# Defined.ai alternatives for AI training datasets

URL: https://sellmydatatoai.net/alternatives/defined-ai
Updated: 2026-11-08

The alternatives to Defined.ai on this page are Linguistic Data Consortium, Opendatabay, Datarade, FileYield, Shutterstock data licensing, Appen and Sell My Data To AI. Each sells, licenses or lists ready-made training data, as Defined.ai's marketplace does. Each entry copies its facts from our profile of that company, checked in November 2026, and the order is not a ranking.

> Sell My Data To AI wrote this page and is listed as one of the alternatives. We are a broker with a commercial interest in your choice. Entries are not ranked, and we describe ourselves only with the commitments on our [fees](https://sellmydatatoai.net/fees) and [how we vet](https://sellmydatatoai.net/how-we-vet) pages.

## Key takeaways

- Defined.ai is a data marketplace. Its published payout: Not published.
- This page lists 7 alternatives to Defined.ai: Linguistic Data Consortium, Opendatabay, Datarade, FileYield, Shutterstock data licensing, Appen and Sell My Data To AI.
- Opendatabay, Datarade and FileYield publish a payout figure or pricing rule on their own pages.
- Appen states that the seller pays no fee.
- Sell My Data To AI wrote this page and is one of the alternatives listed.

## 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.

Profile: https://sellmydatatoai.net/data-buyers/defined-ai

## How the alternatives compare

"Not published" means the company's own pages do not say.

| Company | Type | Published payout | Size requirement | Exclusivity | Fee to seller |
| --- | --- | --- | --- | --- | --- |
| [Defined.ai](https://sellmydatatoai.net/data-buyers/defined-ai) | Data marketplace | Not published | Not published. Partners pass an ethical vetting process, and Defined.ai says 30% are approved | Not published | Not published |
| [Linguistic Data Consortium](https://sellmydatatoai.net/data-buyers/linguistic-data-consortium) | Data marketplace | Not published. Its data sharing guide does not mention royalties or payments to providers | None published. Providers supply ownership and copyright information, a sample and documentation for LDC review | Non-exclusive. LDC does not require exclusive distribution rights | Not published |
| [Opendatabay](https://sellmydatatoai.net/data-buyers/opendatabay) | Data marketplace | Seller sets the price and keeps 70% to 95% depending on the sale price | Not published | Not published | Free to list. Commission from 30% (sales up to $100) to 5% (sales above $250,000), set per transaction |
| [Datarade](https://sellmydatatoai.net/data-buyers/datarade) | Data marketplace | Provider sets the price | None published. Applications reviewed in 1 to 2 business days | Not published | Commission-only: $0 a year plus 30%. Bronze: $6,000 a year plus 20%. Silver: $12,000 a year plus 15%. Gold: custom |
| [FileYield](https://sellmydatatoai.net/data-buyers/fileyield) | Data marketplace | Seller sets the price | Not published. Listings are reviewed before going live | Seller chooses: exclusive or non-exclusive, time-limited or perpetual | Free to list. Any facilitation fees are disclosed when you list, request or accept a deal |
| [Shutterstock data licensing](https://sellmydatatoai.net/data-buyers/shutterstock-data-licensing) | Content licensing platform | Not published. Contributor compensation is not described on the data licensing page | Not applicable | Not published | Not published |
| [Appen](https://sellmydatatoai.net/data-buyers/appen) | Training-data company | Not published. Each partnership is quoted individually, based on volume, connected systems, workflow complexity and rarity | Not published. Appen responds to registrations within two business days | Not published. Appen says your data is never commingled with another partner's | None. Appen covers extraction, anonymization, preparation and transfer, with no setup fees or deductions |

## The alternatives

### 1. Linguistic Data Consortium

Type: Data marketplace
Best for: speech and text corpora distributed to members and licensees on non-exclusive terms
Website: https://www.ldc.upenn.edu/
Profile: https://sellmydatatoai.net/data-buyers/linguistic-data-consortium

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

### 2. Opendatabay

Type: Data marketplace
Best for: dataset sellers who want free listing and a commission that falls as the sale price rises
Website: https://www.opendatabay.com/
Profile: https://sellmydatatoai.net/data-buyers/opendatabay

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

### 3. Datarade

Type: Data marketplace
Best for: data providers who want buyers to find and compare their products in a large directory
Website: https://datarade.ai/
Profile: https://sellmydatatoai.net/data-buyers/datarade

