Subvocal Raises $1.3M for Glasses That Turn Silent Speech Into Text

Subvocal, a US startup from Y Combinator, has raised $1.3 million to build glasses that convert silent speech into text at more than 200 words per minute, according to the company. Co-founder Aarush Yadav announced the round on X on 30 October 2026. Investors are Y Combinator and Afore Capital.

Preorders are open in the United States only. The company asks for a $199 deposit against an early-bird price of $499, with deliveries estimated for the first quarter of 2027. Subvocal comes from Y Combinator's fall 2026 batch and was founded by Yadav, who studied at Georgia Tech, and Arnav Kumar.

How it is meant to work

The glasses resemble recent Meta Ray-Ban models. According to the preorder page, they need no camera. Instead, a contactless sensor tracks the muscles involved in inner speech and translates an almost invisible, silent mouth movement into text. For comparison, a good typist reaches roughly 40 to 60 words per minute, and normal conversation runs around 150.

Subvocal research is not new. In 2018, Arnav Kapur, then at the MIT Media Lab, presented AlterEgo, an electrode-based device placed on the jaw that recognized such signals with about 92% accuracy under controlled conditions. The project became a startup in 2025. Meta, meanwhile, relies on wrist electromyography with the Neural Band sold alongside its Ray-Ban Display glasses.

What remains unproven

Subvocal has not published a public demonstration. The 200 words per minute figure is an in-house number, with no error rate, no information on how long each user must train the system, and no detail on vocabulary size. Speed means little without accuracy: 200 words per minute with one wrong word in ten would be unusable.

Funding is another question. $1.3 million is modest for hardware and covers prototypes rather than a production line. Until independent tests or working units appear, the claims remain unverified, and buyers putting down a deposit are betting on the team's promise alone.