AI Context & Data Infrastructure

25 Companies 3 Categories AI Infrastructure

Infrastructure that turns proprietary data into usable, retrievable and persistent context for AI applications and agents.

Filter and ordering

Category

AI Databases & Retrieval

11 companies

Systems that store, index and retrieve information for AI applications. This includes vector databases, multimodel databases and retrieval engines built around semantic or hybrid search.

Barrel DB

barrel-db.eu

Barrel DB builds open-source, AI-native databases in Erlang, including a vector database for semantic/hybrid search and a document database for replication and sync.

Unknown Employees Unknown Stage 2025 Founded
Trajectory Signals Strength Slight

Confidence: Medium

Qdrant

qdrant.tech

Qdrant is an open-source vector database and cloud retrieval platform for semantic search, RAG, recommendation systems, and other AI applications. ([qdrant.tech](https://qdrant.tech/about-us/))

100+ employees Employees Series B Stage 2021 Founded
Trajectory Signals Strength Strong

Confidence: High

Weaviate

weaviate.io

Weaviate builds an AI-native, open-source vector database and retrieval engine for storing, indexing, and semantically searching unstructured data for AI applications.

90+ employees Employees Series B Stage 2019 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

SurrealDB

surrealdb.com

SurrealDB is a multi-model, AI-native database platform that combines relational, document, graph, time-series, vector, geospatial, and key-value data with built-in search and retrieval for modern applications.

Unknown Employees Unknown Stage 2021 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Vespa.ai

vespa.ai

Vespa.ai builds Vespa, an AI search platform and distributed serving engine for retrieval, ranking, machine learning inference, and real-time serving over large-scale text, vector, tensor, and structured data.

51-200 employees Employees Series A Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Meilisearch

meilisearch.com

Meilisearch is a flexible, user-focused search engine and AI retrieval platform for adding fast full-text, hybrid, and semantic search to websites and applications.

11-50 employees Employees Series A Stage 2019 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Pinecone

pinecone.io

Pinecone is a vector database and knowledge engine for building AI applications that need fast semantic retrieval, search, and long-term memory.

137 employees Employees Series B Stage 2019 Founded
Trajectory Signals Strength Strong

Confidence: Medium

Chroma

trychroma.com

Chroma is an open-source embedding/vector database and retrieval platform for AI applications, with support for storing embeddings, dense and sparse search, metadata filtering, and multimodal retrieval.

11-50 employees Employees Unknown Stage 2022 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

turbopuffer

turbopuffer.com

turbopuffer is an object-storage-native search database that combines vector and full-text retrieval for AI applications, optimized for scalable, low-cost semantic search over very large document corpora. ([turbopuffer.com](https://turbopuffer.com/about))

11-50 employees Employees Seed Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

LanceDB

lancedb.com

LanceDB is an open-source, AI-native multimodal lakehouse and vector database platform for storing, retrieving, and working with embeddings, images, video, and other AI data.

11-50 employees Employees Series A Stage 2022 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Zilliz

zilliz.com

Zilliz is the company behind Milvus, an open-source high-performance vector database and managed cloud platform for AI applications that need semantic search, retrieval, and similarity matching over unstructured data. ([milvus.io](https://milvus.io/intro?utm_source=openai))

51-200 employees Employees Series B Stage 2017 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Category

Memory & Context Infrastructure

5 companies

Infrastructure that helps AI agents retain, update and reuse information across interactions. These systems manage persistent memory and assemble relevant context when an agent needs it.

Cognee

cognee.ai

Cognee builds an open-source AI memory platform and data layer that helps agents retain, update, and retrieve context across sessions using documents, relational data, and knowledge graphs.

11-50 employees Employees Seed Stage 2024 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Mem0

mem0.ai

Mem0 builds a persistent memory layer for AI agents and applications, letting developers store, retrieve, and update user context across sessions so systems can remember preferences, facts, and prior interactions.

2-10 employees Employees Series A Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Zep

getzep.com

Zep builds persistent memory and context infrastructure for AI agents, using temporal context graphs to retain, update, and retrieve information across chats, documents, events, and business data.

11-50 employees Employees Seed Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Letta

letta.com

Letta builds infrastructure for stateful AI agents, focused on persistent memory, context management, and agent runtimes that help models learn from experience over time.

11-50 employees Employees Seed Stage 2024 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Graphlit

graphlit.com

Graphlit is a developer-focused AI context layer that ingests multimodal data, extracts entities/relationships, and provides search and retrieval APIs so AI agents can use persistent, time-aware organizational memory.

2-10 employees Employees Seed Stage 2021 Founded
Trajectory Signals Strength Strong

Confidence: High

Category

Data Ingestion & Transformation

9 companies

Infrastructure that converts proprietary documents and live enterprise data into AI-ready context. It handles parsing, extraction, transformation and continuous synchronization before the data reaches retrieval or memory systems.

Pathway

pathway.com

Pathway builds a live data framework for powering AI applications, RAG, ETL, and real-time data processing from continuously changing enterprise data sources.

