Teenage AI Visionary: 19-Year-Old Founder Lands $10M for Cal AI Startup!

Zach Yadegari, the teenage co-founder behind the successful calorie tracking application Cal AI, has embarked on a new venture with the launch of Persona, an AI agent startup that has already secured an impressive $10 million in funding. The investment round was spearheaded by Vine Ventures, with additional participation from Z Fellows founder Cory Levy and Collective Global.

This new endeavor follows the acquisition of Cal AI by MyFitnessPal in March for an undisclosed sum. Cal AI had rapidly ascended in app store rankings, surpassing its older competitor and achieving over $30 million in annual revenue within two years. Initially, Yadegari and his co-founders joined MyFitnessPal to continue developing Cal AI, but Yadegari departed in June to dedicate himself to Persona.

Persona is conceived as a personal AI assistant, drawing parallels to existing agents like Instinct or Meta’s Muse, but distinguishes itself with a forthcoming hardware component: a $179 wearable band. This positions Persona somewhat akin to Bee, Amazon's wearable AI device, yet it differs in several critical aspects. Unlike ambient AI devices, Persona's band will not continuously listen or record. Users will activate the assistant via a physical button or a wrist flick, emphasizing user control and privacy.

Privacy is a cornerstone of Persona's design. The AI model operates in Persona’s secure cloud, meaning user data is not processed or stored directly on the device. Data transmitted to and from the cloud is encrypted, both in transit and at rest. Persona also allows users to delete their data, ensuring that conversations remain private and are never sold to advertisers or data brokers. The team is also implementing safeguards against common AI vulnerabilities such as phishing and prompt-injection attempts, and the agent is designed to prevent access to credit card details, with purchases requiring explicit user approval and handled by external secure providers like Stripe Link.

While user data is protected from advertisers, Persona's business model does incorporate ads. Yadegari clarifies that advertised products will be displayed during shopping research, but the agent's recommendations will remain unbiased. The agent will leverage user preferences to suggest matching items, some of which may be sponsored, without the agent itself knowing which are advertised.

The Persona bands are slated for release in December, complemented by a dedicated app currently under development. In the interim, Persona has launched as a free beta accessible via iMessage text messages, attracting thousands of beta users and already generating 'five figures' in preorder revenue. Similar to other consumer AI assistants, Persona offers a range of functionalities including ordering food or rides, note-taking, booking travel, and managing emails and questions.

Yadegari envisions a future where Persona evolves into a