stack.tools

RAG & Vector Search

Vector databases, embeddings pipelines, retrieval infra (Pinecone, Weaviate, Qdrant, pgvector, Turbopuffer, Elasticsearch-for-RAG).

32 verified facts across 27 companies

1up

AI answer engine automating RFPs and security questionnaires for sales teams.

Pinecone

Streamlines sales knowledge storage and retrieval for RAG.

High confidence

Receipts · 1

Show quotes (1)
  • “By choosing Pinecone as its vector database, 1up improved its Knowledge Automation System, streamlining data storage and retrieval.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Allspice

AI cooking tools for recipe publishers.

Pinecone

Handles vector storage and similarity search for recipe data.

High confidence

Receipts · 1

Show quotes (1)
  • “Pinecone handles vector storage and similarity search.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Aquant

Agentic AI platform for servicing complex equipment.

Pinecone

Powers semantic search and retrieval in its agentic platform.

High confidence

Receipts · 1

Show quotes (1)
  • “Pinecone is now an anchor of Aquant” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Cursor (Anysphere)

AI code editor and agentic coding platform (Agent, Tab, Composer, Bugbot, Cloud Agents).

turbopuffer

Hosted vector store for codebase-index embeddings powering semantic code retrieval.

High confidence

Receipts · 2

Show quotes (2)
  • “turbopuffer is one of the few pieces of infrastructure we haven't had to worry about as we've scaled.” — turbopuffer.com, Jan 2026
  • “At our server, we chunk and embed the files, and store the embeddings in Turbopuffer” — simonwillison.net, May 11, 2025

Source last verified Jul 26, 2026

Custom codebase indexing (Merkle trees + embeddings) by Anysphere

Indexes codebases with client-side change detection and server-side embeddings for search.

High confidence

Receipts · 2

Show quotes (2)
  • “features a cryptographic hash of every file, along with hashes of each folder” — cursor.com, Jan 27, 2026
  • “it improved response accuracy by 12.5% on average” — cursor.com, Jan 27, 2026

Source last verified Jul 26, 2026

CustomGPT.ai

No-code platform for building RAG agents on business content.

Pinecone

Provides production-grade vector retrieval for real-time RAG agents.

High confidence

Receipts · 1

Show quotes (1)
  • “We trust Pinecone to provide the foundational infrastructure we rely on for accurate, production-grade vector retrieval at scale.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Delphi

Platform for creating interactive AI Digital Minds of real people.

Pinecone

Powers agentic retrieval for conversational Digital Minds.

High confidence

Receipts · 1

Show quotes (1)
  • “Delphi selected Pinecone to power agentic retrieval for every Digital Mind on their platform.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

DocsBot

Platform for custom AI chatbots trained on documentation and content.

Weaviate

Powers semantic and hybrid search for customer queries.

High confidence

Receipts · 1

Show quotes (1)
  • “At query time, Weaviate powers semantic and hybrid search, returning the most relevant context” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Gong

Revenue intelligence platform analyzing customer interactions.

Pinecone

Stores vector embeddings for Smart Trackers concept tracking.

High confidence

Receipts · 1

Show quotes (1)
  • “Gong selected Pinecone as the core database infrastructure” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Instabase

AI platform for unstructured document data and automation.

Weaviate

Indexes and retrieves unstructured data for enterprise AI applications.

High confidence

Receipts · 1

Show quotes (1)
  • “teams across the organization worked together to bring Weaviate into production.” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Jenova

Consumer AI agent platform routing across models and tools.

Pinecone

Provides vector indexing and retrieval for agent memory and RAG.

High confidence

Receipts · 1

Show quotes (1)
  • “Pinecone handles vector indexing and retrieval.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

kapa.ai

AI answer engine that turns product docs into technical support chatbots.

Weaviate

Core vector database and embeddings layer for technical chatbots.

High confidence

Receipts · 1

Show quotes (1)
  • “maintaining Weaviate as their core vector database and embeddings layer solution.” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Klarna

Swedish buy-now-pay-later payments and consumer banking company (NYSE: KLAR).

Neo4j

Graph database powering the internal knowledge stack behind Kiki.

Medium confidence

Receipts · 2

Show quotes (2)
  • “we developed an internal tech stack, using Neo4j and other things, to start bringing data=knowledge together” — cxtoday.com, Mar 4, 2025
  • “Storing CRM data in an LLM would have its limitations.” — diginomica.com, Mar 7, 2025

Source last verified Jul 26, 2026

Loti AI

Digital likeness protection platform for public figures.

Weaviate

Powers likeness detection and unauthorized-content removal at scale.

High confidence

Receipts · 1

Show quotes (1)
  • “Loti AI partnered with Weaviate to power their digital identity protection platform” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

MarvelX

Agentic AI platform for insurance claims automation.

Weaviate

Foundation for claims-automation agents and multimodal search.

High confidence

Receipts · 1

Show quotes (1)
  • “MarvelX AI uses Weaviate as a foundation for their autonomous agent platform” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Melange

Innovation intelligence platform for patent and research search.

Pinecone

Indexes patent and academic datasets for semantic search.

High confidence

Receipts · 1

Show quotes (1)
  • “Our entire search operation relies on Pinecone as the first step in the process.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

MetaBuddy

AI wellness app unifying health and fitness data.

