Frameworks

Haystack vs LlamaIndex

TL;DR

How Haystack and LlamaIndex compare on real-world demand, licensing, adoption and positioning — straight from the Agent Reality Index.

Agent Reality Index

Haystack#4 in Frameworks · 63.0 / 100 LlamaIndex#3 in Frameworks · 65.0 / 100

Dimension	Haystack	LlamaIndex
Agent Reality Index	63.0 / 100 (#4)	65.0 / 100 (#3)
Monthly search demand	~17k/mo	~13k/mo
Licensing	Open-source	Open-source
Developer adoption	26k★ on GitHub	55k★ on GitHub
Positioning	Low-level / composable · Single-agent	High-level / opinionated · Single-agent

The verdict

Haystack and LlamaIndex are neck-and-neck on the Agent Reality Index (63.0 vs 65.0). The gap is small enough that the right pick comes down to fit rather than popularity: Haystack is open-source, while LlamaIndex is open-source. Use the positioning row above to choose by how you actually want to work.

Figures auto-generated from the Agent Reality Index and refreshed monthly. How the index is built →

Frequently asked questions

What is the difference between Haystack and LlamaIndex?

How Haystack and LlamaIndex compare on real-world demand, licensing, adoption and positioning — straight from the Agent Reality Index.

Is Haystack or LlamaIndex better?

How do Haystack and LlamaIndex compare on the Agent Reality Index?

On the Agent Reality Index, Haystack scores 63.0 of 100 (ranked #4 in Frameworks) and LlamaIndex scores 65.0 of 100 (#3 in Frameworks). The index weights real-world demand most heavily and refreshes monthly.