Haystack vs LangGraph
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | Haystack | LangGraph |
|---|---|---|
| Pricing | freemium · from Open Source $0/mo | freemium · from Developer $0/seat per month |
| Best for | Engineering teams that need transparent, auditable RAG pipelines running in production., Developers building AI agents with standardized tool calling and control over the agent loop. | Backend and platform engineers building production agents, Teams needing fine-grained control over agent workflows |
| Standout features | Agent hooks to control the agent loop (Haystack 3.0) · First-class skills for reusable agent capabilities · Built-in introspection for debugging agents | Graph-based state management for agent control flow · Human-in-the-loop checkpoints to steer and approve agent actions · Built-in memory storing conversation histories across sessions |
| Viability score | 87/100 | 81/100 |
| API | Yes | Yes |
Haystack is the stronger pick for engineering teams that need transparent, auditable rag pipelines running in production.; LangGraph fits better for backend and platform engineers building production agents.
Built from live tool data, last verified 2026-09-29.
Open-source Python framework for building inspectable RAG pipelines and production agents, installable via pip.
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MIT-licensed agent runtime and low-level orchestration framework for building reliable, stateful AI agents.
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Which is better, Haystack or LangGraph?
The best choice between Haystack and LangGraph depends on your specific use case — we compare them independently on features, current pricing, integrations, and real-world signals (with an on-demand sentiment scan available for each). See the side-by-side breakdown above to match them to your needs.
What are the main differences between Haystack and LangGraph?
The key differences include pricing model, feature set, platform support, and skill level requirements. Review the full comparison on RightAIChoice for a detailed breakdown.
Is there a free version of Haystack or LangGraph?
Check the pricing section in the comparison for the latest pricing details on both tools, including free tiers, trial options, and paid plans.
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Last reviewed: May 12, 2026