Braintrust, a San Francisco, CA–based technology company focused on AI observability, has raised $80 million in a Series B round.
Investors
The round was led by ICONIQ Capital, with participation from returning investors including Andreessen Horowitz, Greylock, Elad Gil, Basecase Capital, and others.
ICONIQ Capital is a U.S.–based global investment management and family office firm operating across wealth advisory, private equity, venture capital, real estate, and philanthropic services. The firm manages approximately $95.1 billion in assets and operates multiple divisions, including venture capital (ICONIQ Growth), private equity, real estate, and philanthropy (ICONIQ Impact).
Braintrust Use of Funds
The funding will expand engineering and go-to-market teams, expand its footprint to new offices, and develop new products.
About Braintrust
Founded by Ankur Goyal, Braintrust is an AI observability platform designed specifically for teams building and scaling AI products in production. It provides engineering and product teams with tools to monitor, understand, and ensure the reliability of AI models in production. The platform captures multi-step agent interactions and intermediate reasoning data. Headquartered in San Francisco, California, Braintrust’s solutions are used by major companies, including Notion, Replit, Cloudflare, Ramp, and Dropbox.
Funding Details
Company: Braintrust Data, Inc.
Raised: $80.0M
Round: Series B
Funding Date: February 2026
Lead Investor: ICONIQ Capital
Additional Investors: Andreessen Horowitz, Greylock, Elad Gil, Basecase Capital, and others
Company Website: https://www.braintrust.dev/
Software Category: AI Observability / Production AI Infrastructure
Source: https://www.braintrust.dev/blog/announcing-series-b