Haystack (framework)
deepset's open-source framework for LLM/RAG/agent apps — Pipelines abstraction; deepset Cloud commercial. Memory is a downstream connector.
Active · Verified 2026-10-27 · fresh as of 2026-10-27 · 25 cited facts, 2 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- deepset's LLM framework vendor fix
- Tier
- T1
- Latest release
- v3.4.1 (2026-10-21) registry fix
- License
- Apache-2.0 vendor fix
- Pricing
- OSS framework free; Haystack Enterprise Platform: Studio $0 (1 user, 100 pipeline hours, cloud deployment), Enterprise custom vendor fix
- Freshness
- 2026-10-27 fix
- Layer
- agent-infra repo fix
- Protocols
- mcp-client, mcp-server, openai-compatible, opentelemetry vendor fix
- Developer activity
- OpenRank 26.07 (12-mo avg 20.68) · 172 participants — 2026-09 third-party fix
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
Deepset $30M Series B 2024.
Technical surface
- API surface
- searched not found
- Backend storage
- not applicable — not a memory product
- Deployment
- Both (self-hosted + managed cloud) — OSS library; deepset Haystack Enterprise Platform (cloud or custom deployment)
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- searched not found
- MCP
- yes — MCPTool/MCPToolset client tools via the mcp-haystack integration (Streamable HTTP, SSE, stdio); Hayhooks can expose pipelines as MCP servers
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Haystack (framework) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other agent frameworks (no first-party memory layer) in the catalog, ranked by inbound references.
- Model Context Protocol (MCP spec) T1
Anthropic-introduced open protocol (Nov 2024) for connecting LLMs to data sources and tools. Donated by Anthropic to the Linux Foundation's Agentic AI Foundation (announced 2025-12-09); now governed as Model Context Protocol, a Series of LF Projects, LLC. Supported across Claude, ChatGPT, VS Code, Cursor and many other clients.
- LangChain (framework) T1
Dominant Python/JS framework for LLM apps — tool calling, agents, retrievers, runnables. Memory is one component (LangMem cross-listed); the framework itself is the product.
- Vercel AI SDK T1
Vercel's TypeScript LLM SDK — streaming, tool calls, structured outputs, agents. Dominant framework for Next.js LLM apps.
- LlamaIndex (framework) T1
Data framework for LLM apps — connectors, indices, query engines, agents, workflows. Memory is one of many subsystems (LlamaIndex Memory cross-listed).
- OpenAI Agents SDK T1
OpenAI's official Python framework for agents — handoffs, guardrails, tracing built in. Successor to OpenAI Swarm (experimental); officially supported.
- LangGraph (orchestration) T1
LangChain's stateful graph runtime for agents — explicit state, persistence, time-travel debugging, human-in-the-loop. Memory is one persistence target (LangGraph Persistence cross-listed).
