LEANN
RAG on Everything with LEANN: Fast, Accurate, Private RAG Application
Pricing
Free tier
Flat rate
Adoption
↗RisingLicense
Open Source
Data freshness
Verified · Jul 16, 2026Overview
What is LEANN?
LEANN is a framework that enables running fast and accurate RAG applications locally while ensuring privacy. It offers significant storage savings, making it ideal for developers looking to deploy efficient RAG solutions.
Key differentiator
“LEANN stands out by offering a highly efficient, private RAG solution with significant storage savings, making it ideal for developers who need to deploy locally without compromising on performance or privacy.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Primary development is in Python with no official support for other languages
GitHub repository has few contributors and minimal third-party plugins or extensions
Fit analysis
Who is it for?
✓ Best for
Teams needing to deploy RAG applications with minimal storage requirements
Developers focused on maintaining data privacy while using RAG technologies
✕ Not a fit for
Projects requiring cloud-based deployment and scalability
Applications that prioritize real-time streaming capabilities over local processing
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with LEANN
Step-by-step setup guide with code examples and common gotchas.