Dify vs Haystack
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Dify if you want open-source platform for building llm apps and agentic workflows (Supervised agent, freemium); choose Haystack if you want open-source python framework for production rag, search, and agents (Supervised agent, freemium).
| Dify | Haystack | |
|---|---|---|
| What it is | Open-source platform for building LLM apps and agentic workflows | Open-source Python framework for production RAG, search, and agents |
| Type | platform | framework |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | freemium · Self-host free; Dify Cloud has a free sandbox plan | freemium |
| Best for | developers, smb, mid-market | developers, enterprise |
| Deployment | self-hosted, saas, on-prem | self-hosted, api |
| Modalities | text, api | text, code, api, image |
| Models | model-agnostic, open-source | model-agnostic, open-source |
| Protocols | function-calling, rest-api, mcp | function-calling, mcp, rest-api |
| Integrations | OpenAI, Anthropic, Mistral, Llama, Kubernetes, Docker | OpenAI, Anthropic, Hugging Face, Ollama, Qdrant, Weaviate |
| Capabilities | 4 documented | 4 documented |
Dify
- +Open source and self-hostable (Docker, Kubernetes) with no vendor lock-in
- +Combines workflows, RAG, agents, model management, and observability in one stack
- +Broad model support including any OpenAI-API-compatible endpoint
- -A building platform: you design and operate the apps and their guardrails
- -Self-hosting at scale requires infrastructure expertise
Haystack
- +Mature, explicit, production-oriented architecture with deep RAG and search heritage
- +Broad integrations and an Apache-2.0 license, free to self-host
- +Backed by an established vendor (deepset) with an enterprise tier
- -Python-only
- -The component and pipeline model has a learning curve versus lighter agent SDKs
Which should you choose?
Dify is open-source platform for building llm apps and agentic workflows, best for developers, smb, mid-market. Haystack is open-source python framework for production rag, search, and agents, best for developers, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.