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Haystack vs Google ADK
Side-by-side comparison of Haystack and Google ADK — features, pricing, performance scores, and which to choose for your AI agents.
View All Framework ComparisonsQuick Verdict
| Dimension | Haystack | Google ADK | Winner |
|---|---|---|---|
Ease of Use | 4/5 | 4/5 | Tie |
Scalability | 4/5 | 4/5 | Tie |
Documentation | 5/5 | 4/5 | Haystack |
Community | 4/5 | 3/5 | Haystack |
Performance | 4/5 | 4/5 | Tie |
Overall: Haystack wins 2 categories, Google ADK wins 0, 3 tied
Feature Comparison
| Feature | Haystack | Google ADK |
|---|---|---|
| Primary Language | Python | Python |
| License | Apache-2.0 | Apache-2.0 |
| Pricing | Open Source + Cloud | Open Source + Cloud |
| GitHub Stars | 17,900 | 7,500 |
| Difficulty | Intermediate | Intermediate |
| Enterprise Ready | ||
| Community Size | Large | Medium |
| Category | RAG & Knowledge | Multi-Agent Systems |
Pros & Cons
Haystack
Advantages
Excellent for semantic search and RAG
Modular pipeline architecture
Strong deepset backing and support
Good documentation
Apache 2.0 license
deepset Cloud for managed hosting
Limitations
Primarily RAG-focused not general agents
Learning curve for pipeline design
Smaller community than LangChain
Agent features less mature
Google ADK
Advantages
Official Google framework
Vertex AI integration
Developer UI and CLI tools
Apache 2.0 license
Built-in evaluation utilities
Limitations
Optimized for Google ecosystem
Smaller community
Documentation could be better
Requires GCP for full benefits
Best Use Cases
Haystack
Semantic document search
Question answering over documents
Retrieval-Augmented Generation
Information extraction pipelines
Conversational search
Agent-based document analysis
Google ADK
Multi-agent GCP applications
Vertex AI-powered agents
Enterprise Google Cloud workflows
Tool-integrated agent systems
Getting Started
Haystack
Installation
pip install haystack-ai
Google ADK
Installation
pip install google-adk
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