Funding and Valuations of AI Training Data Companies

Method and definitions

Company announcements, regulatory filings and reporting by major news outlets, each linked beside its figure. Every row links the publication it is taken from, with the figure as that publication states it; nothing is estimated or converted. Each figure states what it includes beneath it.

Human-data company

A company whose main business is supplying human work to train or evaluate AI models: expert networks, RLHF and evaluation vendors, data-labelling and annotation firms, RL-environment builders and the platforms that recruit for them.

Funding round

A primary sale of equity or convertible notes, as announced. Strategic stakes bought from shareholders, tender offers and acquisitions are listed separately and not added to funding.

Valuation

The valuation the source states for the round: post-money unless it says otherwise.

Stated or reported

Stated: the company, a filing or an investor gives the figure. Reported: an outlet reports it from unnamed sources. The data download says which for every row.

Date

The day the round, stake or deal was announced or closed; the article's date when the source gives no other.

What this data cannot tell you

• Compiled from public sources: an event that was never announced or reported is missing, and private companies' figures are what they or the press stated, not audited.
• A sum of disclosed rounds understates what a company has raised when some rounds were never priced in public.
• Valuations from unnamed sources and rounds in talks may differ from the terms finally agreed.

How the job feeds are read and roles are classified: site methodology. How fresh, complete and consistent the data is, checked every day: data quality and coverage.

Editions

The live report is the dataset as last reviewed; new events are added as they are published. Each complete month is also published as an edition, frozen two days after the month ends, so a figure you cite from an edition never moves.

• Live data (this page)As last reviewed

Cite and reuse

Free to quote, chart and republish under CC BY 4.0 with a link to this page. Live figures change daily: cite a monthly edition for numbers that will read the same later, or keep the access date.

@misc{aitrainingjobs_ai_training_industry_funding_live,
  author = {{AITraining.jobs}},
  title = {Funding and Valuations of AI Training Data Companies (live data, 1 Jan 2024 to 10 Oct 2026)},
  year = {2026},
  howpublished = {\url{https://www.aitraining.run/research/ai-training-industry-funding}},
  note = {Accessed 18 Oct 2026},
}

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