# Lukas Biewald

> Lukas Biewald is co-founder of Weights & Biases (CoreWeave). W&B Weave on Anchor Terminal, with grades, an about and public profiles.

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- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-27

Co-founder, Weights & Biases (CoreWeave).

Lukas Biewald co-founded Weights & 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.

- LinkedIn: https://www.linkedin.com/in/lbiewald/

## What Lukas builds

- [W&B Weave](https://www.anchorterminal.com/tools/wandb-weave.md), graded B, 66.8/100, in Agent observability & evals. W&B 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 & Biases (CoreWeave), researched 2026-10-27.

## Works with

- [Chris Van Pelt](https://www.anchorterminal.com/people/chris-van-pelt/), Co-founder; CISO per LinkedIn
- [Phil Gurbacki](https://www.anchorterminal.com/people/phil-gurbacki/), VP of Product, Weights & Biases
- [Shawn Lewis](https://www.anchorterminal.com/people/shawn-lewis/), Co-founder, Weights & Biases (CoreWeave)

## Questions

### Who is Lukas Biewald?

Lukas Biewald co-founded Weights & 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.

### What does Weights & Biases (CoreWeave) make?

Anchor Terminal lists W&B Weave from Weights & Biases (CoreWeave). W&B 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.

### How are Lukas's tools graded?

W&B Weave is graded B, 66.8 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://wandb.ai/site/company/about-us/
- https://www.linkedin.com/in/phillipgurbacki/details/experience/
- https://www.linkedin.com/in/phillipgurbacki
- https://www.linkedin.com/in/chrisvanpelt/details/experience/
- https://www.linkedin.com/in/chrisvanpelt
- https://www.linkedin.com/in/lbiewald/details/experience/
- https://www.linkedin.com/in/shawn-lewis-asdzxc524a563/details/experience/
- https://wandb.ai/site
- https://wandb.ai/site/support/
- https://wandb.ai/site/contact
- https://wandb.ai/site/support

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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