Frameworks

Haystack vs LangGraph

TL;DR

How Haystack and LangGraph 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 LangGraph #2 in Frameworks · 67.4 / 100

Dimension	Haystack	LangGraph
Agent Reality Index	58.0 / 100 (#5)	67.4 / 100 (#2)
Monthly search demand	~4.5k/mo	~33k/mo
Licensing	Open-source	Open-source
Developer adoption	26k★ on GitHub	39k★ on GitHub
Positioning	Low-level / composable · Single-agent	Low-level / composable · Single-agent

The verdict

LangGraph leads Haystack on the Agent Reality Index (67.4 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 LangGraph?

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

Is Haystack or LangGraph better?

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

On the Agent Reality Index, Haystack scores 58.0 of 100 (ranked #5 in Frameworks) and LangGraph scores 67.4 of 100 (#2 in Frameworks). The index weights real-world demand most heavily and refreshes monthly.