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Defined.ai

Ethically sourced training data and annotation.

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Coding & WebPaidWe checked the prices on defined.ai on 28 Sep 2026.

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What is Defined.ai?

Ethically sourced training data and annotation.

Who is Defined.ai best for?

Defined.ai is best for enterprise AI teams that need licensed speech, text, image or video training data, or help with annotation.

  • Speech and conversational AI teams

    The marketplace sells call-center, doctor-patient and other speech datasets in many languages, and can package subsets by age, gender or accent.

  • Regulated industries

    ISO 27001, 27701 and 42001 accreditation plus GDPR and HIPAA compliance suit buyers who must document where their data came from.

  • Custom data projects

    A crowd of more than 1.6 million contributors in over 150 countries collects and annotates custom speech, image and video data.

  • Academic researchers

    Academic buyers can get datasets at a large discount or free, through a promo code issued after a review.

How much does Defined.ai cost?

Defined.ai does not publish prices: its datasets and data services are sold by quote, with free downloadable samples to check a dataset before buying, and no free plan or trial.

Each marketplace dataset page offers Get a quote and Request a Sample with no price shown, and the FAQ adds volume discounts, payment in US dollars by ACH bank transfer, and no refunds. Custom collection, annotation and evaluation services go through Speak to a data expert. Plans and current prices are on defined.ai.

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What are the best Defined.ai alternatives?

Three tools on Recaply do Defined.ai's job.

Questions about Defined.ai

What is Defined.ai?

Ethically sourced training data and annotation.

Who is Defined.ai for?

Defined.ai is best for enterprise AI teams that need licensed speech, text, image or video training data, or help with annotation.

Is Defined.ai free?

No. Defined.ai is a paid tool.

What are the best Defined.ai alternatives?

The closest alternatives on Recaply are Appen, GTS.ai and Sama.

Where can I try Defined.ai?

On its official website, defined.ai.

Can I try a Defined.ai dataset before buying?

Yes. Defined.ai lets you download a free sample of a marketplace dataset, built the same way as the full set apart from some metadata. Since it gives no refunds, the sample is the way to check a dataset before paying.