Letta
Memory-first infrastructure for AI agents
About Letta
Letta (formerly MemGPT) is the open source framework for building AI agents with persistent memory. Unlike standard LLM applications that forget context between sessions, Letta agents remember users, learn over time, and maintain state across conversations. It originated from groundbreaking research at UC Berkeley on memory management for LLMs.
Pitch deck breakdown
How Letta would pitch themselves.
Target customer
AI agents — the core audience Letta's product is built around.
Problem they solve
Letta (formerly MemGPT) is the open source framework for building AI agents with persistent memory. Unlike standard LLM applications that forget context between sessions, Letta agents remember users, learn over time, an… The category has historically been served by tools that miss the modern workflow this product is built around.
Key differentiator
Letta differentiates on memory-first infrastructure for ai agents. Backed by a16z + Jeff Dean, $10M raised — the company has resources + validation to compound this thesis. Founded by Charles Packer + team.
Go-to-market strategy
Early-stage GTM — typically product-led growth (free tier or low-friction onboarding) paired with founder-led sales for the first 100 customers. Heavy content marketing + community presence on Twitter/X, LinkedIn, and category-specific Slack groups.
Letta website preview
Company facts
- Category
- AI
- Funding stage
- Seed
- Total raised
- $10M
- Founded
- 2023
- Team size
- 10–50
- HQ
- San Francisco
- Country
- USA
- Website
- letta.ai
Founders of Letta
- Charles Packer
- Sarah Wooders
Investors backing Letta
- a16z
- Jeff Dean
- Yann LeCun
Frequently asked questions
What does Letta do?
Letta (formerly MemGPT) is the open source framework for building AI agents with persistent memory. Unlike standard LLM applications that forget context between sessions, Letta agents remember users, learn over time, and maintain state across conversations. It originated from groundbreaking research at UC Berkeley on memory management for LLMs.
Where is Letta based?
Letta is based in San Francisco, USA.
When was Letta founded?
Letta was founded in 2023.
How much has Letta raised?
Letta has raised $10M in their Seed round.
Who founded Letta?
Letta was founded by Charles Packer, Sarah Wooders.
Who has invested in Letta?
Letta is backed by a16z, Jeff Dean, Yann LeCun.