Letta vs Framer
Side-by-side comparison of AI visibility scores, market position, and capabilities
Open-source AI agent framework (formerly MemGPT). Three-tier persistent memory. $10M seed from Felicis. Letta Code #1 on Terminal-Bench. Jeff Dean backed.
About
Letta (formerly MemGPT) is an open-source AI agent framework developed by researchers at UC Berkeley to solve one of the core limitations of large language models in production: the lack of persistent memory across conversations and tasks. Founded on groundbreaking academic work demonstrating that LLMs could manage their own context windows using a tiered memory system, Letta evolved from a research project into a full-featured agent development platform for building stateful, long-running AI agents.\n\nLetta's three-tier memory architecture — separating in-context working memory, external archival storage, and recall memory — enables agents that remember past interactions, learn from experience, and maintain coherent long-term task execution. The framework supports multi-agent orchestration, tool use, and human-in-the-loop workflows, making it suitable for complex enterprise automation tasks. Letta Code, the company's coding-focused agent, achieved the #1 ranking on Terminal-Bench, the leading benchmark for AI coding agents operating in real terminal environments.\n\nLetta raised a $10M seed round from Felicis Ventures, with backing from Google Distinguished Engineer Jeff Dean — a notable endorsement from one of the architects of modern deep learning infrastructure. The Terminal-Bench leadership demonstrates that Letta's memory architecture translates to measurable performance advantages in real-world agentic tasks. As enterprises move from LLM experimentation to deploying persistent AI agents in production, Letta's open-source foundation and research-backed memory system position it as a foundational framework in the agentic AI stack.
No-code website builder reaching $50M ARR in August 2025 at $2B valuation with 500K MAU; used by 40% of YC's latest batch and Perplexity competing with Webflow for design-quality sites.
About
Framer is a professional no-code website builder and design tool used by marketing teams, startups, and design-led companies to create responsive, interactive websites without writing code — combining the visual fidelity of a design tool (Figma-like precision) with the publishing infrastructure of a CMS, enabling teams to go from design to live website without a separate development handoff. Founded in Amsterdam and backed by $161 million total funding including a $100 million Series D in August 2025 at a $2 billion valuation, Framer reached $50 million ARR in August 2025 (doubling from $25 million in 2024) with 500,000 monthly active users including Miro, Perplexity, Scale AI, and 40% of Y Combinator's latest batch.
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