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langgraph4j vs letta

Compare langgraph4j and letta using verifiable public signals, licensing and project quality.

langgraph4j

letta

Data sourceGitHubGitHubCategoriesAIAIYunoDB quality score96/100100/100PopularityGitHub stars 1,922GitHub stars 24,243LicenseMITApache-2.0PricingOpen sourceOpen source
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