Custom silicon has long been a rich company’s game, with design projects that run for years and swallow tens of millions of dollars. Visibl Semiconductors wants to change that with AI agents that automate the heavy lifting of chip development, and Robinhood Ventures Fund II is betting on the approach.
Visibl, which signed a $250,000 SAFE with the fund on March 19, describes its technology as “AI agents for faster, lower-cost custom silicon.” Rather than staffing long design cycles with large hardware engineering teams, the company’s agents take on the repetitive and labor-intensive parts of the workflow, from architecture exploration to verification and implementation, compressing schedules and trimming the engineering bill that makes bespoke chips uneconomical. The startup is part of a wave of companies applying agentic AI to semiconductor design, a field where a single tape-out can cost millions and verification alone can consume half a project’s budget.
The timing matters. Data center operators, edge device makers and automotive suppliers increasingly want silicon tailored to their workloads instead of off-the-shelf parts, but traditional custom design runs can take years and cost tens of millions of dollars. If AI agents can shrink that timeline, a wider range of teams can afford chips designed around their exact needs, opening a bigger market for the custom silicon ecosystem. Big foundries and cloud giants are already pouring billions into design automation, and startups like Visibl are aiming at the same opportunity from the software side.
Visibl is one of roughly 80 companies in the Robinhood fund’s portfolio, a business development company slated to begin trading on the New York Stock Exchange on August 13 under the ticker RVII. The fund concentrates on Y Combinator-linked startups, investing through $250,000 SAFEs, and its public listing gives retail investors a way into early-stage chip software companies that would otherwise sit behind accredited-investor walls.
