Rahul Chhabra Co-Founded Sabi Raises $50M in Seed Funding

Sabi, a San Francisco, CA-based provider of a non-invasive brain-AI interface designed for everyday wear, raised $50M in Seed funding.

The round was led by Khosla Ventures with participation from Accel, Initialized Capital, Kevin Weil, DST Global, Collaborative Fund, and Ascend.

The company will use the funding to expand its neural dataset, complete development of its custom chip, manufacture early devices, and grow its neuroscience, hardware, and machine-learning teams.

What is Sabi?

Sabi is building a wearable brain-computer interface that allows people to communicate with AI using neural signals rather than typing or speaking.

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Its first device looks like an ordinary baseball cap, with custom electroencephalography (EEG) sensors hidden inside. These sensors read neural signals through hair without requiring gel, surgery, or direct contact with the scalp.

The company aims to translate imagined speech, and user intent into commands for AI systems. Its technology is designed for everyday use rather than being limited to clinical settings or cursor control.

Sabi is also developing a Brain Foundation Model trained on more than 100,000 hours of labelled neural recordings. The model is intended to help interpret neural activity and convert it into commands.

How Much Funding Has Sabi Raised?

Sabi has raised $50 million in its latest seed funding round.

The round was led by Khosla Ventures, with participation from Accel, Initialized Capital, Kevin Weil, DST Global, Collaborative Fund, and Ascend.

The company has not disclosed details of previous funding rounds or its total funding raised before this investment.

Who Invested in Sabi’s Seed Round?

The $50 million seed round was led by Khosla Ventures.

Other participating investors include:

• Accel
• Initialized Capital
• Kevin Weil
• DST Global
• Collaborative Fund
• Ascend

Why the Funding Matters

Sabi will use the funding to expand its neural dataset, complete development of its custom chip, and manufacture its early devices.

The company also plans to expand its neuroscience, hardware, and machine-learning teams to support product development.

Another focus is making the interface suitable for everyday AI use. Sabi aims to provide a way for people to communicate with AI without relying on keyboards, touchscreens, or voice commands.

Who founded Sabi?

Sabi was co-founded by Rahul Chhabra. The source does not provide the company's founding year or headquarters beyond identifying it as a San Francisco-based startup.

The company is developing its brain-AI interface through work in neuroscience, hardware, and machine learning.

“AI can write, reason and act, yet we still communicate with it by tapping on keyboards and screens,” said Chhabra. “We are building a faster interface that does not require surgery or a laboratory. The goal is a cap people can wear in ordinary life and use when they intentionally want to communicate with AI.

Market and Business Growth

Sabi is entering the brain-computer interface market with a focus on non-invasive technology for everyday use.

Its first device integrates custom EEG sensors into a baseball cap, designed to read neural signals without surgery or gel. Its Brain Foundation Model has been trained on more than 100,000 hours of labelled neural recordings.

Unlike interfaces primarily designed for medical settings or cursor control, Sabi is developing its technology to translate imagined speech and intent into commands for AI.

The company is also building privacy controls that govern when the device records, which applications can receive commands, and which actions require user confirmation.

What Happens Next?

Sabi plans to expand its neural dataset, finish developing its custom chip, and manufacture early devices. It will also grow its neuroscience, hardware, and machine-learning teams.

The company will continue developing its non-invasive brain-AI interface, with a focus on translating neural signals into AI commands while protecting user privacy.

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