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Letta

Letta

Private
San Francisco, CaliforniaAI, Data & Cloud Infrastructurehttps://www.letta.com/

Last Round

Seed

Sep 23, 2024

Est. Valuation

$70M

Total Funding Raised

$10M

Company Overview

Letta is an artificial intelligence company that provides an operating system for building stateful AI agents with persistent memory and advanced reasoning capabilities.

Sector

AI, Data & Cloud Infrastructure

Verticals

ML Platforms, NLP & Conversational AI, Platform-as-a-Service

Business Model

B2B

Customer Profile

Subscription SaaS, Usage-Based SaaS, Freemium, Services & Consulting

AI Layer

Infrastructure

Keywords

stateful AI agentsAI agent platformAI long-term memoryMemGPTLLM orchestrationagentic AIAI agent frameworkAI infrastructureautonomous agentsagent APIagent orchestrationAI memory systemsmodel-agnostic AIopen-source AIusage-based billing

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Letta Comparables

Compare Letta with similar companies based on industry and business-model similarity.

Letta comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Mem0
88%
Zep AI
87%
EverMind
86%

Letta Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
SeedSep 23, 2024

Key People

Founding team and executive leadership

Charles Packer

Co-founder & CEO

Founding Team

Letta Investors

Notable investors and investment history

Letta investors
InvestorRounds
Essence VCSeed
NetshireSeed
Sunflower CapitalSeed
Felicis VenturesSeed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Jan 13, 2026

    Added Footer, a design startup, as a customer.

  • Jan 9, 2026

    Added Kognitos Inc., an AI/Automation startup, as a customer.

Recent news

Latest coverage and updates

  • has_revenueSep 2, 2026

    Letta had revenue of $1.4M on Jun 1st '25.

  • launchesAug 17, 2026

    Letta launches Letta Agents SDK.

  • launchesJun 24, 2026

    Letta Inc. launched Mods on Jun 24th '26.

Letta Filings

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Letta filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about Letta's valuation, stock price, and market status.

Is Letta a public or private company?

Letta is a private company.

What is the current stock price of Letta?

Letta is a private company with no public stock price. No recent secondary market data is available.

How much is Letta worth (valuation)?

Letta's valuation is estimated at $70.0M based on funding round data.

Can I buy Letta stock?

Letta shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was Letta's last funding round?

Letta's most recent funding round was Seed on September 23, 2024.

Who are the main investors in Letta?

Key investors in Letta include Felicis Ventures.

Will Letta IPO soon?

No public IPO plans have been announced for Letta.

How can I track Letta secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Letta's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range14
Year Founded2024
Last FundingSep 23, 2024

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