Chris Van Pelt
Co-founder and Distinguished Engineer of Weights & Biases, the machine learning developer platform
- Distinguished Engineer and Cofounder, Weights & Biases13
Chris Van Pelt is a co-founder of Weights & Biases and is listed on its leadership page as Distinguished Engineer and Cofounder. Weights & Biases was founded in 2017 by Lukas Biewald, Van Pelt and Shawn Lewis, began with an experiment tracking tool developed to help build models at OpenAI, and was acquired by CoreWeave in May 2025.1
Career
Van Pelt co-founded Weights & Biases with Lukas Biewald and Shawn Lewis in 2017. In a June 2019 post marking the product's public launch, Biewald called Van Pelt a longtime co-founder and described six months of building the tool together with Lewis and early users.12
Weights & Biases started from an experiment tracking tool built to help develop models at OpenAI and grew into a broader platform for machine learning practitioners. CoreWeave acquired the company in May 2025, and its leadership page lists Van Pelt as Distinguished Engineer and Cofounder; Van Pelt's GitHub profile gives wandb.com as Van Pelt's organization.13
Work
Weights & Biases (external site: wandb.ai)Proprietary product
Co-founded the company in 2017 with Lukas Biewald and Shawn Lewis; Biewald's 2019 launch post describes building the first version of the tool with Van Pelt, Lewis and early users including OpenAI, Toyota Research and Uber.12
Career timeline
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