JustAI (formerly Just Words, legally Choice AI Inc.) is a San Francisco AI-native marketing platform that turns lifecycle content into an always-on experimentation engine. Its AI agents - strategy, creative, decisioning and data - predict high-value moments, generate on-brand message variants across email, SMS and push, test them against real users, and shift traffic to the winners while compounding learnings across campaigns. Founded in 2024 by Neha Mittal (ex-Twitter and Pinterest growth lead) and Jeff Hara, the company graduated from Y Combinator's Winter 2024 batch and works with consumer brands including Grammarly, ClickUp, Notion, Lemonade, Coursera and Thumbtack.
Tofu is an AI-powered, omnichannel marketing platform for B2B go-to-market teams. It consolidates the sprawling martech stack into one workspace, generating and repurposing hyper-personalized content across channels so enterprise marketers can launch integrated campaigns roughly 8x faster. Founded in 2023 and based in San Mateo, California, Tofu plugs into existing tools like HubSpot and Salesforce rather than replacing them.
Bluefish is a New York-based agentic marketing platform (AMP) that helps Fortune 500 brands monitor, influence, and measure how they appear inside AI systems like ChatGPT, Google Gemini, Claude, Perplexity, and Amazon Rufus. Founded in 2024 by repeat ad-tech founders, it pioneered the category often called Generative Engine Optimization (GEO) and reached roughly 10% of the Fortune 500 within two years, raising $43M in Series B in April 2026 to bring total funding to $68M.