Letter AI has secured $10.6 million in Series A funding to expand its AI-driven platform designed to help revenue teams boost performance through smarter content, personalized training, and real-time coaching tools.
The funding round was led by Stage 2 Capital, with additional backing from Lightbank, Y Combinator, Formus, Northwestern Mutual Future Ventures, Mangusta, and several other investors.
As part of the deal, Mark Roberge, co-founder and managing director at Stage 2 Capital and the founding Chief Revenue Officer of HubSpot, will take a seat on Letter AI’s board of directors.
In a blog post announcing the funding, the company shared that its customer base has expanded fifteenfold over the past year, with major clients such as Lenovo, Adobe, Novo Nordisk, Plaid, Zip, Kong, and SolarWinds adopting its AI platform to enhance their sales enablement strategies.
Looking back on the past year, the company said its mission remained clear to help go-to-market teams get up to speed faster and close deals more effectively. Two years ago, Letter AI introduced its AI-native sales training and coaching platform, featuring advanced roleplays and tailored learning paths that quickly gained traction with customers.
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Building on that success, the startup rolled out an AI-powered content hub designed for revenue teams to create, manage, and share materials more efficiently. The platform now offers automated tagging, metadata management, translations, and content generation all enhanced by personalized AI agents that surface information instantly across platforms like Slack, Microsoft Teams, and the app itself.
Letter AI also introduced interactive sales rooms equipped with embedded AI agents to maintain buyer engagement throughout the deal process and added RFP automation that can respond to more than 80% of questions, saving teams hundreds of hours. Today, its tools support over 20 languages, underscoring its push for global scalability.
Looking ahead, the company says its goal is to redefine sales enablement by turning it from a passive process into one that is proactive, personalized, and fast-moving all powered through a single, AI-native platform.
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“When we speak with enablement leaders and CROs on their biggest pain points before Letter AI, we hear the same challenges: enablement is reactive, generic, and slow. To put it more simply, enablement is passive. We are on a mission to make enablement active – that is, proactive, personalized, and high velocity. All delivered in a unified, deeply integrated platform – not dozens of point solutions that fail to talk to each other,” the company stated in their blogspot.
Letter AI was founded by Ali Akhtar and Armen Forget, who bring experience from leading roles in product and engineering at companies such as Samsara, McKinsey, and project44.