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 #5 in Frameworks · 58.0 / 100 LlamaIndex #3 in Frameworks · 64.4 / 100

Dimension	Haystack	LlamaIndex
Agent Reality Index	58.0 / 100 (#5)	64.4 / 100 (#3)
Monthly search demand	~4.5k/mo	~12k/mo
Licensing	Open-source	Open-source
Developer adoption	26k★ on GitHub	54k★ on GitHub
Positioning	Low-level / composable · Single-agent	High-level / opinionated · Single-agent

The verdict

LlamaIndex leads Haystack on the Agent Reality Index (64.4 vs 58.0), driven mainly by stronger real-world search demand — the heaviest factor in the index. Haystack remains a credible choice where its positioning fits your workflow better; the row above shows where the two diverge.

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 58.0 of 100 (ranked #5 in Frameworks) and LlamaIndex scores 64.4 of 100 (#3 in Frameworks). The index weights real-world demand most heavily and refreshes monthly.