# AI Training Data Market Map 2026: 44 Startups in 4 Segments > Market map of 44 AI training data startups worldwide in 4 segments, from synthetic data, labeling platforms and expert and human feedback on. Source: https://millionrounds.com/market-maps/ai-training-data-market-map (Millionrounds; every figure on the page links to its filing or article) ## Synthetic data 18 - [Tonic.ai](https://millionrounds.com/company/tonic-ai) - [Parallel Domain](https://millionrounds.com/company/parallel-domain) - [MOSTLY AI](https://millionrounds.com/company/mostly-ai) - [Invisibly](https://millionrounds.com/company/invisibly) - [K2View](https://millionrounds.com/company/k2view) - [*G* GenGenAI](https://millionrounds.com/company/gengenai) - [SKY ENGINE AI](https://millionrounds.com/company/sky-engine-ai) - [Rendered.ai](https://millionrounds.com/company/rendered-ai) - [Secludy](https://millionrounds.com/company/secludy) - [zypl.ai](https://millionrounds.com/company/zypl-ai) - [Lexset](https://millionrounds.com/company/lexset) - [Loko AI](https://millionrounds.com/company/loko-ai) - [ANYVERSE](https://millionrounds.com/company/anyverse) - [BlueGen.ai](https://millionrounds.com/company/bluegen-ai) - [Sim2real](https://millionrounds.com/company/sim2real) - [Repli5](https://millionrounds.com/company/repli5) - [Synthesis AI](https://millionrounds.com/company/synthesis-ai) - [Dedomena AI](https://millionrounds.com/company/dedomena-ai) ## Labeling platforms 14 - [Labelbox](https://millionrounds.com/company/labelbox) - [Centaur Labs](https://millionrounds.com/company/centaur-labs) - [Alegion](https://millionrounds.com/company/alegion) - [Mighty AI](https://millionrounds.com/company/mighty-ai) - [Sapien](https://millionrounds.com/company/sapien) - [ScaleHub](https://millionrounds.com/company/scalehub) - [Datasaur](https://millionrounds.com/company/datasaur) - [besimple AI](https://millionrounds.com/company/besimple-ai) - [Epinote](https://millionrounds.com/company/epinote) - [Aya Data](https://millionrounds.com/company/aya-data) - [TranscribeMe](https://millionrounds.com/company/transcribeme) - [BabylonAI](https://millionrounds.com/company/babylonai) - [Ango AI](https://millionrounds.com/company/ango-ai) - [LinkedAI](https://millionrounds.com/company/linkedai) ## Expert and human feedback 9 - [Arlequin AI](https://millionrounds.com/company/arlequin-ai) - [Rapidata](https://millionrounds.com/company/rapidata) - [Human Archive](https://millionrounds.com/company/human-archive) - [Origin Lab](https://millionrounds.com/company/origin-lab) - [Definigen](https://millionrounds.com/company/definigen) - [Pareto AI](https://millionrounds.com/company/pareto-ai) - [Poindexter Labs](https://millionrounds.com/company/poindexter-labs) - [Feedback Intelligence](https://millionrounds.com/company/feedback-intelligence) - [Fixpoint](https://millionrounds.com/company/fixpoint) ## Data licensing and marketplaces 3 - [Vanguard Defense](https://millionrounds.com/company/vanguard-defense) - [Kled AI](https://millionrounds.com/company/kled-ai) - [Co-one](https://millionrounds.com/company/co-one) ## Segment by segment ### Synthetic data 18 startups · $158M raised - [**Tonic.ai**](https://millionrounds.com/company/tonic-ai) Tonic.ai is a technology company based in San Francisco, specializing in AI-driven synthetic data solutions. United States $35M - [**Parallel Domain**](https://millionrounds.com/company/parallel-domain) Parallel Domain is a San Francisco-based company founded in 2017 that specializes in synthetic data and sensor simulation for auto United States $30M - [**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 - [**Invisibly**](https://millionrounds.com/company/invisibly) Invisibly is a technology company based in St. United States $20M - [**K2View**](https://millionrounds.com/company/k2view) K2view Data Platform: AI-ready, protected, complete data instantly. United States $15M - [*G* **GenGenAI**](https://millionrounds.com/company/gengenai) GenGenAI develops synthetic data generation technologydesigned to advance AI learning. - $8.3M - [**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 - [**Rendered.ai**](https://millionrounds.com/company/rendered-ai) Rendered.ai is a Seattle-based Platform-as-a-Service (PaaS) company founded in 2019. United States $6.0M ### Labeling platforms 14 startups · $300M raised - [**Labelbox**](https://millionrounds.com/company/labelbox) Labelbox is a data-centric AI company based in San Francisco, founded in 2018. United States $224M - [**Centaur Labs**](https://millionrounds.com/company/centaur-labs) Centaur Labs is a medical AI platform that offers medical data labeling services. United States $16M - [**Alegion**](https://millionrounds.com/company/alegion) Alegion is a technology company based in Austin, Texas, that offers a fully managed AI training data platform and comprehensive se United States $16M - [**Mighty AI**](https://millionrounds.com/company/mighty-ai) Mighty AI is a Seattle-based AI platform developer founded in 2014. United States $14M - [**Sapien**](https://millionrounds.com/company/sapien) Sapien, also known as Sapien AI Corp., is a decentralized data foundry and Web3 data labeling platform founded in 2023 in San Francisco. United States $8.7M - [**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 - [**Datasaur**](https://millionrounds.com/company/datasaur) Datasaur is a software company based in the San Francisco Bay Area, founded in 2019 by Ivan Lee. United States $4.0M - [**besimple AI**](https://millionrounds.com/company/besimple-ai) Besimple AI is a software company founded in 2025 and backed by Y Combinator. United States $3.0M ### Expert and human feedback 9 startups · $79M 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 - [**Human Archive**](https://millionrounds.com/company/human-archive) Human Archive builds human data archiving platform with comprehensive dataset for training embodied AI and robotics systems. United States $8.2M - [**Origin Lab**](https://millionrounds.com/company/origin-lab) Origin Lab is a technology company based in California that specializes in providing premium, rights-cleared multimodal training d United States $8.0M - [**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 - [**Pareto AI**](https://millionrounds.com/company/pareto-ai) Pareto.AI is a data research partner that specializes in human-centered data collection and expert annotation services for AI companies. United States $4.5M - [**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 - [**Feedback Intelligence**](https://millionrounds.com/company/feedback-intelligence) Feedback Intelligence is the next-gen RLHF for enterprise LLMs. United States $900K ### Data licensing and marketplaces 3 startups · $10M raised - [**Vanguard Defense**](https://millionrounds.com/company/vanguard-defense) Vanguard Defense is a data labeling firm that transforms defense telemetry into AI-ready datasets, which is powered by veterans. United States $6.3M - [**Kled AI**](https://millionrounds.com/company/kled-ai) Kled AI, developed by Nitrility Inc., is a data marketplace and mobile app that allows users to upload photos, videos, and other p United States $3.0M - [**Co-one**](https://millionrounds.com/company/co-one) Co-one is an Estonia-based AI and data platform founded in 2021. Estonia $1.1M **How this map is made.** Every startup here has raised money in rounds we track. 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) [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 · 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)[Market map · Europe **AI training data market map: Europe** 13 startups · 3 segments · $101M](https://millionrounds.com/market-maps/ai-training-data-europe-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 **Marketing tech market map** 1,963 startups · 7 segments · $41B](https://millionrounds.com/market-maps/marketing-tech-market-map)[Market map **Fintech market map** 1,633 startups · 8 segments · $139B](https://millionrounds.com/market-maps/fintech-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)