# AI Training Data Europe Market Map 2026: 13 Startups in 3 Segments > 13 European AI training data startups mapped in 3 segments: synthetic data, expert and human feedback and labeling platforms and more. Source: https://millionrounds.com/market-maps/ai-training-data-europe-market-map (Millionrounds; every figure on the page links to its filing or article) ## Synthetic data 6 - [MOSTLY AI](https://millionrounds.com/company/mostly-ai) - [SKY ENGINE AI](https://millionrounds.com/company/sky-engine-ai) - [ANYVERSE](https://millionrounds.com/company/anyverse) - [BlueGen.ai](https://millionrounds.com/company/bluegen-ai) - [Repli5](https://millionrounds.com/company/repli5) - [Dedomena AI](https://millionrounds.com/company/dedomena-ai) ## Expert and human feedback 4 - [Arlequin AI](https://millionrounds.com/company/arlequin-ai) - [Rapidata](https://millionrounds.com/company/rapidata) - [Definigen](https://millionrounds.com/company/definigen) - [Poindexter Labs](https://millionrounds.com/company/poindexter-labs) ## Labeling platforms 3 - [ScaleHub](https://millionrounds.com/company/scalehub) - [Epinote](https://millionrounds.com/company/epinote) - [Aya Data](https://millionrounds.com/company/aya-data) ## Segment by segment ### Synthetic data 6 startups · $34M raised - [**MOSTLY AI**](https://millionrounds.com/company/mostly-ai) MOSTLY AI is a leader in creating high-fidelity, privacy-safe structured synthetic data using Generative AI. Austria $25M - [**SKY ENGINE AI**](https://millionrounds.com/company/sky-engine-ai) SKY ENGINE AI is a London-based data science and technology company founded in 2018. United Kingdom $7.0M - [**ANYVERSE**](https://millionrounds.com/company/anyverse) Anyverse is a deep-tech company based in Madrid, Spain, specializing in physics-based hyperspectral synthetic data generation. Spain $972K - [**BlueGen.ai**](https://millionrounds.com/company/bluegen-ai) BlueGen.ai is a Dutch technology company founded in 2022, specializing in an AI-based synthetic data generation platform. Netherlands $378K - [**Repli5**](https://millionrounds.com/company/repli5) Repli5 is a Swedish deep-tech startup located in Göteborg, specializing in generating synthetic training data for computer vision Sweden $179K - [**Dedomena AI**](https://millionrounds.com/company/dedomena-ai) Dedomena.AI is a technology company based in Rivas-Vaciamadrid, Madrid, Spain, specializing in Artificial Intelligence (AI) and Data Science. Spain $109K ### Expert and human feedback 4 startups · $57M raised - [**Arlequin AI**](https://millionrounds.com/company/arlequin-ai) Arlequin AI is a deep-tech startup based in Paris, founded in 2024. France $38M - [**Rapidata**](https://millionrounds.com/company/rapidata) Rapidata is a Zurich-based AI infrastructure company that offers a scalable, on-demand data labeling platform. Switzerland $8.5M - [**Definigen**](https://millionrounds.com/company/definigen) Generating pre-clinical human data for therapeutic candidates with in-vitro liver and metabolic disease models. United Kingdom $7.9M - [**Poindexter Labs**](https://millionrounds.com/company/poindexter-labs) Poindexter Labs is a London-based AI data company that specializes in generating expert-created STEM training data for frontier AI models. United Kingdom $2.7M ### Labeling platforms 3 startups · $11M raised - [**ScaleHub**](https://millionrounds.com/company/scalehub) AI & HI for better data - at infinite scale, Managed Service, CrowdSourcing/Collective Intelligence Services for Data Entry & Data Germany $8.0M - [**Epinote**](https://millionrounds.com/company/epinote) Epinote is Warsaw-based annotation boutique that provides high quality data annotation and collection services. Poland $1.5M - [**Aya Data**](https://millionrounds.com/company/aya-data) Aya Data is a UK-Ghana-based artificial intelligence and data services company founded in 2021 by Freddie Monk and Ama Larbi-Siaw. United Kingdom $1.5M **How this map is made.** Every startup here has raised money in rounds we track, and is based in Europe. It joins the map when its sectors, read from its rounds, or the opening of its own description say it works in AI training data, and goes to the first segment whose words it carries. Each segment shows its best-funded first. Rebuilt nightly; updated 15 November 2026. ## More market maps [All maps](https://millionrounds.com/market-maps) [Market map **AI training data market map** 44 startups · 4 segments · $547M](https://millionrounds.com/market-maps/ai-training-data-market-map)[Market map · United States **AI training data market map: United States** 25 startups · 3 segments · $424M](https://millionrounds.com/market-maps/ai-training-data-united-states-market-map)[New wave **New AI training data startups, founded 2020 on** 13 startups · 3 segments · $46M](https://millionrounds.com/market-maps/new-ai-training-data-startups-market-map)[Market map · San Francisco **AI training data market map: San Francisco** 11 startups · 3 segments · $309M](https://millionrounds.com/market-maps/ai-training-data-san-francisco-market-map)[Market map · Europe **Fintech market map: Europe** 409 startups · 8 segments · $35B](https://millionrounds.com/market-maps/fintech-europe-market-map)[Market map · Europe **Edtech market map: Europe** 247 startups · 7 segments · $1.7B](https://millionrounds.com/market-maps/edtech-europe-market-map) ## Who backs AI training data? Open any company for its rounds and investors, or search the investors behind these startups in the app, with filters, lists and exports. [Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[Top lists](https://millionrounds.com/top-lists)