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

### 4. FileYield

Type: Data marketplace
Best for: sellers who want to list free and negotiate price and exclusivity directly with buyers
Website: https://www.fileyield.com/
Profile: https://sellmydatatoai.net/data-buyers/fileyield

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

### 5. Shutterstock data licensing

Type: Content licensing platform
Best for: AI developers licensing large image, video, music and 3D libraries
Website: https://www.shutterstock.com/data-licensing
Profile: https://sellmydatatoai.net/data-buyers/shutterstock-data-licensing

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

### 6. Appen

Type: Training-data company
Best for: enterprises with support, ITSM, CRM or ERP records that want extraction handled at no cost
Website: https://www.appen.com/enterprise-data
Profile: https://sellmydatatoai.net/data-buyers/appen

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

### 7. Sell My Data To AI

Type: Independent broker (this site)
Best for: AI teams that want sellers vetted before any buyer sees their data
Service: https://sellmydatatoai.net/buy-ai-training-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.

## Frequently asked questions

### What are the alternatives to Defined.ai?

The alternatives to Defined.ai on this page are Linguistic Data Consortium, Opendatabay, Datarade, FileYield, Shutterstock data licensing, Appen and Sell My Data To AI. Each sells, licenses or lists ready-made training data, as Defined.ai's marketplace does. Facts for each company come from our profile of it, checked on its own pages in November 2026. Sell My Data To AI, which wrote this page, is one of the entries.

### Which Defined.ai alternatives publish a payout?

Of the Defined.ai alternatives profiled here, Opendatabay, Datarade and FileYield publish a payout figure or pricing rule on their own pages. Linguistic Data Consortium, Shutterstock data licensing and Appen do not publish one. Defined.ai's own published payout: Not published. Published figures are ceilings or estimates, not offers.

### Which Defined.ai alternatives state that sellers pay no fee?

Among the Defined.ai alternatives profiled here, Appen states that the seller pays no fee. The others charge a fee, commission or percentage, or do not publish their fee to seller, and the table on this page shows each one. Defined.ai's own fee to seller: Not published.

### How were these Defined.ai alternatives chosen?

These Defined.ai alternatives are companies of the same kind as Defined.ai or with an overlapping use, chosen only from the 61 profiles in our [data buyers directory](https://sellmydatatoai.net/data-buyers). The order is not a ranking. Where a company does not publish a term, we write "Not published" rather than guess. Sell My Data To AI wrote this page and lists itself last.

## Sources

- [Defined.ai homepage](https://defined.ai/), Defined.ai, accessed November 2026
- [AI marketplace partnerships](https://defined.ai/partnerships), Defined.ai, accessed November 2026
- [LDC overview](https://www.ldc.upenn.edu/node/16), Linguistic Data Consortium, accessed November 2026
- [Membership benefits](https://www.ldc.upenn.edu/node/34), Linguistic Data Consortium, accessed November 2026
- [Share your data with LDC](https://www.ldc.upenn.edu/sites/default/files/share-data-2023.pdf), Linguistic Data Consortium, accessed November 2026
- [LDC catalog](https://catalog.ldc.upenn.edu/), Linguistic Data Consortium, accessed November 2026
- [Opendatabay homepage](https://www.opendatabay.com/), Opendatabay, accessed November 2026
- [Fees and pricing](https://www.opendatabay.com/legal/fees), Opendatabay, accessed November 2026
- [Datarade homepage](https://datarade.ai/), Datarade, accessed November 2026
- [Apply as a data provider](https://providers.datarade.ai/apply), Datarade, accessed November 2026
- [FileYield homepage](https://www.fileyield.com/), FileYield, accessed November 2026
- [How it works](https://www.fileyield.com/how-it-works), FileYield, accessed November 2026
- [Terms of service](https://www.fileyield.com/terms), FileYield, accessed November 2026
- [Data licensing](https://www.shutterstock.com/data-licensing), Shutterstock, accessed November 2026
- [Shutterstock expands deal with OpenAI to build generative AI tools](https://techcrunch.com/2023/07/11/shutterstock-expands-deal-with-openai-to-build-generative-ai-tools), TechCrunch, accessed November 2026
- [Enterprise data to advance frontier AI](https://www.appen.com/enterprise-data), Appen, accessed November 2026
- [Data catalog](https://www.appen.com/data-catalog), Appen, accessed November 2026
- [Appen homepage](https://www.appen.com/), Appen, accessed November 2026

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