Sources (24 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is deepset's LLM framework vendor
- What it does & what's distinct deepset's open-source framework for LLM/RAG/agent apps — Pipelines abstraction; deepset … vendor
- Claims / benefits Deepset $30M Series B 2024. vendor
- Created 2020 vendor
- Latest release v3.4.1 (2026-10-21) registry
- License Apache-2.0 vendor
- GitHub deepset-ai/haystack — ~27k stars, last commit 2026-10 repo
- Funding deepset (Haystack maintainer) raised $30M Series B 2024-04 ($45M total; GV led). vendor
- Customers / scale Airbus, Deutsche Telekom, Audi, Siemens, Munich Re; enterprise RAG. vendor
- Pricing OSS framework free; Haystack Enterprise Platform: Studio $0 (1 user, 100 pipeline hours,… vendor
- Deployment Both (self-hosted + managed cloud) — OSS library; deepset Haystack Enterprise Platform (… vendor
- HQ Berlin, Germany. third-party
- Founders / pedigree Milos Rusic (CEO), Malte Pietsch (CTO), Timo Möller; founded 2018. vendor
- Code/weights release Active — last commit 2026-05 · 25,197★ repo
- MCP support yes — MCPTool/MCPToolset client tools via the mcp-haystack integration (Streamable HTTP,… vendor
- Runtimes Python registry
- architecture-deployment-locus local vendor
- licensing-bucket open-core vendor
- positioning-platform-vs-product platform vendor
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":491.07,"as_of":"2026-09","openrank_12mo":20.68,"openrank_current":26.07,"par… third-party
- sdk-languages python registry
- protocol-support mcp-client,mcp-server,openai-compatible,opentelemetry vendor
- maturity ga registry
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-27
- Latest release first recorded as “v3.4.1 (2026-10-21)” source
- Pricing first recorded as “OSS framework free; Haystack Enterprise Platform: Studio $0 (1 user, 100 pipeline hours, cloud deployment), Enterprise custom” source
- Deployment first recorded as “Both (self-hosted + managed cloud) — OSS library; deepset Haystack Enterprise Platform (cloud or custom deployment)” source
- MCP support first recorded as “yes — MCPTool/MCPToolset client tools via the mcp-haystack integration (Streamable HTTP, SSE, stdio); Hayhooks can expose pipelines as MCP servers” source
Related systems
References (46)
- Anthropic Claude (foundation models) integrates with — Haystack integrations directory has an Anthropic integration page ("Use Anthropic Models with Haystack"). (verified 2026-10-29)
- ArangoDB integrates with — Haystack integrations directory has an ArangoDB integration page ("Use the ArangoDB database as a Document Store with Haystack"). (verified 2026-10-29)
- Arize AI integrates with — Haystack integrations directory has an Arize AI integration page ("Trace and Monitor your Haystack pipelines with Arize AI"). (verified 2026-10-29)
- Arize Phoenix integrates with — Haystack integrations directory has an Arize Phoenix integration page ("Trace your Haystack pipelines with Arize Phoenix"). (verified 2026-10-29)
- AWS SageMaker integrates with — Haystack integrations directory has an Amazon Sagemaker integration page ("Use Models from Huggingface, Anthropic, AI21 Labs, Cohere, Meta, and Amazon via Amazon Sagemaker with Haystack"). (verified 2026-10-29)
- Burr (DAGWorks) integrates with — Haystack integrations directory has a Burr integration page ("Build an agent from Haystack components"). (verified 2026-10-29)
- Chroma integrates with — Haystack integrations directory has a Chroma integration page ("A Document Store for storing and retrieval from Chroma"). (verified 2026-10-29)
- Cognee integrates with — Haystack integrations directory has a Cognee integration page ("Add persistent, knowledge-graph-backed memory to your Haystack agents and pipelines with Cognee"). (verified 2026-10-29)
- Cohere Command R+ / Command A integrates with — Haystack integrations directory has a Cohere integration page ("Use Cohere models with Haystack"). (verified 2026-10-29)
- Comet ML integrates with — Haystack integrations directory has an Opik integration page ("Trace and evaluate your Haystack pipelines with Opik"). (verified 2026-10-29)
- Confident AI / DeepEval integrates with — Haystack integrations directory has a DeepEval integration page ("Use the DeepEval evaluation framework to calculate model-based metrics"). (verified 2026-10-29)
