Defined.ai alternatives for AI training datasets

About Defined.ai

Defined.ai runs an AI data marketplace where enterprises buy or commission speech, text, image, video and multimodal training data, and where vetted partners can sell datasets. Its partnerships page says partners pass an ethical vetting process and only 30% are approved, and it does not publish revenue share, commission, exclusivity or payment timing for sellers.

Read our Defined.ai profile

How do the Defined.ai alternatives compare?

The Defined.ai alternatives below are compared with Defined.ai on the terms our directory tracks. "Not published" means the company's own pages do not say.

The first row is Defined.ai. Published payouts are ceilings or estimates, not quotes.

The Defined.ai alternatives

1. Data marketplace

   Linguistic Data Consortium

   Best for speech and text corpora distributed to members and licensees on non-exclusive terms

   The Linguistic Data Consortium (LDC) is a University of Pennsylvania organization, founded in the early 1990s, that creates, collects and distributes language corpora to members and licensees. Data providers can submit corpora for publication in its catalog without granting exclusive rights. LDC says for-profit members keep commercial rights to data acquired during membership, and it publishes no payment terms for providers.

   What it buys

   Distributes speech, text and other language corpora, its own and contributed by data providers

   Published payout

   Not published. Its data sharing guide does not mention royalties or payments to providers

   Size requirement

   None published. Providers supply ownership and copyright information, a sample and documentation for LDC review

   Exclusivity

   Non-exclusive. LDC does not require exclusive distribution rights

   Fee to seller

   Not published

   Payment timing

   Not published

   Read our Linguistic Data Consortium profile

2. Data marketplace

   Opendatabay

   Best for dataset sellers who want free listing and a commission that falls as the sale price rises

   Opendatabay is a marketplace for licensed AI training and fine-tuning datasets, showing 111 licensed data providers and 655 data products on its homepage. Listing is free, its published commission falls from 30% on small sales to 5% on sales above $250,000, and payouts for self-serve sales arrive within 30 days of the end of the month.

   What it buys

   Lists text, image, audio, video, code, agentic trajectories, 3D, tabular, time-series, human feedback and synthetic data

   Published payout

   Seller sets the price and keeps 70% to 95% depending on the sale price

   Size requirement

   Not published

   Exclusivity

   Not published

   Fee to seller

   Free to list. Commission from 30% (sales up to $100) to 5% (sales above $250,000), set per transaction

   Payment timing

   Within 30 days of the end of the month for self-serve sales. Balances under $50 carry forward

   Read our Opendatabay profile

3. Data marketplace

   Datarade

   Best for data providers who want buyers to find and compare their products in a large directory

   Datarade is a data marketplace and directory where buyers find and compare data products from more than 2,000 providers, with AI training datasets among its categories. Buyers use it free. Providers choose a commission-only plan at 30%, or annual subscriptions of $6,000 or $12,000 with commission of 20% or 15%.

   What it buys

   Lists data products across more than 560 categories, including AI training datasets

   Published payout

   Provider sets the price

   Size requirement

   None published. Applications reviewed in 1 to 2 business days

   Exclusivity

   Not published

   Fee to seller

   Commission-only: $0 a year plus 30%. Bronze: $6,000 a year plus 20%. Silver: $12,000 a year plus 15%. Gold: custom

   Payment timing

   Not published

   Read our Datarade profile

4. Data marketplace

   FileYield

   Best for sellers who want to list free and negotiate price and exclusivity directly with buyers

   FileYield, operated by Dployers LLC, is a brokered marketplace where sellers list AI training datasets free and negotiate price, license type and exclusivity directly with buyers. It does not touch the data, process payments or hold escrow. Its terms say any fees for facilitating connections are disclosed when you list, request or accept a deal.

   What it buys

   Lists datasets across 36 categories and 2,566 data types, from structured records to audio, medical imaging, code and video

   Published payout

   Seller sets the price

   Size requirement

   Not published. Listings are reviewed before going live

   Exclusivity

   Seller chooses: exclusive or non-exclusive, time-limited or perpetual

   Fee to seller

   Free to list. Any facilitation fees are disclosed when you list, request or accept a deal

   Payment timing

   Arranged directly between seller and buyer

   Read our FileYield profile

5. Content licensing platform

   Shutterstock data licensing

   Best for AI developers licensing large image, video, music and 3D libraries

   Shutterstock licenses image, video, music and 3D content to AI developers for training, fine-tuning, evaluation and inference. Its data licensing page claims more than 640 million images, 70 million videos, 6 million music tracks and sound effects and 1 million 3D models from more than 3 million contributors. It is a source for AI buyers, not an outlet for company records.

   What it buys

   Does not buy company data. Licenses its own contributor library of images, video, music and 3D to AI developers

   Published payout

   Not published. Contributor compensation is not described on the data licensing page

   Size requirement

   Not applicable

   Exclusivity

   Not published

   Fee to seller

   Not published

   Payment timing

   Not published

   Read our Shutterstock data licensing profile

6. Training-data company

   Appen

   Best for enterprises with support, ITSM, CRM or ERP records that want extraction handled at no cost

   Appen is a training-data company with 30 years in AI data that now licenses permissioned operational data from enterprises to AI labs. Its enterprise data page says Appen covers extraction, anonymization and transfer at no cost to the seller, quotes each partnership individually and pays on acceptance of the data. It also sells 646 off-the-shelf datasets with perpetual, non-exclusive training rights.

   What it buys

   Operational documentation, decision and escalation records from support, ITSM, CRM and messaging tools, and systems of record such as ERP, finance, contracts and procurement

   Published payout

   Not published. Each partnership is quoted individually, based on volume, connected systems, workflow complexity and rarity

   Size requirement

   Not published. Appen responds to registrations within two business days

   Exclusivity

   Not published. Appen says your data is never commingled with another partner's

   Fee to seller

   None. Appen covers extraction, anonymization, preparation and transfer, with no setup fees or deductions

   Payment timing

   On acceptance of the data rather than submission. No number of days published

   Read our Appen profile

7. Independent broker (this site)

   Sell My Data To AI

   Best for AI teams that want sellers vetted before any buyer sees their data

   Sell My Data To AI is an independent broker that helps companies license their data to vetted AI buyers, and helps AI teams source rights-cleared training data from vetted sellers.

   Fee to buyer

   Buyers pay nothing to submit a requirement or review a shortlist. Any fee is agreed in writing before an introduction.

   Seller vetting

   Every seller passes our eight-point vetting standard before any buyer sees their data, covering authority to sign, ownership, contract restrictions, privacy notices, third-party content, de-identification, sample quality and manifest accuracy.

   Data custody

   We do not take custody of your raw data. Buyers see redacted samples under a mutual NDA, and full data moves only after you sign a license directly with the buyer.

   Independence

   We are independent of the buyers we work with. We do not own an AI model and we do not buy data for our own use.

   How we workOur fees

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