Bespoke Labs

Summary active Updated Jul 6, 2026

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Location Mountain View, California
Founded 2024
Latest Stage Series A
Total Raised $40M
Website https://bespokelabs.ai
Sector
ai machine-learning reinforcement-learning developer-tools ai-agents data-curation ai-infrastructure

Investors

8VC seed (2024)
Mayfield Fund series-a (2026)

Founders

Alex Dimakis Co-Founder
Mahesh Sathiamoorthy Co-Founder

About

Bespoke Labs is a Mountain View–based AI research company that builds reinforcement-learning environments and data-curation tooling for training reliable AI agents 12. Its simulated environments replicate real enterprise workspaces — codebases, Slack chatrooms, emails, and system logs — so agents can learn to execute complex, long-horizon workflows before being deployed inside real companies 12. The company was founded in 2024 by Alex Dimakis and Mahesh Sathiamoorthy 13.

Disclaimer: This is a lean profile built from initial round coverage and may be expanded as more information becomes available.

Funding History

Date Round Amount Lead Co-investors
2026-07-06 Seed + Series A (combined announcement) $40M ($31.75M Series A + $8.25M Seed) Wing Venture Capital (Series A), 8VC (Seed) Mayfield, The House Fund, Jeff Dean, Tristan Handy, Dheeraj Pandey, Spiros Xanthos, Tasso Argyros, angels from Anthropic/OpenAI/Meta 123456

What Investors Say

No independently sourced investor commentary beyond the announcement available at this time.

What Founders Say

In a company statement accompanying the announcement, the team said they had been “heads-down doing world-class data curation research and shipping best-in-class reinforcement learning environments” over the previous two years and said the new capital would let them “deepen both efforts” 3.

Sources

  1. VentureBurn, “Bespoke Labs Raises $40M in Funding To Train Reliable Agents,” July 6, 2026. Accessed July 2026. https://ventureburn.com/bespoke-labs-raises-40m-ai-agent-training/↩↩↩↩

  2. Digg (Fortune Term Sheet reprint), “Bespoke Labs raises $40M for AI agent training,” July 6, 2026. Accessed July 2026. https://digg.com/tech/keymoeqf↩↩↩

  3. Bespoke Labs company announcement on LinkedIn, July 6, 2026. Accessed July 2026. https://www.linkedin.com/company/bespokelabsai↩↩↩

  4. Axios Pro Rata deal listing, July 6, 2026. Accessed July 2026. https://www.axios.com/newsletters/axios-pro-rata↩

  5. SiliconANGLE, “AI post-training startup Bespoke Labs raises $40M in funding,” July 6, 2026. Accessed July 2026. https://siliconangle.com/2026/07/06/ai-post-training-startup-bespoke-labs-raises-40m-funding/ — Contemporaneous tier-1 tech press: $40M total = $31.75M Series A led by Wing VC (Mayfield, The House Fund, Anthropic employees participated) + $8.25M Seed led by consortium including Jeff Dean. ↩

  6. The SaaS News, “Bespoke Labs Raises $40M Series A,” July 6, 2026. Accessed July 2026. https://www.thesaasnews.com/news/bespoke-labs-raises-40m-series-a/ — Independent third-party confirmation: Series A led by Wing VC (Mayfield, The House Fund, Tristan Handy, angels from Anthropic/OpenAI/Meta participated); Seed led by 8VC (Jeff Dean, Spiros Xanthos, Dheeraj Pandey participated). ↩