# AI Training Data Market Map United States 2026: 25 Startups in 3 Segments > 25 AI training data startups in the United States, mapped in 3 segments: labeling platforms, synthetic data and expert and human feedback and more. Source: https://millionrounds.com/market-maps/ai-training-data-united-states-market-map (Millionrounds; every figure on the page links to its filing or article) ## Labeling platforms 11 - [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) - [Datasaur](https://millionrounds.com/company/datasaur) - [besimple AI](https://millionrounds.com/company/besimple-ai) - [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) ## Synthetic data 9 - [Tonic.ai](https://millionrounds.com/company/tonic-ai) - [Parallel Domain](https://millionrounds.com/company/parallel-domain) - [Invisibly](https://millionrounds.com/company/invisibly) - [K2View](https://millionrounds.com/company/k2view) - [Rendered.ai](https://millionrounds.com/company/rendered-ai) - [Secludy](https://millionrounds.com/company/secludy) - [Lexset](https://millionrounds.com/company/lexset) - [Loko AI](https://millionrounds.com/company/loko-ai) - [Synthesis AI](https://millionrounds.com/company/synthesis-ai) ## Expert and human feedback 5 - [Human Archive](https://millionrounds.com/company/human-archive) - [Origin Lab](https://millionrounds.com/company/origin-lab) - [Pareto AI](https://millionrounds.com/company/pareto-ai) - [Feedback Intelligence](https://millionrounds.com/company/feedback-intelligence) - [Fixpoint](https://millionrounds.com/company/fixpoint) ## Segment by segment ### Labeling platforms 11 startups · $289M 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 - [**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 - [**TranscribeMe**](https://millionrounds.com/company/transcribeme) TranscribeMe is a global technology company that specializes in high-accuracy speech-to-text transcription, translation, and data United States $1.4M ### Synthetic data 9 startups · $112M 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 - [**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 - [**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 - [**Secludy**](https://millionrounds.com/company/secludy) Privacy-guaranteed synthetic data for training AI models United States $4.0M - [**Lexset**](https://millionrounds.com/company/lexset) Lexset is an AI company based in Brooklyn, New York, specializing in synthetic data, computer vision, and trusted intelligence systems. United States $1.0M - [**Loko AI**](https://millionrounds.com/company/loko-ai) Synthetic Data & Computer Vision United States $1.0M ### Expert and human feedback 5 startups · $22M raised - [**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 - [**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 - [**Feedback Intelligence**](https://millionrounds.com/company/feedback-intelligence) Feedback Intelligence is the next-gen RLHF for enterprise LLMs. United States $900K - [**Fixpoint**](https://millionrounds.com/company/fixpoint) Fixpoint helps AI training data companies hire the expert humans that create AI training data. United States $500K **How this map is made.** Every startup here has raised money in rounds we track, and is based in United States. 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 · Europe **AI training data market map: Europe** 13 startups · 3 segments · $101M](https://millionrounds.com/market-maps/ai-training-data-europe-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 · United States **Defense tech market map: United States** 83 startups · 5 segments · $34B](https://millionrounds.com/market-maps/defense-tech-us-market-map)[Ecosystem map · United States **United States startup ecosystem map** 24,816 startups · 12 sectors · $1.6T](https://millionrounds.com/market-maps/united-states-startup-ecosystem-map) ## Who backs AI training data? 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