Letta

At Letta, we envision a future where artificial intelligence transcends its current limitations by evolving continuously through perpetual learning and memory. Our mission is to transform stateless language models into self-improving AI agents that remember and learn over time, enabling a new era of intelligent applications that adapt deeply to human needs.

We are pioneering an AI Operating System that redefines how AI agents manage memory and context, inspired by principles of computing systems but designed for advanced intelligence. Through our innovative platform, Letta Cloud, and comprehensive development tools, we empower developers and enterprises to build AI applications that deliver unprecedented personalization, context awareness, and long-term reasoning.

Driven by cutting-edge research and robust engineering, Letta is creating the foundational technology for AI that is not only reactive but proactive and evolving. We are building the infrastructure for AI that shapes future interactions, making intelligence truly persistent and self-enhancing at scale.

We stumbled upon Letta just as the AI agent hype was reaching fever pitch, and honestly, we were prepared for another overpromising startup. But this Berkeley-based company caught our attention for a reason that's both simple and profound: they're solving the goldfish memory problem that plagues most AI systems today.

Think about it — every time you start a fresh conversation with ChatGPT, it's like meeting someone with complete amnesia. Letta's founders, Charles Packer and Sarah Wooders, both AI PhDs from UC Berkeley, decided this was fundamentally broken for building useful AI agents.

The Memory Revolution

What impressed us most is how Letta approaches memory architecture. Instead of treating AI agents like fancy chatbots, they've built what they call an "AI Operating System" that gives agents persistent memory blocks — kind of like how your computer's OS manages files and processes.

This isn't just theoretical either. Companies like Bilt are already running million-agent recommendation systems on Letta's platform. When an AI can remember your preferences from six months ago and build on that context, the applications become genuinely transformative rather than just impressive demos.

Built for Real Developers

We love that Letta didn't just throw together an API and call it a day. Their Agent Development Environment gives you a proper graphical interface for building, testing, and monitoring AI agents — something that feels surprisingly mature for a company that only emerged from stealth in September 2024.

The fact that they support multiple LLM providers (both open and closed source) through their SDKs shows they understand developers don't want vendor lock-in. You can prototype with OpenAI and deploy with Llama without rebuilding your entire stack.

The Timing Advantage

Letta's $10 million seed round from Felicis and other top-tier VCs makes sense when you see their early customer wins. Hunt Club using it for executive recruiting automation and 11x deploying it for sales research agents — these aren't toy use cases. They're solving real business problems that justify enterprise-level investments.

We're particularly bullish on their approach because they're not trying to build the next ChatGPT competitor. Instead, they're becoming the infrastructure layer that makes truly intelligent, memory-enabled AI agents possible for everyone else. That feels like a much more defensible and scalable business model in the long run.