AI & MLFree plan

LangChain LangMem (open source)

LangMem is LangChain's open-source library that helps agents learn and adapt from their interactions over time. Its code is released under the MIT license.

LangChainUpdated monthly · checked 3 h ago

LangChain LangMem (open source) is an AI and ML perk from LangChain, offering MIT license, free of charge, with no funding required.

Value
Free
Who qualifies
No funding needed
Benefit type
Free plan
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While you apply

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What you get

Inside LangChain LangMem (open source)

LangMem helps agents learn and adapt from their interactions over time. It provides tooling to extract important information from conversations and to maintain long-term memory, and it is a library you run in your own code. The code is released under the MIT license.

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 MIT license.
Other requirements
A library you run inside your own agent code.
How to claim

How to apply for LangChain LangMem (open source)

Steps to apply
  1. 1Install the langmem Python package.
  2. 2No application is needed.
Good to know: Repository read on github.com on October 29, 2026.
Apply at LangChain

Source: The provider's official program page

Value is the headline maximum LangChain 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

LangChain LangMem (open source): common questions

What do you get with LangChain LangMem (open source)?

LangChain LangMem (open source) offers MIT license, free of charge.

Who qualifies for LangChain LangMem (open source)?

LangChain LangMem (open source) is open to any startup, with no funding required. A library you run inside your own agent code.

Do I need to be VC-backed or in an accelerator to get LangChain LangMem (open source)?

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

How do I apply for LangChain LangMem (open source)?

Install the langmem Python package. No application is needed.

How long do I have to use LangChain LangMem (open source), and does it expire?

Open-source MIT license.

Is LangChain LangMem (open source) available outside the US?

LangChain LangMem (open source) is available globally, subject to the provider's terms.

Free AI memory APIs, comparedLangMem'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.
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