI Security Engineer; LlamaFirewall paper first-listed author\n- [Tatiana Shavrina](https://www.anchorterminal.com/people/tatiana-shavrina/), AI/ML Research Lead; Muse Glimmer research team\n\n## Questions\n\n### Who is Mark Zuckerberg?\n\nMark Zuckerberg is founder, chairman and CEO of Meta, which he started as Facebook in 2004, and sets the company's overall direction and product strategy. He is also co-founder and co-CEO of the Chan Zuckerberg Initiative. He studied computer science at Harvard University.\n\n### What does Meta make?\n\nAnchor Terminal lists Llama Guard 4 from Meta. Llama Guard 4 is Meta's 12-billion-parameter open-weight safety classifier for text and images. It labels a prompt or a model response safe or unsafe against 14 hazard categories, and the owner runs it on a GPU.\n\n### How are Mark's tools graded?\n\nLlama Guard 4 is graded D, 49.5 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.google.com/search?q=%22Llama+Guard%22+%22Meta%22+%22led+development%22\n- https://www.linkedin.com/in/maheshp9\n- https://github.com/meta-llama/PurpleLlama/blob/main/Llama-Guard4/12B/MODEL_CARD.md\n- https://github.com/meta-llama/PurpleLlama/commit/cd9fe65792343c285730c967f888a7373d7e6c17\n- https://github.com/amontilla0\n- https://www.meta.com/en-gb/about/leadership/mark-zuckerberg/\n- https://dev.meta.ai/\n- https://www.google.com/search?q=Meta+company+LinkedIn\n- https://dev.meta.ai/llama/docs/community-support-and-resources/\n- https://github.com/meta-llama/PurpleLlama\n- https://dev.meta.ai/llama/docs/model-cards-and-prompt-formats/llama-guard-4/\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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