Bespoke Labs has raised $40 million across its seed and Series A rounds, with the Series A led by Wing VC and participation from Mayfield, The House Fund, 8VC, and AI leaders from Anthropic, OpenAI and Meta.

The company develops realistic enterprise environments where agents learn long-horizon tasks before deployment.

As enterprises race to deploy autonomous AI, investors are increasingly backing the infrastructure that trains and evaluates AI agents.

The engineers building some of the industry’s most closely watched AI models are personally backing a 40-person startup that does something almost the opposite of their day jobs: making agents fail, safely, over and over again.

That startup is Bespoke Labs, and it announced on July 6, 2026, that it had raised $40 million across a seed and Series A round. The Series A was led by Wing VC, with participation from Mayfield, The House Fund, Tristan Handy, dbt Labs’ chief executive, and individual angel investors who work at Anthropic, OpenAI, and Meta.