Haystack
A Python framework for orchestrating and deploying production-grade AI agents with modular pipelines
- Vendor
- deepset
- Also known as
- haystack
Available worldwide
What is Haystack?
An open-source AI orchestration framework that enables developers to build sophisticated AI agents and applications with modular pipeline architecture. It provides tooling for building, testing, and deploying agents with visibility into decision-making, integrations with multiple LLM providers, and support for both cloud and on-premise environments.
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 commercial enterprise options
Open Source
FreeFree open-source framework with community support
Enterprise Starter
Contact salesConsulting, secure design guidance, and deployment blueprints for production use
Enterprise Platform
Contact salesManaged cloud or self-hosted deployment with observability, governance, and team collaboration features
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
- Hybrid
- On-premise
- Self-hosted
Integrations (25)
Independently observed- Amazon Bedrock→•
- Claude→•
- 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.
- PortkeyAn API gateway for routing requests across thousands of language models with built-in safety guardrailshigh · 76%
- LangChainA platform for building, testing, and operating AI agents at scalemedium · 70%
- BasetenAn inference platform for deploying and running AI models at scalemedium · 73%
- Together AICloud platform for deploying and running open-source AI models with optimized inferencemedium · 61%
- OllamaA platform for running open-source language models locally or in the cloud with cost-effective access.medium · 57%
- RayDistributed computing infrastructure for scaling machine learning 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 | 5.2 | ✓ |
| Security score | 93 | 0.04 | 3.9 | ✓ |
| Dependent projects | 40 | 0.06 | 2.5 | ✓ |
| Stars | 83 | 0.03 | 2.2 | ✓ |
| Integrations | 26 | 0.08 | 2.0 | ✓ |
| 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 · 2026-09-11 · 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 · 2026-09-11 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 7 | mediumsource · 2026-09-11 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-09-11 · 98% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-09-11 · 99% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-14 · 75% |
Pricing
Release
Security
Is Haystack the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Haystack against the rest of the mlops & llmops tools we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves Haystack up or down: nobody can buy rank here, including you.
Take the badge
Live, always current, and free to use on your own site. It shows Haystack's independent score and links back to this profile.
<a href="https://www.vioscale.ai/software/haystack" target="_blank" rel="noopener">
<img src="https://www.vioscale.ai/badge/software/haystack.svg" alt="Haystack, verified on vioscaleAI" width="330" height="76" loading="lazy" />
</a>Markdown, for a README →
[](https://www.vioscale.ai/software/haystack)Claim the profile
Verify you control the domain and you can correct the facts, add the sources we should be reading, and see how AI assistants are describing Haystack. Free, and it does not change the score.
- Correct anything wrong, with evidence
- Point our crawler at the pages that matter
- See which AI systems are reading this profile
Not the owner? How vendor profiles work