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  "markdown": "Co-founder, Weights \u0026 Biases (CoreWeave).\n\nLukas Biewald co-founded Weights \u0026 Biases in 2017 with Chris Van Pelt and Shawn Lewis, led it as CEO until CoreWeave bought it in 2025, and is now its general manager. He earlier co-founded Figure Eight, formerly CrowdFlower, which Appen bought in 2019, and worked on search at Yahoo and Powerset.\n\n- LinkedIn: https://www.linkedin.com/in/lbiewald/\n\n## What Lukas builds\n\n- [W\u0026B Weave](https://www.anchorterminal.com/tools/wandb-weave.md), graded B, 66.8/100, in Agent observability \u0026 evals. W\u0026B Weave is CoreWeave Forge's tracing and evaluation service for LLM applications and agents. It takes traces from Python and TypeScript SDKs or an OTLP endpoint and exposes them through a REST Service API. Co-founder, Weights \u0026 Biases (CoreWeave), researched 2026-10-27.\n\n## Works with\n\n- [Chris Van Pelt](https://www.anchorterminal.com/people/chris-van-pelt/), Co-founder; CISO per LinkedIn\n- [Phil Gurbacki](https://www.anchorterminal.com/people/phil-gurbacki/), VP of Product, Weights \u0026 Biases\n- [Shawn Lewis](https://www.anchorterminal.com/people/shawn-lewis/), Co-founder, Weights \u0026 Biases (CoreWeave)\n\n## Questions\n\n### Who is Lukas Biewald?\n\nLukas Biewald co-founded Weights \u0026 Biases in 2017 with Chris Van Pelt and Shawn Lewis, led it as CEO until CoreWeave bought it in 2025, and is now its general manager. He earlier co-founded Figure Eight, formerly CrowdFlower, which Appen bought in 2019, and worked on search at Yahoo and Powerset.\n\n### What does Weights \u0026 Biases (CoreWeave) make?\n\nAnchor Terminal lists W\u0026B Weave from Weights \u0026 Biases (CoreWeave). W\u0026B Weave is CoreWeave Forge's tracing and evaluation service for LLM applications and agents. It takes traces from Python and TypeScript SDKs or an OTLP endpoint and exposes them through a REST Service API.\n\n### How are Lukas's tools graded?\n\nW\u0026B Weave is graded B, 66.8 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://wandb.ai/site/company/about-us/\n- https://www.linkedin.com/in/phillipgurbacki/details/experience/\n- https://www.linkedin.com/in/phillipgurbacki\n- https://www.linkedin.com/in/chrisvanpelt/details/experience/\n- https://www.linkedin.com/in/chrisvanpelt\n- https://www.linkedin.com/in/lbiewald/details/experience/\n- https://www.linkedin.com/in/shawn-lewis-asdzxc524a563/details/experience/\n- https://wandb.ai/site\n- https://wandb.ai/site/support/\n- https://wandb.ai/site/contact\n- https://wandb.ai/site/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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