| | |
| ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| CI/CD | [](https://github.com/deepset-ai/haystack/actions/workflows/tests.yml) [](https://github.com/python/mypy) [](https://coveralls.io/github/deepset-ai/haystack?branch=main) [](https://github.com/astral-sh/ruff) |
| Docs | [](https://docs.haystack.deepset.ai) |
| Package | [](https://pypi.org/project/haystack-ai/)   [](https://anaconda.org/conda-forge/haystack-ai) [](LICENSE) [](https://github.com/deepset-ai/haystack/actions/workflows/license_compliance.yml) |
| Meta | [](https://discord.com/invite/VBpFzsgRVF) [](https://twitter.com/haystack_ai) |
[Haystack](https://haystack.deepset.ai/) is an end-to-end LLM framework that allows you to build applications powered by
LLMs, Transformer models, vector search and more. Whether you want to perform retrieval-augmented generation (RAG),
document search, question answering or answer generation, Haystack can orchestrate state-of-the-art embedding models
and LLMs into pipelines to build end-to-end NLP applications and solve your use case.
## Installation
The simplest way to get Haystack is via pip:
```sh
pip install haystack-ai
```
Haystack supports multiple installation methods including Docker images. For a comprehensive guide please refer
to the [documentation](https://docs.haystack.deepset.ai/v2.0/docs/installation).
## Documentation
If you're new to the project, check out ["What is Haystack?"](https://haystack.deepset.ai/overview/intro) then go
through the ["Get Started Guide"](https://haystack.deepset.ai/overview/quick-start) and build your first LLM application
in a matter of minutes. Keep learning with the [tutorials](https://haystack.deepset.ai/tutorials?v=2.0). For more advanced
use cases, or just to get some inspiration, you can browse our Haystack recipes in the
[Cookbook](https://haystack.deepset.ai/cookbook).
At any given point, hit the [documentation](https://docs.haystack.deepset.ai/v2.0/docs/intro) to learn more about Haystack, what can it do for you and the technology behind.
## Features
> [!IMPORTANT]
> **You are currently looking at the readme of Haystack 2.0**. We are still maintaining Haystack 1.x to give everyone
> enough time to migrate to 2.0. [Switch to Haystack 1.x here](https://github.com/deepset-ai/haystack/tree/v1.x).
- **Technology agnostic:** Allow users the flexibility to decide what vendor or technology they want and make it easy to switch out any component for another. Haystack allows you to use and compare models available from OpenAI, Cohere and Hugging Face, as well as your own local models or models hosted on Azure, Bedrock and SageMaker.
- **Explicit:** Make it transparent how different moving parts can βtalkβ to each other so it's easier to fit your tech stack and use case.
- **Flexible:** Haystack provides all tooling in one place: database access, file conversion, cleaning, splitting, training, eval, inference, and more. And whenever custom behavior is desirable, it's easy to create custom components.
- **Extensible:** Provide a uniform and easy way for the community and third parties to build their own components and foster an open ecosystem around Haystack.
Some examples of what you can do with Haystack:
- Build **retrieval augmented generation (RAG)** by making use of one of the available vector databases and customizing your LLM interaction, the sky is the limit π
- Perform Question Answering **in natural language** to find granular answers in your documents.
- Perform **semantic search** and retrieve documents according to meaning.
- Build applications that can make complex decisions making to answer complex queries: such as systems that can resolve complex customer queries, do knowledge search on many disconnected resources and so on.
- Scale to millions of docs using retrievers and production-scale components.
- Use **off-the-shelf models** or **fine-tune** them to your data.
- Use **user feedback** to evaluate, benchmark, and continuously improve your models.
> [!TIP]
>
>
> Are you looking for a managed solution that benefits from Haystack? [deepset Cloud](https://www.deepset.ai/deepset-cloud?utm_campaign=developer-relations&utm_source=haystack&utm_medium=readme) is our fully managed, end-to-end platform to integrate LLMs with your data, which uses Haystack for the LLM pipelines architecture.
## π Visual Pipeline Editor
Use **deepset Studio** to visually create and export your Haystack pipeline architecture as a YAML or as Python code. Learn more about it in [our announcement post](https://haystack.deepset.ai/blog/announcing-studio).
π [Join the waitlist](https://landing.deepset.ai/deepset-studio-waitlist?utm_campaign=2408%20-%20Campaign%20-%20Studio%20Launch&utm_source=github&utm_medium=referral)!
## Telemetry
Haystack collects **anonymous** usage statistics of pipeline components. We receive an event every time these components are initialized. This way, we know which components are most relevant to our community.
Read more about telemetry in Haystack or how you can opt out in [Haystack docs](https://docs.haystack.deepset.ai/v2.0/docs/telemetry).
## π Community
If you have a feature request or a bug report, feel free to open an [issue in Github](https://github.com/deepset-ai/haystack/issues). We regularly check these and you can expect a quick response. If you'd like to discuss a topic, or get more general advice on how to make Haystack work for your project, you can start a thread in [Github Discussions](https://github.com/deepset-ai/haystack/discussions) or our [Discord channel](https://discord.com/invite/VBpFzsgRVF). We also check [π (Twitter)](https://twitter.com/haystack_ai) and [Stack Overflow](https://stackoverflow.com/questions/tagged/haystack).
## Contributing to Haystack
We are very open to the community's contributions - be it a quick fix of a typo, or a completely new feature! You don't need to be a Haystack expert to provide meaningful improvements. To learn how to get started, check out our [Contributor Guidelines](https://github.com/deepset-ai/haystack/blob/main/CONTRIBUTING.md) first.
There are several ways you can contribute to Haystack:
- Contribute to the main Haystack project
- Contribute an integration on [haystack-core-integrations](https://github.com/deepset-ai/haystack-core-integrations)
> [!TIP]
>π **[Check out the full list of issues that are open to contributions](https://github.com/orgs/deepset-ai/projects/14)**
## Who Uses Haystack
Here's a list of projects and companies using Haystack. Want to add yours? Open a PR, add it to the list and let the
world know that you use Haystack!
- [Airbus](https://www.airbus.com/en)
- [Alcatel-Lucent](https://www.al-enterprise.com/)
- [Apple](https://www.apple.com/)
- [BetterUp](https://www.betterup.com/)
- [Databricks](https://www.databricks.com/)
- [Deepset](https://deepset.ai/)
- [Etalab](https://www.deepset.ai/blog/improving-on-site-search-for-government-agencies-etalab)
- [Infineon](https://www.infineon.com/)
- [Intel](https://github.com/intel/open-domain-question-and-answer#readme)
- [Intelijus](https://www.intelijus.ai/)
- [Intel Labs](https://github.com/IntelLabs/fastRAG#readme)
- [LEGO](https://github.com/larsbaunwall/bricky#readme)
- [Netflix](https://netflix.com)
- [NOS Portugal](https://www.nos.pt/en/welcome)
- [Nvidia](https://developer.nvidia.com/blog/reducing-development-time-for-intelligent-virtual-assistants-in-contact-centers/)
- [PostHog](https://github.com/PostHog/max-ai#readme)
- [Rakuten](https://www.rakuten.com/)
- [Sooth.ai](https://www.deepset.ai/blog/advanced-neural-search-with-sooth-ai)