11-50 employees Employees Seed Stage 2020 Founded
Trajectory Signals Strength Slight

Confidence: Medium

Cradl AI

cradl.ai

Cradl AI is a no-code AI document automation platform that extracts, validates, and structures data from PDFs, scans, images, and forms for downstream workflows and integrations. ([cradl.ai](https://www.cradl.ai/?utm_source=openai))

2-10 employees Employees Unknown Stage 2016 Founded
Trajectory Signals Strength Slight

Confidence: Medium

Anyformat

anyformat.ai

Anyformat is a document intelligence platform that parses, extracts, validates, and routes data from documents, images, scans, and audio into structured outputs for enterprise workflows.

11-50 employees Employees Seed Stage 2024 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Unstructured

unstructured.io

Unstructured builds an AI data processing platform that converts complex, unstructured enterprise documents and other multimodal sources into clean, structured, AI-ready outputs for retrieval, search, and downstream LLM applications.

51-200 employees Employees Series A Stage 2022 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

LlamaIndex

llamaindex.ai

LlamaIndex is an AI data framework and platform that helps developers and enterprises ingest, parse, transform, index, and query proprietary data for LLM and agent applications.

11-50 employees Employees Series A Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Reducto

reducto.ai

Reducto is an AI document intelligence platform that parses complex documents and unstructured files into structured, AI-ready data for downstream workflows and LLM applications.

78 employees Employees Series B Stage 2023 Founded
Trajectory Signals Strength Moderate

Confidence: Medium

Ragie

ragie.ai

Ragie is a managed context/retrieval infrastructure company that helps developers build AI applications on top of their own data with document parsing, ingestion, indexing, retrieval, and syncing across enterprise sources.

2-10 employees Employees Seed Stage 2024 Founded
Trajectory Signals Strength Slight

Confidence: Low

Contextual AI

contextual.ai

Contextual AI builds an enterprise context layer that ingests, syncs, and transforms private documents and data into AI-ready context for building grounded agents and applications.

51-200 employees Employees Unknown Stage 2023 Founded
Trajectory Signals Strength Slight

Confidence: Medium

Holofin

holofin.ai

Holofin is a Paris-based document intelligence platform that turns financial and administrative PDFs into validated, structured data for enterprise workflows.

2-10 employees Employees Unknown Stage 2025 Founded
Trajectory Signals Strength Slight

Confidence: Medium

Investors

Top-tier and active investors

Top-tier investors who invested

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Other investors

Funding & Exits

May 2026

Reducto

Acquisition

Acquirer: Reducto • Status: Announced

Reducto
Mar 2026

Qdrant

Series B

$50M • Investors: AVP, Bosch Ventures, Unusual Ventures, Spark Capital, 42CAP

Qdrant
Feb 2026

Cognee

Seed

$7.5M • Investors: Pebblebed, 42CAP, Vermilion Cliffs Ventures, Google DeepMind angels, n8n angels, Snowplow angels

Cognee

SurrealDB

Series A extension

$23M • Investors: Chalfen Ventures, Begin Capital, FirstMark, Georgian

SurrealDB
Nov 2025

Anyformat

Seed

EUR 3.3M • Investors: Kibo Ventures, 4Founders, Abac Nest Ventures, Decelera Ventures

PR Newswire
Oct 2025

Reducto

Series B

$75M • Investors: Andreessen Horowitz, Benchmark, First Round Capital, Y Combinator, BoxGroup

Reducto

Mem0

Series A

$20M • Investors: Basis Set Ventures, Kindred Ventures, Peak XV Partners, GitHub Fund, Y Combinator

Mem0
Jun 2025

LanceDB

Series A

$30M • Investors: Theory Ventures, CRV, Y Combinator, Databricks Ventures, RunwayML, Zero Prime, Swift

LanceDB
Apr 2025

Reducto

Series A

$24.5M • Investors: Benchmark, First Round Capital, BoxGroup, Y Combinator

Reducto
Mar 2025

LlamaIndex

Series A

$19M • Investors: Norwest Venture Partners, Greylock

PR Newswire
Jan 2025

Graphlit

Seed

$3.6M • Investors: 8VC, Bossa Invest, Feld Ventures, MAVA Ventures, Vectura Ventures, F4 Fund

Dealroom
Dec 2024

Pathway

Seed

$10M • Investors: TQ Ventures, Kadmos Capital, Inovo VC, Market One Capital, id4 Ventures, Łukasz Kaiser

Sifted
Nov 2024

Cognee

Pre-Seed

$1.5M • Investors: 42CAP, Angel Invest, Combination VC, Bob van Luijt, Alexander Dean

Nordic9
Oct 2024

Reducto

Seed

$8.4M • Investors: First Round Capital, Y Combinator, BoxGroup, SV Angel, Liquid 2 Ventures

