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Developer decisionEnterprise evaluation

LangChain vs LlamaIndex

Side-by-side comparison of LangChain and LlamaIndex across fit, pricing, docs, evidence gaps, and benchmarks.

Decision brief

Best overall

LangChain

Best combined signal across API availability, docs, adoption, reviews, and ecosystem proof.

Best OSS/self-hosted

LangChain

Start here when local control, inspectability, or self-hosting matters.

Best managed/production

LangChain

Strongest shortlist signal for API availability, docs, and operational maturity.

Decision notes

Adoption proof: LangChain

Reviews: No developer reviews yet

Next stepBuild packet and draft write-up
Turn this LangChain vs LlamaIndex decision into something you can build from.

Most developers reading a head-to-head are picking what to ship this week. Take the LangChain vs LlamaIndex decision into a build packet with the setup steps for whichever one you choose, and draft a short write-up of how it went so the next person deciding this has something concrete to read.

Comparing LangChain vs LlamaIndex

LangChain docs
Feature Comparison
LangChain logo

LangChain

RAG Frameworks

Pricing
Open source
Open source
Yes
API
Available
Rating
No reviews
GitHub
Repo linked

Sponsored perks may appear below, but comparison order, evidence, and decision guidance are not bought placements. Decisions weigh verified usage, public product evidence, projects, saves, comparisons, and buyer requirements. Buyer shortlists stay private unless contact is requested.

No live product opportunities yet

You can still use the workbench: build a stack, publish proof, and follow starter challenge programs. New credits, workshops, and launch programs appear here once companies publish them.

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Repo stars: No public repo-star evidence yet

Check before choosing

LangChain has no developer reviews yet.LlamaIndex has no developer reviews yet.LlamaIndex has no public adoption proof yet.

Evidence links

LangChain docsLangChain repoLlamaIndex docsLlamaIndex repo

Missing evidence and weekly return

LangChain: benchmark dataLlamaIndex: verified adoptionLlamaIndex: benchmark data

Save this comparison to watch rank movement, new alternatives, docs changes, examples, and benchmark updates.

LangChain GitHub
LlamaIndex docs
LlamaIndex GitHub
Build packetDraft proof page
Adoption
5 adoptions
Benchmark
No benchmark data
Best for
Framework for composing agents, RAG workflows, retrieval, and tool calls.
Tradeoff
More control and inspectability, but more setup and operational ownership.
LlamaIndex logo

LlamaIndex

RAG Frameworks

Pricing
Open source
Open source
Yes
API
Available
Rating
No reviews
GitHub
Repo linked
Adoption
Public evidence pending
Benchmark
No benchmark data
Best for
Data framework for document ingestion, retrieval, and RAG over private data.
Tradeoff
More control and inspectability, but more setup and operational ownership.
Feature
LangChain logoLangChain
LlamaIndex logoLlamaIndex
CategoryRAG FrameworksRAG Frameworks
PricingOpen sourceOpen source
Open source
API available
RatingNo reviewsNo reviews
GitHub starsRepo linkedRepo linked
Adoption
5 adoptions
Public evidence pending
BenchmarkNo benchmark dataNo benchmark data
Best forFramework for composing agents, RAG workflows, retrieval, and tool calls.Data framework for document ingestion, retrieval, and RAG over private data.
Developer tradeoffMore control and inspectability, but more setup and operational ownership.More control and inspectability, but more setup and operational ownership.