Cal AI Co-Founder Zach Yadegari Raises $10 Million for New AI Startup Persona
Zach Yadegari, the 19-year-old co-founder of calorie-tracking app Cal AI, has raised $10 million for his new startup, Persona, which is developing a personal AI assistant designed to simplify everyday tasks. The funding round was led by Vine Ventures, with Z Fellows founder Cory Levy and Collective Global also participating, according to October 8 reporting by TechCrunch.
Persona aims to bring multiple digital activities into a single assistant that can help users manage tasks such as booking travel, answering emails, taking notes and ordering food or rides. The company is developing both a messaging-based assistant and a wearable device intended to make interacting with AI less dependent on a smartphone screen.
From Cal AI to a New AI Venture
Yadegari previously co-founded Cal AI, a calorie-tracking app that gained popularity by allowing users to estimate the nutritional content of meals using photographs. MyFitnessPal acquired the company in March 2026 for an undisclosed amount.
TechCrunch reported that Cal AI generated more than $30 million in annual revenue in less than two years, citing information provided by MyFitnessPal. Yadegari initially continued working on the app following the acquisition but left the company in June to pursue his next venture.
Persona represents his move from a focused consumer health application to a broader personal AI assistant. The startup is entering a competitive market where established technology companies and emerging businesses are developing AI agents that can manage tasks across different digital services.
Persona Combines Messaging and Wearable AI
Persona's assistant is available through a free beta on iMessage, allowing users to interact with it through text. Yadegari told TechCrunch that the beta had attracted a few thousand users.
The company is also developing a wearable band priced at $179, with availability expected in December 2026. Unlike devices designed to listen continuously, the band is intended to activate through a button or a wrist movement, according to Yadegari. The company says the device will connect users to its cloud-based AI system rather than run the model locally.
The funding is expected to support computing costs, hiring, product development and manufacturing. Persona has also reported five-figure revenue from wearable preorders, although the company is still in the early stages of building its customer base.
Funding Comes as AI Assistants Face Growing Competition
Persona enters a crowded market that includes AI assistants from major technology companies and startups experimenting with wearable hardware. Its challenge will be to make the assistant useful and reliable across different tasks while building user trust around privacy and data handling.
Yadegari has said Persona is designed with privacy in mind, including encryption for data in transit and at rest. Those protections remain company-stated commitments rather than independently verified assessments of the product.
The $10 million funding round gives Persona resources to develop its assistant and prepare its wearable device. Its longer-term prospects will depend on whether it can deliver a compelling user experience and stand out in an increasingly competitive AI assistant market.
