Marissa Mayer Shuts Down Sunshine for New AI Venture Dazzle
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Marissa Mayer Shuts Down Sunshine for New AI Venture Dazzle

The former Yahoo CEO has raised an $8 million seed round for her new AI personal assistant startup.

12/25/2025
Othmane Taki
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Former Yahoo CEO Marissa Mayer is returning to the forefront of tech innovation with her new venture, Dazzle. After shuttering her previous startup, Sunshine, Mayer has launched an AI-focused company to develop next-generation personal assistants. The new enterprise has already secured an impressive $8 million in seed funding at a $35 million valuation, signaling strong investor confidence.


A Strategic Pivot to Artificial Intelligence

The transition to Dazzle represents a decisive shift from Sunshine, a company focused on photo-sharing and contact management. Mayer revealed her team began prototyping the AI concept last summer, and the project's ambition quickly overshadowed their existing work. She noted the team was 'much more excited about' Dazzle, believing it holds potential for a 'much bigger impact' than Sunshine's offerings.

Securing High-Profile Investor Confidence

Dazzle's $8 million seed round was notably led by Kirsten Green of Forerunner Ventures, a significant endorsement for the company. Green is renowned for identifying successful consumer brands like Warby Parker and Chime, and her investment suggests a strong belief in Dazzle's market potential. Other prominent participants include Kleiner Perkins, Greycroft, and Slow Ventures, with Mayer also contributing her own capital.

The backing from Forerunner Ventures is particularly strategic, as the firm anticipates a breakout moment for consumer-facing AI. While enterprise AI has dominated the recent tech cycle, Green believes the consumer sector is a 'late bloomer' poised for growth. Mayer praised Green's foresight, stating, 'I think she really has a great sense for where people and platforms are going,' underscoring the partnership's value.

Lessons from a Previous Chapter

The launch of Dazzle follows the closure of Sunshine, which Mayer founded as Lumi Labs in 2018 after raising $20 million. The startup's primary product, a contact management app, struggled to gain traction amid privacy concerns and was later criticized for its design. Mayer candidly admitted that the problems Sunshine aimed to solve were ultimately too 'mundane' and lacked the scale she desired.

Despite Sunshine's limited success, its investors have been brought into the new venture, receiving a 10% equity stake in Dazzle. This move acknowledges their prior support while aligning their interests with the new, more ambitious direction. Mayer reflected that the product never achieved the 'state of overall polish and accessibility' she had envisioned, a key lesson she carries forward.

An Ambition for Transformative Impact

Mayer is leveraging her extensive experience from her formative years at Google, where she was employee number 20 and instrumental in shaping products like Search and Maps. Her tenure as CEO of Yahoo further solidified her reputation as a major figure in the tech industry. She draws on this legacy as she sets a high bar for what Dazzle aims to accomplish in the competitive AI space.

Her goal is to create a product with the same revolutionary influence as her past successes at Google and Yahoo. 'I really aspire to build a product that has that kind of impact again,' Mayer stated, referencing how those companies fundamentally changed user behavior. This ambition positions Dazzle as Mayer's determined effort to once again shape the future of technology.


With Dazzle, Marissa Mayer is re-entering Silicon Valley's high-stakes arena with a renewed focus and substantial backing from top-tier investors. By learning from the challenges of Sunshine and channeling the ambition from her time at Google and Yahoo, she is betting on AI to deliver her next transformative product. The tech world will be watching as Dazzle prepares to emerge from stealth mode early next year.

Source: TechCrunch