Arda, the AI startup led by former OpenAI research chief Bob McGrew, has raised $230 million at a $1.5 billion valuation. Altimeter Capital, Accel, and Khosla Ventures led the round.
The company builds AI software that automates manufacturing workflows. Its models are already deployed at Anduril, a military technology firm, and are aimed at compressing the time it takes to retool production lines for new designs.
That time-to-retool is Arda's core thesis. McGrew explained the bottleneck: retraining a human engineer for a design change takes a day; reconfiguring automation for weapons or drone production can stretch to three to six months. Arda's software acts as an AI agent for manufacturing engineers, functioning similarly to code assistants like Cursor for programmers. The company blends proprietary models with open-source and frontier models to power the product.
McGrew co-founded Arda with Augustus Odena, a former co-founder of Adept and veteran engineer at Google and Meta. Alex Mark and Jakob Frick, both ex-Palantir engineers, also co-founded the startup.
McGrew departed OpenAI in 2024 after joining in 2017 to work on reasoning capabilities. He remained through Sam Altman's brief removal from the CEO post in November 2023, staying to ship OpenAI's reasoning product, which he viewed as a final breakthrough toward artificial general intelligence. After that milestone, he said, he felt ready to start a company.
Apoorv Agrawal of Altimeter Capital, who led this round and previously worked with McGrew at Palantir, framed the opportunity in market-size terms: manufacturing is a $16 trillion global industry, with the U.S. market representing $3 trillion. Agrawal acknowledged the $1.5 billion valuation as steep but argued the long-term upside justifies it if Arda captures even a fractional share of market spending and helps reshore production to the U.S.
Arda plans to expand into robotics to deepen factory automation.
