Cecilia Ziniti’s started as a paralegal at Yahoo in the early 2000s, when Yahoo was competing with Google and the internet was still being shaped by questions about content moderation, trust and safety, and what it meant to serve millions of users.
She went to law school, then joined Morrison & Foerster, where she represented big brands like Apple. At Amazon, she was the founding lawyer on Alexa - she remembers getting excited about the first user review for a product that would eventually ship billions of devices. She eventually became general counsel at Replit, the developer platform used by millions of programmers.
It was at Replit, in early 2022, that things changed. Cecilia had access to a pre-ChatGPT version of GPT through a deal she herself had negotiated between Replit and OpenAI. She tried it on a legal question. The result gave her chills. Her boss at the time, Replit CEO Amjad Masad, eventually noticed her attention had shifted. He asked whether her head was still in it. It was not. She left Replit and founded GC AI a week later, alongside co-founder and CTO Bardia Pourvakil, a fellow Replit alumnus. The company has since raised $73 million in total funding, including a $60 million Series B led by Scale Venture Partners and Northzone. It now powers over 1,400 companies, from Zscaler to Liquid Death. Cecilia was recently named to Inc.’s 2026 Female Founders 500 list.
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Email: george@georgehannah.com
