AI & MLFree plan

Letta open source

Letta is a platform for stateful agents with advanced memory. Its source is released under the Apache-2.0 license, and it can be self-hosted.

LettaUpdated monthly · checked 3 h ago

Letta open source is an AI and ML perk from Letta, offering Apache-2.0 open source, self-hosted, with no funding required.

Who qualifies
No funding needed
Benefit type
Free plan
Apply at Letta

Get new AI & ML programs by email

Get an email if Letta open source closes, changes its offer or sets a deadline. Also every new AI & ML program as it opens. Unsubscribe in one click.

While you apply

Also useful for building with AI models

Applying to Letta takes a few minutes. Referral links, picked for fit and ordered by fit (70%) and what a signup earns us (30%), at no cost to you. They never change this page's ranking.

SupermemoryMemory and retrieval API giving AI apps and agents long-term memory$5Referral linkAymo AIOne chat workspace for 60+ AI modelsFree planReferral linkScraperAPIScraping API that handles proxies, browsers and CAPTCHAs for you1,000 API creditsReferral link
What you get

Inside Letta open source

Letta is a platform for stateful agents that can learn and self-improve over time. Its source code is released under the Apache-2.0 license, and the self-hosting guide explains how to run it on your own infrastructure.

Source: The provider's official program page

Eligibility

Who it's for

Any startup
Funding / backing
No funding needed
Geography
Global
Recurring / expiry
Open-source license (Apache-2.0).
Other requirements
You run the self-hosted deployment yourself.
How to claim

How to apply for Letta open source

Steps to apply
  1. 1Follow the self-hosting guide to run the server on your own infrastructure.
Good to know: Repository read on github.com on October 29, 2026.
Apply at Letta

Source: The provider's official program page

Value is the headline maximum Letta advertises. What your company actually receives depends on your eligibility and how you use the program, and terms can change. A comparison, not endorsed by the programs listed. A link labeled as a referral link may earn us a commission, and a program labeled Same owner comes from the company that runs StartupPerks. Confirm current terms on the provider's page.
Questions

Letta open source: common questions

What do you get with Letta open source?

Letta open source offers Apache-2.0 open source, self-hosted.

Who qualifies for Letta open source?

Letta open source is open to any startup, with no funding required. You run the self-hosted deployment yourself.

Do I need to be VC-backed or in an accelerator to get Letta open source?

No. Letta open source is open to any startup that meets the stated criteria, no investor or accelerator backing required.

How do I apply for Letta open source?

Follow the self-hosting guide to run the server on your own infrastructure.

How long do I have to use Letta open source, and does it expire?

Open-source license (Apache-2.0).

Is Letta open source available outside the US?

Letta open source is available globally, subject to the provider's terms.

Free AI memory APIs, comparedLetta Open Source's free plan next to every other free AI memory APIWhat each AI memory API gives you free today, its main limit and what the first paid plan costs, read from each provider's own page.
Related

Programs like Letta open source

Compared side by side in Best AI Credits for Startups.

Mem0 Open Source
Mem0
See offer
LangMem (open source)
LangChain
Free
MemoryScope (open source)
ModelScope
Free
Graphiti (open source)
Zep
Open source (Apache-2.0)

Are you from Letta, or did you spot something out of date? Send us an update or show it to more founders.

Show this listing on your own site with a badge.