Haystack vs LlamaIndex
Haystack and LlamaIndex are both agent frameworks for Python. Haystack is published by deepset and LlamaIndex by LlamaIndex. On GitHub, LlamaIndex has 52,641 stars and Haystack has 26,826. Both were last active in Oct 2026. The table lines up where they differ (publisher, license and weekly downloads) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Haystack describes itself as: Open-source Python framework from deepset for modular pipelines and agent workflows covering retrieval, tool use and generation. LlamaIndex: Open-source Python toolkit for RAG and agents over your own data, with event-driven workflows and 300+ integration packages. Licenses: Haystack Apache-2.0, LlamaIndex MIT.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Haystack
deepset
Open-source Python framework from deepset for modular pipelines and agent workflows covering retrieval, tool use and generation.
LlamaIndex
LlamaIndex
Open-source Python toolkit for RAG and agents over your own data, with event-driven workflows and 300+ integration packages.
Who should pick which
- Pick Haystack if you want a stable release (LlamaIndex is marked beta).
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | Haystack | LlamaIndex |
|---|---|---|
| Type | Harness | Harness |
| Publisher | deepset | LlamaIndex |
| License | Apache-2.0 | MIT |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 26,826 | 52,641 |
| Weekly downloads | 145,310 | 1,391,530 |
| Last release | Oct 21, 2026 | Sep 21, 2026 |
| Last activity | Oct 24, 2026 | Oct 14, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
Haystack
pip install haystack-ai
LlamaIndex
pip install llama-index
Also consider
- 0.753score
LangChain
LangChain
Python framework of interoperable components and integrations for building agents and LLM apps, with LangGraph and Deep Agents layered above it.
HarnessAFreshness: A★ 148.4K↓ 37.3M/wk - 0.748score
LangGraph
LangChain
Low-level Python orchestration framework for long-running stateful agents, with durable execution, human review points and short- and long-term memory.
HarnessAFreshness: A★ 43.8K↓ 13.1M/wk - 0.732score
CrewAI
CrewAI
Open-source Python framework for multi-agent workflows, with role-based Crews and event-driven Flows.
HarnessAFreshness: A★ 60.1K↓ 644.6K/wk
Questions
- Is Haystack or LlamaIndex more popular?
- LlamaIndex has more GitHub stars (52,641 against 26,826). Stars measure attention, not quality, so check freshness and docs too.
- Are Haystack and LlamaIndex open source?
- Yes: Haystack is Apache-2.0 and LlamaIndex is MIT.
Related
Cite this page
Haystack vs LlamaIndex. Agent Mart. https://agentmart.dev/compare/haystack-vs-llamaindex (last updated 2026-10-26)