Last Updated: 22 August 2025
Pylon has raised $31 million in Series B funding, co-led by Andreessen Horowitz (a16z) and Bain Capital Ventures (BCV), bringing the company’s total funding to $51 million. The San Francisco startup builds an AI-powered support platform designed for B2B companies that handle requests across Slack, Teams, Discord, email, and more.
The round includes continued participation from General Catalyst and Y Combinator, alongside other existing backers. The company says it has delivered two years of 5x+ year-over-year revenue growth and now serves 750+ customers, with 150+ migrating from legacy tools such as Zendesk, Intercom, and Salesforce Service Cloud.
B2B support isn’t just about closing tickets; it’s about managing relationships with high-value accounts across cross-functional teams. Conversations are technical, long-running, and context-heavy—exactly where traditional, B2C-oriented help desks fall short. Pylon positions itself as a “Zendesk killer,” aiming to centralize those customer conversations and the account context that lives around them.
The company reports retention metrics of 158% net revenue retention and 94% gross revenue retention, and says it’s nearing $10 million in ARR. Pylon argues that AI works best here not to deflect customers, but to speed up human teams while surfacing upsell and churn signals from day-to-day conversations.
Pylon plans to expand its product footprint, deepening its AI capabilities across the post-sales workflow. Today, the platform includes AI Agents (reducing routine ticket work by 50%), AI Assistants (helping agents move up to 3x faster within Pylon), and Account Intelligence (turning conversational data into signals like upsell opportunities or churn risks).
The company will also hire across engineering, sales, marketing, customer success, and support, and invest in market expansion. The goal: become the operating system for post-sales teams by unifying support, success, and solutions engineering on one system.
Founded in November 2022 by CEO Marty Kausas, Robert Eng, and Advith Chelikani, Pylon began with a Slack-to-Zendesk integration before expanding into a full platform purpose-built for B2B support. It now works with fast-growing companies including Together AI, Cognition, Temporal, AssemblyAI, and others.
Beyond ticket resolution, Pylon feeds product feedback to PMs and account signals to revenue teams, turning support conversations into shared, searchable context. The team counts 51 employees, according to the company, and says more than 150 customers have switched from legacy tools.
The Series B was co-led by a16z and BCV with ongoing support from General Catalyst and Y Combinator. Earlier backers mentioned by the company include Comma Capital and Horizon, among others. Pylon says its expanding investor bench reflects a bet that enterprise support is moving to collaborative channels like Slack and Teams—and needs software built for that reality.
