Company intelligence
As of July 6, 2026, Bespoke Labs has raised at least $40M in equity across 1 sourced funding round.
Bespoke Labs builds reinforcement learning environments and infrastructure — realistic company-like simulations with codebases, tickets, Slack, and logs — to train and evaluate reliable, long-horizon AI agents.
Bespoke Labs builds reinforcement learning environments and infrastructure that frontier AI labs and enterprises use to train, evaluate and improve long-horizon AI agents.[1] Mahesh Sathiamoorthy and Alex Dimakis founded the company in 2024.[1] Dimakis is chief science officer.[1] It is based in Mountain View, California.[1] The team numbered roughly 40 people in July 2026.[2],[1] Bespoke is a core contributor to Terminal-Bench, a benchmark for agentic capability.[1] It is also the team behind OpenThoughts, an open reasoning dataset downloaded more than 500,000 times and used by Thinking Machines Lab, Meta and Amazon.[1] The company said it will use the capital for research, hiring and business development.[1]
Customers also use its GEPA optimizer, which automates prompt and policy search for agents.[1]
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Bespoke Labs is an AI infra company, based in Mountain View, California, USA, founded 2024.
| Date | Round | Amount | Valuation | Lead investors | Source |
|---|---|---|---|---|---|
| Jul 6, 2026 | Seed + Series A | $40M | — | Wing Venture Capitalunverified | Business WirePulse story |
Equity only. “Equity raised” above sums the rounds with a dated, linked source; rumored rounds, tender offers and secondary sales are listed but not counted, and debt financing is listed separately.
Sathiamoorthy is CEO.[1]
Bespoke Labs is based in Mountain View, California.[1]
Bespoke Labs builds reinforcement learning environments and infrastructure that frontier AI labs and enterprises use to train, evaluate and improve long-horizon AI agents.[1]
Bespoke Labs has raised at least $40M in equity across 1 sourced funding round tracked by Value Add VC. The most recent was a $40M Seed + Series A in July 2026, reported by Business Wire. Debt financing, tender offers and secondary sales are not counted.
Lead investors in Bespoke Labs's sourced funding rounds include Wing Venture Capital. Per round: its July 2026 Seed + Series A was led by Wing Venture Capital.
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.