- e2b integrates with — Haystack integrations directory has an E2B integration page ("Use E2B cloud sandboxes as tools in a Haystack Agent to run bash commands and read, write, and list files in an isolated Linux environment"). (verified 2026-10-29)
- Elasticsearch integrates with — Haystack integrations directory has an Elasticsearch integration page ("Use an Elasticsearch database with Haystack"). (verified 2026-10-29)
- FalkorDB integrates with — Haystack integrations directory has a FalkorDB integration page ("Use FalkorDB as a document store with native vector search for GraphRAG workloads in Haystack"). (verified 2026-10-29)
- Google Gemini 3 family integrates with — Haystack integrations directory has a Google Gen AI integration page ("Use Google's Gemini models with Haystack via the new Google Gen AI SDK"). (verified 2026-10-29)
- Hindsight (Vectorize) integrates with — Haystack integrations directory has a Hindsight integration page ("Add open-source long-term memory to your Haystack agents with Hindsight's retain, recall, and reflect tools"). (verified 2026-10-29)
- Hugging Face Inference API (Embeddings) integrates with — Haystack integrations directory has a Hugging Face API integration page ("Use models through Hugging Face APIs - Inference Providers, Inference Endpoints, TGI and TEI"). (verified 2026-10-29)
- Jina AI Embeddings integrates with — Haystack integrations directory has a Jina AI integration page ("Use the latest Jina AI embedding models"). (verified 2026-10-29)
- LanceDB integrates with — Haystack integrations directory has a LanceDB Haystack integration page ("A DocumentStore backed by LanceDB"). (verified 2026-10-29)
- Langfuse integrates with — Haystack integrations directory has a langfuse integration page ("Monitor and trace your Haystack requests"). (verified 2026-10-29)
- LiteLLM integrates with — Haystack integrations directory has a LiteLLM integration page ("Use any of 100+ LLM providers with Haystack through LiteLLM"). (verified 2026-10-29)
- Mem0 integrates with — Haystack integrations directory has a Mem0 integration page ("Add persistent, user-specific memory to your Haystack agents and pipelines with Mem0"). (verified 2026-10-29)
- Meta Llama 4 family integrates with — Haystack integrations directory has a Llama API integration page ("Use Llama Models with Haystack"). (verified 2026-10-29)
- Milvus integrates with — Haystack integrations directory has a Milvus integration page ("Use the Milvus vector database with Haystack"). (verified 2026-10-29)
- Mistral Large 2 / Mixtral family integrates with — Haystack integrations directory has a Mistral integration page ("Use the Mistral API for embedding and text generation models"). (verified 2026-10-29)
- Mixedbread AI integrates with — Haystack integrations directory has a mixedbread ai integration page ("Use mixedbread's models as well as top open-source models in seconds"). (verified 2026-10-29)
- MLflow integrates with — Haystack integrations directory has an MLflow integration page ("Trace, evaluate, and monitor your Haystack applications with MLflow"). (verified 2026-10-29)
- Model Context Protocol (MCP spec) integrates with — Haystack integrations directory has a Model Context Protocol - MCP integration page ("Haystack Tool Integration with the MCP"). (verified 2026-10-29)
- MongoDB Atlas Vector Search integrates with — Haystack integrations directory has a MongoDB integration page ("Use a MongoDB Atlas database with Haystack"). (verified 2026-10-29)
- Neo4j integrates with — Haystack integrations directory has a Neo4j integration page ("Use the Neo4j database with Haystack"). (verified 2026-10-29)
- OpenAI GPT family (GPT-5 / GPT-4o / o3 / o4) integrates with — Haystack integrations directory has an OpenAI integration page ("Use OpenAI Models with Haystack"). (verified 2026-10-29)
- OpenLLMetry (Traceloop) integrates with — Haystack integrations directory has a Traceloop integration page ("Evaluate and monitor the quality of your LLM apps and agents"). (verified 2026-10-29)
- OpenRouter integrates with — Haystack integrations directory has an OpenRouter integration page ("Use the OpenRouter API for text generation models"). (verified 2026-10-29)
- OpenSearch integrates with — Haystack integrations directory has an OpenSearch integration page ("A Document Store for storing and retrieval from OpenSearch"). (verified 2026-10-29)