Reducto

Anyformat

Pre-Seed

EUR 520K • Investors: 4Founders Capital, Abac Nest Ventures, business angels

PR Newswire UK
Sep 2024

Letta

Seed

$10M • Investors: Felicis, Sunflower Capital, Essence VC

PR Newswire
Aug 2024

Contextual AI

Series A

$80M • Investors: Greycroft, Bain Capital Ventures, Lightspeed, Lip-Bu Tan, Conviction/Sarah Guo, Recall Capital, Bezos Expeditions, NVentures, HSBC Ventures, Snowflake Ventures

Contextual AI

Ragie

Seed

$5.5M • Investors: Craft Ventures, Valor, Saga VC, Chapter One

Ragie
Jun 2024

SurrealDB

Series A

$20M • Investors: FirstMark, Georgian, Crew Capital, Alumni Ventures

SurrealDB
May 2024

LanceDB

Seed

$8M • Investors: CRV, Y Combinator, Essence VC, Swift Ventures

TechCrunch
Mar 2024

Unstructured

Series B

$40M • Investors: Menlo Ventures, Databricks Ventures, IBM Ventures, NVentures, Vivek Ranadivé, Chet Kapoor, Allison Pickens, Madrona, Bain Capital Ventures, Mango Capital

Business Wire
Jan 2024

Zep

Convertible Note

$500K • Investors: Y Combinator

CB Insights

Qdrant

Series A

$28M • Investors: Spark Capital, Unusual Ventures, 42CAP

Qdrant
Nov 2023

Vespa.ai

Series A

$31M • Investors: Blossom Capital

Vespa.ai
Jul 2023

Unstructured

Seed and Series A

$25M • Investors: Bain Capital Ventures, Madrona, M12 Ventures, Mango Capital, MongoDB Ventures, Shield Capital, Harrison Chase, Bob van Luijt, Josh Lefkowitz

Business Wire
Jun 2023

Contextual AI

Seed

$20M • Investors: Bain Capital Ventures, Lightspeed, Greycroft, SV Angel, Elad Gil, Lip-Bu Tan, Sarah Guo, Amjad Masad, Harry Stebbings, Fraser Kelton, Sarah Niyogi, Nathan Benaich

Contextual AI
May 2023

LlamaIndex

Seed

$8.5M • Investors: Greylock, Jack Altman, Lenny Rachitsky, Mathilde Collin, Raquel Urtasun, Joey Gonzalez

Business Wire
Apr 2023

Chroma

Seed

$18M • Investors: Quiet Capital, Naval Ravikant, Max Altman, Jack Altman, Jordan Tigani, Guillermo Rauch, Akshay Kothari, Amjad Masad, Spencer Kimball

Chroma

Pinecone

Series B

$100M • Investors: Andreessen Horowitz, ICONIQ Growth, Menlo Ventures, Wing Venture Capital

Pinecone

Weaviate

Series B

$50M • Investors: Index Ventures, Battery Ventures, New Enterprise Associates, Cortical Ventures, Zetta Venture Partners, ING Ventures

PR Newswire

Qdrant

Seed

$7.5M • Investors: Unusual Ventures, 42CAP, IBB Ventures, Amr Awadallah, Junior Kim

Qdrant
Jan 2023

SurrealDB

Seed

$6M • Investors: FirstMark Capital, Matt Turck

SurrealDB
Dec 2022

Pathway

Pre-Seed

$4.5M • Investors: Inovo VC, Market One Capital, Roger Crook, Łukasz Kaiser

Sifted
Nov 2022

Qdrant

Pre-Seed

EUR 2M • Investors: 42CAP, IBB Ventures, Business angels

IBB Ventures
Oct 2022

Meilisearch

Series A

$15M • Investors: Felicis, Guillermo Rauch, CRV, Mango Capital, LocalGlobe, Seedcamp

Meilisearch
Aug 2022
May 2022

Chroma

Pre-Seed

$2.3M • Investors: AIX Ventures, Bloomberg Beta, AI Grant

Chroma
Mar 2022

Pinecone

Series A

$28M • Investors: Menlo Ventures, Tiger Global, Wing Venture Capital

Pinecone
Feb 2022

Weaviate

Series A

$16M • Investors: New Enterprise Associates, Cortical Ventures, Zetta Venture Partners, ING Ventures

PR Newswire
Jan 2022

Meilisearch

Seed

$5M • Investors: CRV, Robin Vasan, Mango Capital, Guillermo Rauch, LocalGlobe, Seedcamp

Meilisearch
Jan 2021

Pinecone

Seed

$10M • Investors: Wing Venture Capital

Pinecone
Nov 2020
Aug 2020

Meilisearch

Seed

EUR 1.5M • Investors: LocalGlobe, Seedcamp, Kima, Tiny.vc

Meilisearch

Weaviate

Seed

$1.6M • Investors: Zetta Venture Partners, ING Ventures

PR Newswire
Jun 2018

Cradl AI

Seed

NOK 5M • Investors: Finstart Nordic

Nordic9
Jan 2018

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