Side-by-Side Comparison · 2026

AutoGen vs Haystack: Full Comparison (2026)

AutoGen is microsoft's framework for multi-agent conversational ai. Haystack is open-source framework for production nlp and rag pipelines. Use the breakdown below to find the right fit for your needs.

AutoGen

Microsoft Research

Free
vs

Haystack

deepset

Free
This page presents factual information sourced from publicly available vendor documentation and product pages. AIHub does not endorse either product. The right tool depends on your specific use case, team, and requirements — we recommend evaluating both tools directly before making a decision.

Side-by-Side Overview

Pricing Model
AutoGen: FreeHaystack: Free
API Access
AutoGen: Not availableHaystack: Not available
Platforms
AutoGen: WebHaystack: Web
Integrations
AutoGen: —Haystack: —
Vendor
AutoGen: Microsoft ResearchHaystack: deepset
Category
AutoGen: FrameworksHaystack: Frameworks
Launch
AutoGen: —Haystack: —

About AutoGen

AutoGen is Microsoft Research's framework for building LLM applications using multiple conversational agents that can collaborate, debate, and use tools to solve complex problems. Supports both autonomous and human-in-the-loop workflows. Microsoft's release candidate of Microsoft Agent Framework, announced on 19 February 2026, came with a guide for migrating Semantic Kernel and AutoGen projects to it.

Designed For

  • Automated research
  • Code generation pipelines
  • Multi-step reasoning
  • Debate-style QA
Full AutoGen details

About Haystack

Haystack by deepset is an open-source framework for building NLP applications, RAG systems, and LLM pipelines. Features a pipeline architecture with 60+ integrations including all major vector databases and LLM providers.

Designed For

  • Document Q&A
  • RAG pipelines
  • Semantic search
  • LLM application development
Full Haystack details

Strengths & Limitations

AutoGen

Strengths

  • Flexible agent patterns
  • Human-in-the-loop support
  • Microsoft backing

Limitations

  • Can be verbose
  • Requires careful prompt engineering

Haystack

Strengths

  • Production-ready
  • 60+ integrations
  • Pipeline architecture

Limitations

  • Steeper learning curve
  • Less popular than LangChain

Frequently Asked Questions

What is the difference between AutoGen and Haystack?

AutoGen is microsoft's framework for multi-agent conversational ai, while Haystack is open-source framework for production nlp and rag pipelines. AutoGen is designed for Frameworks; Haystack is designed for Frameworks. The right fit depends on your specific requirements.

How do the pricing models compare?

AutoGen is available under a Free model. Haystack is available under a Free model. Always verify pricing on each vendor's official website as it may change.

How do I choose between AutoGen and Haystack?

Consider your team's technical requirements, budget, existing tooling, and use case before deciding. We recommend signing up for free trials or demos of both tools where available, and consulting each vendor's documentation. AIHub provides this comparison for informational purposes only.