Haystack
Open-source orchestration framework for designing and deploying production-grade AI agents and applications
- Vendor
- deepset
- Also known as
- haystack
Available worldwide
What is Haystack?
A Python-based orchestration framework for building production-ready AI applications with modular pipelines, agent workflows, and retrieval-augmented generation (RAG). Provides explicit control over retrieval, reasoning, memory, tools, and generation components, supporting everything from simple semantic search to complex multi-step agent systems.
Haystack pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free open-source core with paid enterprise support available
Open Source
FreeFree, open-source AI framework with community support
Enterprise
Contact salesEnterprise support with exclusive access to data workflows, testing tools, and scalable cloud or on-premise deployment
What Haystack does
The capabilities that matter for mlops & llmops tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Tool role
- End-to-end ML platform
- Self-hostable / OSS core
- ✓
- Managed cloud available
- ✓
- On-prem / VPC deployment
- ✓
- LLM tracing / observability
- ✓
- Evaluation (offline / LLM-judge / human)
- ✓
- Prompt management + versioning
- ✓
- Experiment tracking / model registry
- -
- Model serving / inference endpoint
- ✓
- OpenTelemetry / OpenLLMetry compatible
- ✓
- Framework-agnostic
- ✓
- Multi-provider model support
- ✓
- No-train-on-customer-data guarantee
- Unknown
Platform & deployment
Independently observed- CLI
- Web
- Cloud / SaaS
- On-premise
- Self-hosted
Integrations (28)
Independently observed- Amazon Bedrock→•
- Claude→•
- Meta→•
- Stability AI→•
- AI21 Labs→•
- Amazon S3←•
- OpenAI
- Anthropic
- Mistral
- Hugging Face
- Weaviate
- Pinecone
- Elasticsearch
- AstraDB
- Apify
- ReadMe
- Azure OpenAI
- Datadog
- OpenTelemetry
- SerperDev
- SearchApi
- Cohere
- AWS Bedrock
- FAISS
- AWS SageMaker
- OpenSearch
- Google Colab
- MCP servers
Security & compliance
Known vulnerabilities: 1 (0 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
Haystack FAQ
Common questions about Haystack, answered from independent, dated evidence.
What is Haystack?
A Python-based orchestration tool for creating and deploying intelligent applications powered by language models. Developers assemble reusable components (data retrieval, model integration, tool execution) into customizable workflows, from question-answering systems to multi-step autonomous agents, deployable on private infrastructure or in the cloud. It is indexed under MLOps & LLMOps Tools.
Source: https://haystack.deepset.ai
Is Haystack free to use?
Haystack is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Paid editions are also offered: Enterprise Starter and Enterprise Platform, priced on request. Pricing changes often, so verify at source before relying on it.
Source: https://haystack.deepset.ai
What platforms does Haystack support?
We have confirmed browser-based access to Haystack. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Source: https://haystack.deepset.ai
Can Haystack be self-hosted?
Yes. Haystack can be deployed cloud / SaaS, hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://haystack.deepset.ai
What does Haystack integrate with?
We have confirmed 21 integrations for Haystack, including OpenAI, Anthropic, Mistral, Hugging Face, Weaviate, Pinecone, Elasticsearch and AstraDB, plus 13 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://haystack.deepset.ai
Is Haystack open source?
Yes. Haystack is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Haystack alternatives
Other mlops & llmops tools we track, ranked by the same independent score.
- LangChainAn open platform for building and managing AI agentsmedium · 69%
- PortkeyUnified command center for operating AI systems reliably in productionmedium · 74%
- BasetenAn inference platform for deploying AI models to production with high performance and global scalemedium · 72%
- Together AIOpen-source model hosting and inference platformmedium · 59%
- Ollamamedium · 56%
- RayDistributed computing framework for scaling machine learning and Python applicationsmedium · 65%
Compare Haystack
Side by side against other mlops & llmops tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Haystack, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 66 | 0.14 | 9.0 | ✓ |
| Capabilities | 100 | 0.07 | 7.0 | ✓ |
| Development activity | 63 | 0.09 | 5.9 | ✓ |
| Release cadence | 99 | 0.05 | 5.1 | ✓ |
| Security score | 94 | 0.04 | 3.9 | ✓ |
| Dependent projects | 40 | 0.06 | 2.5 | ✓ |
| Integrations | 29 | 0.08 | 2.3 | ✓ |
| Stars | 84 | 0.03 | 2.2 | ✓ |
| Security posture | 0 | 0.06 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-10-13 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 66% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Role: platform · Evaluation: Yes · Managed cloud: Yes · Model serving: Yes · Pricing model: free_open_source · Self hostable: Yes | mediumsource · 2026-10-13 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 9 | mediumsource · 2026-10-13 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-10-13 · 98% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-10-13 · 99% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-10-13 · 75% |
Pricing
Release
Security
Is Haystack the right choice for you?
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