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Haystack vs Pydantic AI

Haystack: Open source framework for building search, RAG and agent pipelines Pydantic AI: Type-safe Python agent framework with many model providers

Comparison of Haystack, Pydantic AI
Haystack
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Pydantic AI
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CategoryRAG FrameworksAgent Frameworks
PricingOpen sourcePaid enterprise support tier–
Best for
  • Developers
  • Data teams
  • Enterprise teams
  • Python developers
  • Backend teams
Highlights
  • Modular pipeline components
  • Connects to many model providers
  • Serializable pipelines for deployment
  • Typed outputs validated against your types
  • Model switching with a single string change
  • Fallback models for provider failures
GitHub stars26.9k–
Last update2 days ago–

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