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AI-Powered Search Consulting & Products

Delivering the Future
of AI Search

Searchkernel helps teams build search that actually works — relevance engineering, AI-powered retrieval, RAG, and agentic search, led by the expert who wrote the book on AI-Powered Search.


We invented technologies like Wormhole Vectors, Semantic Knowledge Graphs, and Learning to Understand approaches for query intent.

250+ CompaniesClients Paying for Services/Training
#1 Book & TrainingWe wrote the book on AI-Powered Search
3000+ EngineersSearch & AI Engineers We've Trained
100+ AI Search Talks & PublicationsConferences & Lightning Lessons
Teams & engineers we've trained come from
AppleMetaNVIDIAAmazonTikTokRedditPinterestDuckDuckGoIndeedDoorDashBest BuyYelpElasticOpenSearchQdrantDepopKrogerBMWAT&TZalando AppleMetaNVIDIAAmazonTikTokRedditPinterestDuckDuckGoIndeedHome DepotDoorDashBest BuyYelpElasticOpenSearchQdrantDepopKrogerBMWAT&TZalando
Areas of Expertise

Deep coverage across the retrieval stack.

Query Understanding

Intent classification, semantic query parsing, disambiguation & entity resolution.

Vector & Hybrid Retrieval

Embeddings, ANN, quantization, sparse + dense fusion, multivector & multimodal search.

RAG & Agentic Search

Chunking, adaptive queries, agentic search loops, guardrails, retrieval for LLM consumers.

Search Platforms

Solr, OpenSearch, Elasticsearch, Vespa, Qdrant & modern vector search engines.

Knowledge Graphs

Semantic knowledge graphs, ontology mining, graph-powered relevance & reasoning.

Personalization & RecSys

Collaborative filtering, behavioral embeddings, real-time user modeling.

Signals & Reflected Intelligence

Click-stream models, signals boosting, self-learning relevance loops.

Learning to Rank

LambdaMART to cross-encoders, click models, feature engineering, bias correction.

Wormhole Vectors

We help you bridging sparse, dense, and behavioral vector spaces to significantly outperform your current vector or hybrid search systems.

Pseuo-relevance Feedback

Move beyond "ranking-only" search approaches followed by 95% of engineering teams and toward better content-based query understanding.

Local & Fine-tuned Search Models

Break your dependence on expensive and unreliable public APIs. We help you fine-tune, deploy, and run your own Language Models.

LLM as a Judge

Generate reliable relevance judgement training data at scale, leveraging best practices to balance and measure human, implicit, and LLM-based judgments.

Why Searchkernel

Led by the expert who wrote the book on AI-powered search.

Trey Grainger

Trey Grainger

Founder, Searchkernel · Author, AI‑Powered Search

Trey is lead author of AI‑Powered Search (Manning) and co-author of Solr in Action. He previously served as CTO of Presearch, and as Chief Algorithms Officer & SVP Engineering at Lucidworks, where his teams powered search for hundreds of the world's leading organizations. He is also lead instructor of the industry's most popular live course on modern retrieval (on Maven), Adjunct Professor of Computer Science at Furman University, and a technical advisor at OpenSource Connections.

Founder · Searchkernel Author · AI‑Powered Search (Manning) Instructor · Maven Adjunct Professor of CS · Furman University ex-CTO · Presearch ex-Chief Algorithms Officer · Lucidworks ex-SVP Engineering · Lucidworks ex-Dir of Engineering · CareerBuilder Stanford IR·GA Tech·Furman 12+ research papers 3+ Books

AIPoweredSearch.com

Searchkernel doesn't just practice AI-powered search — we literally wrote the book on it and run the online community around it.


The Book + AI-Powered Search Community

We built and maintain AIPoweredSearch.com, the industry's hub for modern retrieval; we authored AI‑Powered Search (Manning), the definitive guide with over 20,000 copies sold; and we host the AI‑Powered Search community, where over 1,200 search & AI practitioners share the latest techniques, research, and code.

20,000+ copies sold 1,200+ member community Built & maintained by Searchkernel
Products

Query intelligence: contextualize your data, domain, and users' intent

Early access

Searchkernel QIQ

/kwɪk/ · "quick" · Query IQ

Searchkernel QIQ (Query IQ) gives your search engine an IQ boost. It's a query intelligence layer that sits in front of any retrieval system — understanding what your users (and agents) actually mean before a single document is fetched.

  • Intent classification & query-sense disambiguation
  • Semantic query parsing, rewriting & enrichment
  • Drops in ahead of Solr, OpenSearch, Elasticsearch, Vespa, or your vector DB
  • Built for both human queries and agentic / RAG traffic
  • Works with or without an LLM, so supports low-latency search requirements
Sample Query: Hover or tap any term, filter, or bar to explore
QIQ scores 125 candidate interpretations across 8 terms — before your search engine sees the query
What the shopper means
Behind the scenes
"black" · 52 candidate interpretations scored
Eight words in, eight structured filters out. Hover any term to see the interpretations QIQ weighed — and rejected — along the way.
Consulting Services

Take search from "broken" to a strategic advantage.

01

Search Relevance Audits & Strategy

A rigorous, evidence-based assessment of your current search — and a prioritized roadmap to fix it.

  • Relevance evaluation & measurement frameworks
  • Query intent & failure-mode analysis
  • Architecture & platform recommendations
02

AI-Powered Search Implementation

Hands-on engineering of modern retrieval, from hybrid search to production ranking models.

  • Hybrid lexical + vector retrieval & reranking
  • Learning to rank, click models & signals boosting
  • Semantic knowledge graphs & personalization
03

RAG & Agentic Search Systems

Retrieval is the hardest part of RAG. We build the retrieval layer your AI systems deserve.

  • RAG architecture, chunking & adaptive queries
  • Agentic search loops & tool-using retrieval
  • Evaluation: LLM-as-judge & interleaving
04

Training & Fractional Leadership

Level up your team — or borrow a search leader with two decades of scars and wins.

  • Private team cohorts of the AI‑Powered Search course
  • Custom workshops on your stack & data
  • Advisory & fractional head-of-search engagements
How we work

From discovery to production.

01

Discover

We dig into your users, queries, content, and signals to understand what "relevant" means in your domain.

02

Diagnose

Measurement first: evaluation frameworks and failure analysis that turn "search feels bad" into a ranked backlog.

03

Design

An architecture matched to your stack and scale — not a rewrite for its own sake.

04

Deliver

Hands-on implementation alongside your engineers, so the expertise stays when the engagement ends.

Team training

Bring the industry's leading search course in-house.

AI-Powered Search course banner Recent cohort sold out

AI‑Powered Search: Modern Retrieval for Humans & Agents

Private cohorts and custom workshops based on the popular live course taught by Trey Grainger and Doug Turnbull — tailored to your team's stack, data, and roadmap.

Private team cohorts Custom curriculum Hands-on labs
Results

What clients & students say

4.8★★★★★
67 ratings · Alumni of the live course
Read all reviews on Maven