Bespoke Labs Raises $40M in Funding Led by Wing VC

The round also saw participation from Mayfield, The House Fund, dbt Labs CEO Tristan Handy, and other angels from Anthropic, OpenAI, and Meta, as well as a Seed led by 8VC, with participation from Jeff Dean, Resolve AI CEO Spiros Xanthos, DevRev CEO Dheeraj Pandey, and others.

The company plans to use the funding to grow its research team, expand its environment-building infrastructure, and speed up business growth.

Today's AI agents are powerful, but they are still not fully reliable. They can write code, answer questions, and handle short tasks, but they often struggle to work independently on complex tasks that take hours or even days, like a human coworker. To improve, they need realistic environments where they can practice, learn, and be tested.

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Research from METR shows that the amount of work AI agents can reliably complete has been doubling about every seven months. To keep that progress going, AI needs training environments that become more complex over time. Bespoke Labs was created to build those environments and help AI agents continue improving.

Bespoke Labs builds the environments and tools that help make AI agents more reliable. The company creates realistic workplace settings with large codebases, microservices, logs, support tickets, emails, Slack messages, and other business tools. These environments allow AI agents to practice handling long and complex tasks, helping them learn skills that are useful in real-world business operations.

“As frontier labs and AI-native enterprises push the boundaries of long horizon agentic capabilities, a new generation of data and training infrastructure is required,” said Peter Wagner, Founding Partner of Wing Venture Capital. “Mahesh and Alex deeply understand the needs of leading AI researchers, and are building Bespoke Labs on a unique research-driven foundation to help advance and scale the state of the art.”

“We work with labs on research programs spanning reinforcement learning, environment curation, benchmarking, and long‑horizon modeling so that environments keep pace with the frontier of agent capabilities,” said Alex Dimakis, co-founder and Chief Science Officer of Bespoke Labs. “I’m proud that we are a research lab pushing the frontier on environment infrastructure and curation.”

“Frontier labs, enterprises, and all organizations relying on reliable agents need access to high-quality environments,” said Mahesh Sathiamoorthy, co-founder and CEO of Bespoke Labs. “This is the critical piece needed to optimize and develop agents. That's why we are focused on doing research around environments, building the infrastructure around environments, and building the environments themselves.”

About Bespoke Labs

Founded in 2024 by Mahesh Sathiamoorthy and Alex Dimakis, Bespoke Labs is a research company focused on making AI agents more reliable. It develops the environments and infrastructure that help AI companies and businesses train, test, and improve AI agents for real-world use. The company also supports open AI research and contributes to projects such as OpenThoughts, Terminal Bench and GEPA.

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