Weaviate

Provides semantic search over unified wellness data.

High confidence

Receipts · 1

Show quotes (1)
  • “MetaBuddy integrated a Weaviate vector database with Query Agent to deliver semantic search” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Morningstar

Investment research and financial data company.

Weaviate

Powers the Intelligence Engine behind AI financial research.

High confidence

Receipts · 1

Show quotes (1)
  • “Through our Corpus API connected to Weaviate, users can build very powerful, low latency search engines in minutes” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Neople

AI digital coworkers for customer support teams.

Weaviate

Serves company-specific knowledge with reliable, fast vector querying.

High confidence

Receipts · 1

Show quotes (1)
  • “Weaviate as their vector database of choice for reliable, accurate and fast querying” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Notion

Connected AI workspace for docs, wikis, projects, and enterprise search (Notion AI, Agents, Q&A).

turbopuffer

Primary vector database for Notion AI search and Q&A.

High confidence

Receipts · 3

Show quotes (3)
  • “we committed to migrating our entire multi billion object workload to turbopuffer in late 2024” — notion.com, Feb 19, 2026
  • “stores it in a vector database (e.g., Turbopuffer)” — notion.com, Jul 2026
  • “Vector database for storing embeddings” — registora.com, Jul 9, 2026

Source last verified Jul 26, 2026

OpenAI embeddings API by OpenAI

Embeds workspace pages for Q&A retrieval.

High confidence

Receipts · 1

Show quotes (1)
  • “we generate an embedding by using an OpenAI zero-retention embeddings API” — notion.com, Jul 2026

Source last verified Jul 26, 2026

Apache Kafka by Apache

Streams page edits into the embedding-indexing pipeline.

High confidence

Receipts · 1

Show quotes (1)
  • “Real-time updates via Kafka consumers that process individual page edits as they happen” — notion.com, Feb 19, 2026

Source last verified Jul 26, 2026

Exa

Provides live web results for AI research and search features.

Medium confidence

Receipts · 1

Show quotes (1)
  • “Service provider for providing web search results” — registora.com, Jul 9, 2026

Source last verified Jul 26, 2026

Obviant

Defense acquisition data and intelligence platform.

Pinecone

Powers hybrid search for defense acquisition recommendations.

High confidence

Receipts · 1

Show quotes (1)
  • “Pinecone enables that by helping us cut through the noise, fast.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Perplexity

AI answer engine combining a proprietary web index with LLMs to deliver cited, conversational search.

Vespa by Vespa.ai

Retrieval and ranking platform for the in-house web index.

High confidence

Receipts · 2

Show quotes (2)
  • “Perplexity has been able to create their own search engine that delivers uncompromising quality” — blog.vespa.ai, Apr 15, 2025
  • “Perplexity has used Vespa.ai's managed platform to efficiently scale its RAG architecture” — vespa.ai, Apr 15, 2025

Source last verified Jul 26, 2026

In-house web index (PerplexityBot) by Perplexity

Proprietary crawler and index feeding hybrid lexical and semantic retrieval.

High confidence

Receipts · 1

Show quotes (1)
  • “Our search index tracks over 200 billion unique URLs, with capacity to track many hundreds of billions more.” — research.perplexity.ai, Jul 17, 2026

Source last verified Jul 26, 2026

predori

AI patent research and monitoring software.

Weaviate

Powers patent intelligence vector retrieval and RAG.

High confidence

Receipts · 1

Show quotes (1)
  • “chose Weaviate Cloud in 2021.” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Shopify

E-commerce platform powering millions of merchant storefronts and an AI merchant assistant (Sidekick).

Google Cloud Dataflow by Google Cloud

Streams real-time embedding pipelines feeding storefront semantic search.

High confidence

Receipts · 1

Show quotes (1)
  • “we use Google Cloud's streaming analytics service Dataflow to power these pipelines” — shopify.engineering, Oct 18, 2024

Source last verified Jul 26, 2026

Stack AI

Enterprise platform for building AI agents without code.

Weaviate

Vector database behind its enterprise agent platform.

High confidence

Receipts · 1

Show quotes (1)
  • “Stack AI chose Weaviate as the vector database to power their enterprise AI orchestration platform.” — weaviate.io, Jul 2026

Source last verified Jul 27, 2026

Terminal X

AI agent platform for investment managers.

Pinecone

Powers real-time retrieval across complex financial data.

High confidence

Receipts · 1

Show quotes (1)
  • “Terminal X rebuilt its retrieval architecture from the ground up with Pinecone at the core.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

Vanguard

One of the world's largest investment management companies.

Pinecone

Powers hybrid retrieval for the Agent Assist support assistant.

High confidence

Receipts · 1

Show quotes (1)
  • “Vanguard chose Pinecone as their vector database to power hybrid retrieval for Agent Assist” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026

ZoomInfo

B2B go-to-market intelligence and data platform.

Pinecone

Powers real-time semantic search for personalized contact recommendations.

High confidence

Receipts · 1

Show quotes (1)
  • “ZoomInfo adopted Pinecone as the vector database powering the platform.” — pinecone.io, Jul 2026

Source last verified Jul 27, 2026