Question 1

Is DSPy better than LlamaIndex?

Accepted Answer

It depends on your use case. DSPy is known for Programming framework for LLMs — optimize prompts with code, not strings, while LlamaIndex Data framework for connecting LLMs to external data. See our full comparison above for a detailed breakdown.

Question 2

Is DSPy free?

Accepted Answer

DSPy pricing: Free (open-source).

Question 3

Is LlamaIndex free?

Accepted Answer

LlamaIndex pricing: Free (open-source) + Cloud.

Question 4

What are the main differences between DSPy and LlamaIndex?

Accepted Answer

DSPy and LlamaIndex differ in features, pricing, and platform support. DSPy: Programming framework for LLMs — optimize prompts with code, not strings. LlamaIndex: Data framework for connecting LLMs to external data. See the full side-by-side comparison above for details.

Feature	DSPy	LlamaIndex
Category	Developer Tools	Data & ETL
Pricing	Free (open-source)	Free (open-source) + Cloud
GitHub Stars	22k	✓ More stars 38k
Platforms	—	Linux, macOS, Windows
Key Features		✓ RAG pipelines ✓ Data connectors ✓ Indexing ✓ Query engine ✓ Agent tools
Pros	+ Systematic prompt optimization + Composable and testable LLM programs + Works with any LLM provider + Backed by Stanford NLP	+ Best-in-class RAG framework + 100+ data connectors + Multiple index types + Great documentation + Active community
Cons	− Steep learning curve − Different paradigm from traditional prompting	− Can be complex for simple use cases − Abstractions hide complexity − Learning curve for advanced features − Some features require LlamaCloud
Tags		ragdataindexingopen-source

DSPyvsLlamaIndex

DSPy

LlamaIndex

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