- pgvector integrates with — Haystack integrations directory has a pgvector integration page ("A Document Store for storing and retrieval from pgvector"). (verified 2026-10-29)
- Pinecone integrates with — Haystack integrations directory has a Pinecone integration page ("Use a Pinecone database with Haystack"). (verified 2026-10-29)
- Qdrant integrates with — Haystack integrations directory has a Qdrant integration page ("Use the Qdrant vector database with Haystack"). (verified 2026-10-29)
- Ragas integrates with — Haystack integrations directory has a Ragas integration page ("Use the Ragas evaluation framework to calculate model-based metrics"). (verified 2026-10-29)
- Sentence Transformers integrates with — Haystack integrations directory has a Sentence Transformers integration page ("Use Sentence Transformers embedding and ranking models in your Haystack pipelines"). (verified 2026-10-29)
- Supabase Vector integrates with — Haystack integrations directory has a Supabase integration page ("Use Supabase as a Document Store for Haystack — pgvector for embedding search, PGroonga for full-text BM25 search, and Supabase Storage for file downloads"). (verified 2026-10-29)
- Together AI integrates with — Haystack integrations directory has a TogetherAI integration page ("Use the Together API for text generation models"). (verified 2026-10-29)
- Vespa integrates with — Haystack integrations directory has a Vespa integration page ("Use the Vespa search engine as a document store with Haystack"). (verified 2026-10-29)
- vLLM integrates with — Haystack integrations directory has a vLLM integration page ("Use the vLLM inference engine with Haystack"). (verified 2026-10-29)
- Voyage AI (MongoDB) integrates with — Haystack integrations directory has a Voyage AI integration page ("Use text embeddings and rerankers from Voyage AI"). (verified 2026-10-29)
- Weaviate integrates with — Haystack integrations directory has a Weaviate integration page ("Use a Weaviate database with Haystack"). (verified 2026-10-29)
- Weights & Biases integrates with — Haystack integrations directory has a Weights & Biases Weave Tracer integration page ("Send Haystack traces to Weights & Biases for monitoring and visualization"). (verified 2026-10-29)
Referenced by (16)
- AgentOps integrates with — AgentOps docs have a Haystack (framework) integration page. (verified 2026-10-29)
- Arize Phoenix integrates with — Arize Phoenix docs have a Haystack (framework) integration page. (verified 2026-10-29)
- Chroma integrates with — Chroma's docs have a Haystack (framework) integration page. (verified 2026-10-29)
- Cohere Embed integrates with — Cohere docs "Integrating Embedding Models with Other Tools": Haystack and Cohere guide. (verified 2026-10-29)
- Comet ML integrates with — Comet's Opik docs have a Haystack (framework) integration page. (verified 2026-10-29)
- Langfuse integrates with — Langfuse's integrations directory has a Haystack (framework) integration page. (verified 2026-10-29)
- Milvus integrates with — Milvus's integrations overview lists a Milvus + Haystack (framework) integration tutorial. (verified 2026-10-29)
- MongoDB Atlas Vector Search integrates with — MongoDB's Atlas AI Integrations page lists Haystack (framework) as an integration (some entries are marked community-maintained). (verified 2026-10-29)
- Neo4j integrates with — Neo4j's GenAI ecosystem docs have a Haystack (framework) integration page. (verified 2026-10-29)
- OpenInference integrates with — The OpenInference repo README lists an OpenInference instrumentation package for Haystack (framework). (verified 2026-10-29)
- OpenLLMetry (Traceloop) integrates with — OpenLLMetry's What's Supported page lists Haystack (framework) as instrumented out of the box. (verified 2026-10-29)
- Pinecone integrates with — Pinecone's integrations directory has a Haystack (framework) integration page. (verified 2026-10-29)
- Pydantic Logfire integrates with — Pydantic Logfire integrations docs have a Haystack page. (verified 2026-10-29)
- Qdrant integrates with — Qdrant's documentation has a Haystack (framework) integration page. (verified 2026-10-29)
- Weaviate integrates with — Weaviate's integrations / model-provider docs list Haystack (framework) as an integration. (verified 2026-10-29)
- Weights & Biases integrates with — W&B Weave docs have a Haystack (framework) integration page. (verified 2026-10-29)