What Does Haystack Do?

Total employeesN/A (Open-source project; difficult to quantify)
HeadquartersN/A (Remote)
Founded2020 (as open-source project)

Haystack is an open-source framework that enables developers to build production-ready search and question answering (QA) systems that work intelligently over large document collections. Using Haystack, you can implement pipelines for various search applications, including semantic search, document ranking, and extractive or generative question answering. It's designed to be flexible, allowing users to integrate different components and models to create custom solutions tailored to their specific needs.

Where Is Haystack's Headquarters?

Haystack officeHaystack officeHaystack officeHaystack office
*Images sourced via web search. Rights belong to original owners

HQ Function

Coordination and development of the open-source Haystack project.

Notable Features:

N/A (Remote - emphasis is on digital collaboration spaces).

Work Culture:

A highly collaborative and distributed environment driven by open-source principles, asynchronous communication, and a focus on building and supporting the Haystack community.

HQ Significance:

While not a physical HQ, the online Haystack community and code repository serve as the central point of coordination and innovation for the project.

Values Reflected in HQ: Openness, collaboration, community, innovation, and a commitment to democratizing access to advanced search and QA technology.

Location:

Haystack supports a global user base and development community. Its open-source nature facilitates contributions and deployments across various regions and industries. The Haystack community provides global support for applications related to research, technology, and data across North America, Europe, Asia, and emerging markets.

Street Address:

N/A (Remote)

City:

N/A (Remote)

State/Province:

N/A (Remote)

Country:

N/A (Remote)

Where Else Does Haystack Operate Around the World?

Berlin, Germany

Address: Although Haystack is open source, it was initially started by deepset, a company that has an office in Berlin.

European hub for Haystack development and commercialization.

Buying Intent Signals for Haystack

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Haystack? Meet the Executive Team

As of April 2025, Haystack' leadership includes:

Milica Vesic - Head of Open Source at deepset
Timo Möller - Co-founder & CTO at deepset

Who's Investing in Haystack?

Haystack has been backed by several prominent investors over the years, including:

N/A (Open-source project backed by deepset)

What Leadership Changes Has Haystack Seen Recently?

Hire0
Exits0

While direct executive changes within the Haystack project are difficult to track (due to its open-source nature), changes within deepset, the company behind Haystack, may indirectly impact the project.

What Technology (Tech Stack) Is Used byHaystack?

Discover the tools Haystack uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Haystack Email Formats and Examples

While Haystack itself doesn't have a formal corporate email structure, email addresses related to the project often use the deepset.ai domain. Common formats involve first name, last name, or initials.

[first].[last]@deepset.ai

Format

john.doe@deepset.ai

Example

70%

Success rate

What's the Latest News About Haystack?

Haystack Blog • October 2023

Haystack Release: Introducing New Features for Improved Search

A new version of Haystack was released, featuring enhanced search capabilities, updated model integrations, and improved documentation....more

Haystack Blog • November 2023

Haystack and RAG

An introductory guide that teaches how to use Haystack and RAG (Retrieval-Augmented Generation) to build scalable applications....more

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