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SPECIFICTION
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Opendatabay

opendatabay.com

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Spec score 7.5 #13 of 27 in Data Marketplace Software

What it is

Opendatabay is a marketplace for buying and selling datasets intended for AI and large language model use. Its listings span text, image, audio, video, code, agentic trajectories, 3D spatial, tabular, time-series, human feedback, and synthetic data. The documentation describes AI-powered search and recommendations, and says datasets are curated and labelled for model training or fine-tuning, with a claimed 20–40% reduction in preprocessing time. Buyers receive licensing terms and provenance information; the company says sellers undergo verification and due diligence. Both free and paid data products are offered, with provider-set prices for paid items. Sellers can list for free, while self-serve sales incur commissions ranging from 30% on sales of $1–$100 to 5% on sales of $250,001 and above. Registered users who complete onboarding can download evaluation samples, but production, commercial use, model training, and redistribution require a separate license or purchase agreement. The service is available on web and through an API. Only registered businesses, legal entities, or institutions may register as providers, and proof of business identity may be required.

Spec sheet

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.Read 9 Oct 2026 · opendatabay.com
Support
The maker directs users to contact [email protected] for support and queries.Read 9 Oct 2026 · opendatabay.com
Headquarters
7 Hungate, Beccles, NR34 9TT, United KingdomRead 28 Sep 2026 · opendatabay.com
Company
The site identifies the company as Opendatabay Ltd., registered in England and Wales, with a registered office in Beccles, United Kingdom.Read 9 Oct 2026 · opendatabay.com
AI tools
The documentation says the platform uses AI-powered search and recommendations to help users find datasets.Read 9 Oct 2026 · docs.opendatabay.com
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%.Read 9 Oct 2026 · docs.opendatabay.com
Dataset types
The marketplace lists text, image, audio, video, code, agentic trajectories, 3D spatial, tabular, time-series, human feedback, and synthetic data.Read 9 Oct 2026 · opendatabay.com
Free data
The terms say the marketplace offers data products marked Free or priced at 0, as well as paid products.Read 9 Oct 2026 · opendatabay.com
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.Read 9 Oct 2026 · opendatabay.com
Licensing and verification
The company says datasets undergo seller verification and due diligence, with licensing terms and provenance information provided for buyers.Read 9 Oct 2026 · opendatabay.com
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.Read 9 Oct 2026 · opendatabay.com
Privacy and payments
The terms say payments are processed through secure payment processors and Opendatabay does not store payment card details.Read 9 Oct 2026 · opendatabay.com
Provider eligibility
Only registered businesses, legal entities, or institutions may register as data providers, and proof of business identity may be required.Read 9 Oct 2026 · opendatabay.com
Refund limits
The terms say refunds are unavailable for one-off purchases of digital products or services once access has been granted.Read 9 Oct 2026 · opendatabay.com
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.Read 9 Oct 2026 · opendatabay.com
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.Read 9 Oct 2026 · opendatabay.com

Plans and prices

Data listing Free 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

Every Opendatabay plan and price →

Strong points and limits

Strong points

  • Catalogue covers many data types.
  • Listing is free.
  • Buyers receive licensing and provenance information.
  • Free and paid data products are available.

Limits

  • Self-serve sales carry platform commissions.
  • Provider registration is limited to businesses, entities, or institutions.
  • Evaluation samples have restricted uses.
  • Refunds are unavailable after access to one-off digital purchases.

Who it suits

It suits individuals, researchers, and enterprises seeking datasets for AI or LLM work, as well as eligible organizations selling data. Sellers should account for commissions and the stated payout threshold of $50.

Verdict

Opendatabay supports dataset discovery and transactions across a broad range of data types, with licensing and provenance information for buyers. Sellers can list without charge, but commissions apply to self-serve sales and provider registration is restricted to organizations.

Where Specifiction places it

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