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Head-to-head comparison

Semantic Kernel vs Haystack

Compare Semantic Kernel and Haystack side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.

Haystack logo
Haystack
agent-frameworks

deepset's composable open-source framework for RAG and agent pipelines.

Pricing
Free plan
Rating
—
Votes
0

Feature comparison

Feature
Semantic Kernel
Haystack
Category
agent-frameworks
agent-frameworks
Pricing
Free
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support

Semantic Kernel pros and cons

First-class C#/.NET support, rare among AI frameworks
Free and open source
Enterprise features: type safety, DI, telemetry
Multi-language (C#, Python, Java)
Strategic focus shifting to Microsoft Agent Framework
Concepts like planners have changed across versions
Python support historically trailed .NET

Haystack pros and cons

Composable, typed pipeline model is clear and flexible
Apache-2.0 core, free to self-host with no lock-in
Strong retrieval and search heritage
Broad integrations with model and vector stores
Engineering framework, not a turnkey app
Managed deepset pricing is largely quote-based
2.x rewrite means older 1.x tutorials are outdated

Which one should you choose?

Best overall signal
Semantic Kernel

Selected using Toolglade popularity signals such as views and votes.

Best value signal
Semantic Kernel

Selected using free-plan availability and engagement signals.

Best for

Semantic Kernel

  • enterprise .NET AI apps
  • plugin and tool orchestration
  • LLM integration in existing systems
  • agent building on Microsoft stacks
  • Enterprise .NET development teams

Haystack

  • production RAG pipelines
  • enterprise search
  • document question answering
  • composable AI systems
  • Teams building production RAG and search

FAQ

Is Semantic Kernel better than Haystack?

It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.

Which tool has a free plan?

Semantic Kernel and Haystack offer a free plan based on current Toolglade data.