Comparison

DSPy vs Haystack (deepset)

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

DSPy

Declarative, programmable prompt programming from Stanford.

+ Compiles and optimizes prompts instead of hand-writing them
+ Strong for repeatable, measurable prompt engineering
− Different mental model from typical agent frameworks
− Smaller ecosystem of tool integrations

Haystack (deepset)

Production-grade RAG and agent pipelines from deepset.

+ Excellent connectors and retrieval pipeline design
+ Typed, composable pipeline architecture
− Smaller agent-orchestration story than LangGraph
− Steeper for simple chat use cases

Spec	DSPy	Haystack (deepset)
Role	Agent framework	Agent framework
Tags	agent-framework, library	agent-framework, library, rag
License	MIT	Apache-2.0
Open source	Yes	Yes
Self-hostable	Yes	Yes
MCP support	No	Yes
Pricing	free	free
Starting price	BYOK usage cost	BYOK usage cost
Models	byok	byok
Languages	python	python
GitHub stars	35.5k	25.8k
Last activity	2026-06-25	2026-06-26