AI & Machine Learning

Haystack Europe 2026

Haystack Europe 2026 is the leading conference dedicated to search relevance and its intersection with AI and generative technologies. Organized by OpenSource Connections, the event brings together practitioners, engineers, product managers, and search professionals to share insights, tackle practical search and relevance challenges, and discuss advancements…

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30Speakers
2Sponsors
85On the bill · sessions
14Companies · in total
§I

Speakers

Programmed at Haystack, in alphabetical order.
Agustín Bernardo
Superhuman
Ángel Maldonado
Empathy
Cem Aksoy
Yelp
Daniel Wrigley
OpenSource Connections
David Tippett
GitHub
Doug Turnbull
Fabian Klemm
François Gaillard
Ivan Provalov
Jens Kürsten
Jon Handler
Amazon Web Services
Kathleen DeRusso
Elastic
Kevin M. Butler
KMW LLC
Kristina Braun
Maëlly Dubois
Adelean
Matin Mahmood
Matt Williams
Öykü Doğru
Paul Berschick
Paul-Louis Nech
Philippe Bouzaglou
René Kriegler
OpenSource Connections
§II

Sponsors

The houses behind the program. Tiers as disclosed.
Elastic
Vespa.ai
§III

Agenda

Selected from 85 sessions on the bill.
  • Monday 09:00 - 13:00

    Training 1: Building Modern Search Platforms for Humans & AI

    Search is no longer just a product feature - it’s becoming a foundational platform that powers AI assistants, copilots, personalization engines, and internal knowledge systems. Shi…

  • Monday 09:00 - 13:00 (4h)

    Training 1: Building Modern Search Platforms for Humans & AI

    Search is no longer just a product feature - it’s becoming a foundational platform that powers AI assistants, copilots, personalization engines, and internal knowledge systems. Shi…

  • Monday 13:45 - 17:45

    Training 2: LLMs as Judges for Search Result Quality

    Large Language Models (LLMs) transform how we build and evaluate search systems, it’s crucial to understand how to use them effectively as “judges.” This condensed, hands-on traini…

  • Monday 13:45 - 17:45 (4h)

    Training 2: LLMs as Judges for Search Result Quality

    Large Language Models (LLMs) transform how we build and evaluate search systems, it’s crucial to understand how to use them effectively as “judges.” This condensed, hands-on traini…

  • Monday, 14. September 09:00 - 13:00

    Training 1: Building Modern Search Platforms for Humans & AI

    Search is no longer just a product feature - it’s becoming a foundational platform that powers AI assistants, copilots, personalization engines, and internal knowledge systems. Shi…

  • Monday, 14. September 13:45 - 17:45

    Training 2: LLMs as Judges for Search Result Quality

    Large Language Models (LLMs) transform how we build and evaluate search systems, it’s crucial to understand how to use them effectively as “judges.” This condensed, hands-on traini…

  • Thursday 09:00 - 09:15 (15m)

    Welcome Back

    We welcome you back for the second conference day of Haystack US 2026.

  • Thursday 09:15 - 10:00 (45m)

    Agentic Tuning: Search Relevance on Autopilot

    Search relevance tuning is notoriously difficult, often requiring a deep understanding of Lucene scoring, complex query DSLs, and iterative manual testing. This session introduces …

  • Thursday 10:05 - 10:50 (45m)

    Evolution of Relevance Engineering to Context Engineering

    As search powers RAG and agentic systems, relevance goals shift from ranking documents to assembling effective context. This talk explores how traditional lexical, semantic, and hy…

Intermission
Part the Second · For the Buyer

What does it mean when 14 companies show up, and 1 bet on three roles at once?

Fourteen companies. one are betting more than once.

The numbers below are derived from the speakers, sponsors, and exhibitors on this page, cross-referenced into one ledger. They are the only thing here that 10times.com cannot tell you.

Who's in the room
1All threespeak · spons · exh
1Sponsoringsponsor only
12Companies Speakingspeaker only

The Triple-Threat

Elastic

Speakers by seniority
  • Other roles30100%

Of 30 on the bill · classified by free-text title

Most-represented companies
  1. 01ElasticSp1V
  2. 02Vespa.aiSp
  3. 03OpenSource Connections2V
  4. 04Adelean1V
  5. 05AWS1V
  6. 06Elasticsearch1V
  7. 07Empathy1V
  8. 08GitHub1V
  9. 09KMW LLC1V
  10. 10MongoDB1V
  11. 11Searchkernel1V
  12. 12Superhuman1V
  13. 13turbopuffer1V
  14. 14Yelp1V
Sponsors by tier
unspecified2
100% of 2