Letta vs JetBrains
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.
JetBrains reported estimated $700M+ revenue in 2024. 2,000+ employees. Prague, Czech Republic. Private company. Created IntelliJ IDEA, PyCharm, WebStorm, and Kotlin programming language. 16M+ users worldwide.
About
JetBrains was founded in 2000 in Prague by Sergey Dmitriev, Valentin Kipyatkov, and Eugene Belyaev, pivoting from consulting to IDE development after identifying a gap in developer tooling quality. IntelliJ IDEA, released in 2001, set a new standard for Java development with intelligent code completion, refactoring, and static analysis. JetBrains built a family of language-specific IDEs on a shared platform: PyCharm, WebStorm, GoLand, CLion, Rider, and DataGrip. The company also created Kotlin, which became Google's preferred Android language in 2017.\n\nBeyond IDEs, JetBrains offers YouTrack for project tracking, TeamCity for CI/CD, Space for team collaboration, and the JetBrains Marketplace for plugins. The Toolbox subscription model serves individual developers while enterprise licenses serve larger teams. IntelliJ IDEA Community Edition remains free and open source to maintain developer mindshare. JetBrains AI Assistant, integrated across the suite, brings AI-powered code generation and refactoring to millions of daily users.\n\nJetBrains reported over $700 million in revenue for 2024 and employs more than 2,000 people globally. The company has remained fully independent and privately held since founding — unusual at this revenue scale. Its IDEs are deeply embedded in the daily workflows of professional developers worldwide, and its Kotlin stewardship gives it strategic relevance well beyond the IDE category as AI-augmented development workflows expand.
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