How Much Did Letta Raise? Funding & Rounds and Investors

Letta is a privately held software development company founded in 2024 by Charles Packer and Sarah Wooders, headquartered in Berkeley, California. Operating in the Artificial Intelligence and Software Development industry, Letta builds an AI Operating System that transforms stateless language models into perpetual, self-improving agents with advanced memory management. With approximately five employees, Letta enables developers to create and manage intelligent AI applications through cloud-based, developer-friendly tools and APIs.

Letta funding history demonstrates decisive early momentum, having raised a total of $10 million in a single seed round. This round—completed in September 2024—marked a significant milestone for the company, with major venture capital participation and support from prominent AI leaders as angel investors. The influx of Letta investment capital has fueled the company's strategy of rapid product development, supporting the launch and enhancement of Letta Cloud, a hosted platform granting developers access to advanced memory systems for AI agents. By concentrating on a select group of influential investors and a dedicated funding round, Letta is positioning itself as a foundational technology provider for next-generation AI applications.

Funding Rounds

Seed - $10 million - 2024-09-23

Letta's seed funding round was led by Felicis Ventures with participation from Essence VC, Sunflower Capital, and several renowned angel investors. The funds are being allocated to the development and launch of Letta Cloud, a hosted product for building and deploying AI agents with sophisticated memory systems. This investment supports product development, infrastructure, and developer tools aimed at advancing stateful AI agents.

Key Investors

Felicis Ventures

Felicis Ventures led the seed round for Letta. As a leading venture capital firm known for backing transformative technology startups, Felicis provides not only capital but also strategic guidance to Letta as it develops its AI Operating System and hosted cloud solutions.

Essence VC

Essence VC participated in Letta's seed round. The firm is notable within the venture capital ecosystem for its focus on early-stage deep tech investments, providing Letta with both funding and industry connectivity.

Sunflower Capital

Sunflower Capital contributed to the seed funding, supporting Letta’s vision for scalable AI infrastructure. The firm specializes in early-stage investments, particularly in cutting-edge software ventures.

Jeff Dean

Jeff Dean, a legendary AI researcher and Google Senior Fellow, joined the round as an angel investor. Dean’s support brings invaluable technical insight as well as credibility within the AI community.

Clem Delangue

Clem Delangue, CEO and co-founder of Hugging Face, is an angel investor in Letta. His participation underscores investor confidence in Letta's approach to stateful AI agents and developer platforms.

Find funding data on any company with Websets!

Websets is a powerful natural language search and data enrichment tool that helps you discover comprehensive funding information for any company. Whether you're researching Letta funding rounds or exploring investment data for other companies, Websets provides detailed insights into funding history, investors, and financial milestones.

With Websets, you can access detailed funding profiles, investor information, and financial data through intuitive natural language queries. Sign up now to enhance your funding research capabilities.

const run = await exa.agent.runs.create({
  query: "Research Letta's funding rounds, key investors, total raised, and latest funding date. Return structured JSON with field-level citations.",
  effort: "low",
  outputSchema: {
    // company, fundingRounds, keyInvestors, totalRaised
    /* ... */
  }
});

const result = await exa.agent.runs.pollUntilFinished(run.id);

{
  "status": "completed",
  "output": {
    "structured": {
      "company": "Letta",
      "fundingRounds": [
        "..."
      ],
      "keyInvestors": [
        "..."
      ],
      "totalRaised": "Letta has raised a total of $10 million in 1 funding round. The latest and only funding round was a Seed round on September 23, 2024, led by Felicis Ventures with participation from Essence VC, Sunflower Capital, and notable angel investors including Jeff Dean, Clem Delangue, Cristobal Valenzuela, Jordan Tigani, Tristan Handy, Robert Nishihara, and Barry McCardel. The purpose of the seed round was to fund product development, specifically to build Letta Cloud, a hosted product for developers to build and deploy AI agents with advanced memory systems. Letta Cloud includes a hosted agent service accessible via REST APIs and an Agent Development Environment (ADE) for developing and debugging agents with transparent memory management."
    },
    "grounding": [
      {
        "field": "fundingRounds[0].amount",
        "citations": [
          {
            "url": "..."
          }
        ]
      }
    ]
  }
}