Tofu

Tofu Technologies, Inc. develops an AI platform for business-to-business go-to-market teams that generates personalized campaign content and executes campaigns through the customer's existing marketing and sales systems. The platform covers outbound prospecting, lead nurture, event follow-up, sales acceleration, re-engagement of closed-lost or stalled deals, and expansion into existing pipeline, producing assets such as email sequences, landing pages, LinkedIn and display ads, re-engagement emails and call scripts.

The product is organized around three agents. A Research agent combines first-party CRM data (deal stage and seller notes, downloaded assets and product usage, closed-lost reasons and form fills) with third-party firmographic, technographic, intent and hiring signals drawn from more than 75 sources. A Create agent uses that context to produce assets matched to account, persona and funnel stage. A Launch agent sequences emails, stages leads, fires campaigns and updates records inside connected tools including HubSpot, Marketo, Salesforce and Outreach. An earlier described mechanism, the Playbook or AI knowledge graph, is built by ingesting a customer's website and marketing materials to capture company and brand information, target segments and personas, and reusable assets, so generated content stays on brand with limited human editing.

Founding story

Tofu was founded in 2023 by Eunjoon (EJ) Cho, Elaine Zelby and Honglei Liu. Zelby had built and led marketing teams at Slack, Consensys and Capriza; Liu held machine learning leadership roles at Twitter, Affirm and Facebook; Cho worked on AI throughout his career, beginning at Google where he trained language models, and encountered marketing pain points while working on an earlier startup between roles at Google and Facebook. Before launching, the team spoke with more than 100 enterprise CMOs, many of whom managed teams producing thousands of content pieces while using as many as 30 tools. The name derives from "top of funnel" (ToFu), the stage at which marketing teams rely most heavily on the tools Tofu aims to replace.

Business model

Tofu sells its platform to companies' marketing and go-to-market teams, with a demo-led onboarding process and a free trial delivered as a customized instance of the product tailored to the prospect's company.

Traction

At the 2023 seed announcement the company was in beta with enterprise customers and reported more than 300 qualified leads in its pipeline. By the April 2026 Series A announcement, the company reported 12x revenue growth and a 36x increase in content generated over the prior year, with adoption spanning startups to enterprises including Check Point, RingCentral and Bluecore, where the company says hundreds of marketers use the product daily.

Latest developments

In April 2026 Tofu announced a $12 million Series A led by SignalFire, with new investors including HubSpot Ventures, Tau Ventures, Correlation Ventures, Alumni Ventures, SH Fund, Riverside Ventures, Eudemian Ventures and Han Bridge Capital, and participation from existing backers Index Ventures, Stage 2 Capital and Liquid 2 Ventures. The company said it would use the capital to scale its team, expand product capabilities and add integrations and content types, and announced a campaign platform enabling custom, repeatable workflows.