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  "markdown": "Co-founder and CEO.\n\nGideon Mendels is co-founder and CEO of Comet, which launched in 2017 and makes Opik, an open-source platform for tracing and evaluating AI applications. He previously co-founded GroupWize, which trained and deployed NLP models on chat data, and worked on hate speech and deception detection at Columbia University and Google.\n\n- LinkedIn: https://www.linkedin.com/in/gideon-mendels/\n- X: https://x.com/gidim\n\n## What Gideon builds\n\n- [Opik API + MCP](https://www.anchorterminal.com/tools/opik.md), graded BB, 71.7/100, in Agent observability \u0026 evals. Opik is Comet's open-source platform for tracing, evaluating and optimising LLM apps and agents, under Apache-2.0. It runs self-hosted or on Comet's Opik Cloud, with a REST API, Python and TypeScript SDKs and a hosted MCP server. Co-founder and CEO, researched 2026-10-26.\n\n## Works with\n\n- [Jacques Verré](https://www.anchorterminal.com/people/jacques-verre/), Head of Product\n- [Nimrod Lahav](https://www.anchorterminal.com/people/nimrod-lahav/), Co-founder and CTO\n\n## Backed by\n\n- [Trilogy Equity Partners](https://www.anchorterminal.com/investors/trilogy-equity-partners/)\n- [Two Sigma Ventures](https://www.anchorterminal.com/investors/two-sigma-ventures/)\n- [Founders' Co-op](https://www.anchorterminal.com/investors/founders-co-op/)\n- [Scale Venture Partners](https://www.anchorterminal.com/investors/scale-venture-partners/)\n- [OpenView](https://www.anchorterminal.com/investors/openview/)\n\n## Questions\n\n### Who is Gideon Mendels?\n\nGideon Mendels is co-founder and CEO of Comet, which launched in 2017 and makes Opik, an open-source platform for tracing and evaluating AI applications. He previously co-founded GroupWize, which trained and deployed NLP models on chat data, and worked on hate speech and deception detection at Columbia University and Google.\n\n### What does Comet make?\n\nAnchor Terminal lists Opik API + MCP from Comet. Opik is Comet's open-source platform for tracing, evaluating and optimising LLM apps and agents, under Apache-2.0. It runs self-hosted or on Comet's Opik Cloud, with a REST API, Python and TypeScript SDKs and a hosted MCP server.\n\n### Who has invested in Comet?\n\nThe sources our research read name Trilogy Equity Partners, Two Sigma Ventures, Founders' Co-op, Scale Venture Partners and OpenView.\n\n### How are Gideon's tools graded?\n\nOpik API + MCP is graded BB, 71.7 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.comet.com/site/about-us/\n- https://www.comet.com/site/\n- https://www.comet.com/site/about-us/contact-us/\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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