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Opendatabay
7 Hungate, Beccles, NR34 9TT, United Kingdom
What it is
Opendatabay is a marketplace for buying and selling datasets intended for AI and large language model use. Its listings include text, image, audio, video, code, agentic trajectories, 3D spatial, tabular, time-series, human feedback and synthetic data. The platform describes its search and recommendations as AI-powered. It says datasets are curated and labelled for model training or fine-tuning, and that this can reduce preprocessing time by 20–40%. Buyers receive licensing terms and provenance information; the company says sellers undergo verification and due diligence. Both free and paid data products are available. Listing is free, while self-serve sales carry a commission from 30% for sales of $1–$100 to 5% for sales of $250,001 and above. Registered users who complete onboarding can download evaluation samples, but using them for production, commercial purposes, model training or redistribution requires separate permission. The marketplace is available on the web and through an API. Opendatabay Ltd. identifies its registered office as being in Beccles, United Kingdom.
For and against
For
- Catalogue spans text, image, audio, video and other data.
- Search and recommendations are AI-powered.
- Listings provide licensing terms and provenance information.
- Listing is free.
- Free and paid data products are available.
Against
- Self-serve sales incur platform commissions.
- Provider registration is limited to businesses, legal entities or institutions.
- Evaluation samples require separate permission for production or commercial use.
The verdict
Opendatabay brings dataset listings, licensing information and evaluation samples together in a web and API marketplace. Sellers can list at no charge, while self-serve sales carry commissions and sample use has stated restrictions.
Who it suits
It suits individuals, researchers and enterprises looking to buy or sell datasets for AI and language model work. Businesses, legal entities and institutions are the eligible data providers.
Plans and prices
Data listing
Listing is free · paid data products are priced by the provider · platform commission applies to self-serve sales, API calls, and data access fees
Read 9 Oct 2026 · opendatabay.com
On the record
- AI tools
- The documentation says the platform uses AI-powered search and recommendations to help users find datasets.docs.opendatabay.com · read 9 Oct 2026
- Company
- The site identifies the company as Opendatabay Ltd., registered in England and Wales, with a registered office in Beccles, United Kingdom.opendatabay.com · read 9 Oct 2026
- Data preparation
- The documentation describes datasets as pre-curated, labelled, and ready for model training or fine-tuning, and says this can reduce preprocessing time by 20–40%.docs.opendatabay.com · read 9 Oct 2026
- Dataset types
- The marketplace lists text, image, audio, video, code, agentic trajectories, 3D spatial, tabular, time-series, human feedback, and synthetic data.opendatabay.com · read 9 Oct 2026
- Free data
- The terms say the marketplace offers data products marked Free or priced at 0, as well as paid products.opendatabay.com · read 9 Oct 2026
- Integrations and partners
- The maker lists IBM, APPG AI, Palantir, Barclays Eagle Labs, Microsoft, Google, the Linux Foundation, HubSpot, and Auth0 among partners or supporters.opendatabay.com · read 9 Oct 2026
- Licensing and verification
- The company says datasets undergo seller verification and due diligence, with licensing terms and provenance information provided for buyers.opendatabay.com · read 9 Oct 2026
- Payout threshold
- Self-serve sale payouts are made within 30 days after month-end when the seller balance is at least $50; smaller balances carry forward.opendatabay.com · read 9 Oct 2026
- Privacy and payments
- The terms say payments are processed through secure payment processors and Opendatabay does not store payment card details.opendatabay.com · read 9 Oct 2026
- Provider eligibility
- Only registered businesses, legal entities, or institutions may register as data providers, and proof of business identity may be required.opendatabay.com · read 9 Oct 2026
- Refund limits
- The terms say refunds are unavailable for one-off purchases of digital products or services once access has been granted.opendatabay.com · read 9 Oct 2026
- Samples
- Registered users who have completed onboarding can download samples for evaluation, but samples cannot be used for production, commercial use, model training, or redistribution without a separate licence or purchase agreement.opendatabay.com · read 9 Oct 2026
- Seller fees
- Listing is free; self-serve sale commissions range from 30% on sales of $1–$100 to 5% on sales of $250,001 and above.opendatabay.com · read 9 Oct 2026
- Support
- The maker directs users to contact [email protected] for support and queries.opendatabay.com · read 9 Oct 2026
- What it does
- Opendatabay is a brokerage and licensing marketplace where individuals, researchers, and enterprises can buy and sell datasets for AI and LLM use.opendatabay.com · read 9 Oct 2026
