Data marketplace
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.
Facts checked against Opendatabay's own pages in November 2026. Visit Opendatabay
At a glance
- 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
Key takeaways
- Opendatabay is a data marketplace.
- 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.
- 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.
- Opendatabay does not publish its size requirement and exclusivity.
- Facts checked on Opendatabay's own pages in November 2026.
What is Opendatabay?
Opendatabay is a marketplace where verified providers buy, sell or exchange AI-ready datasets. Its homepage lists data types from text, image and audio to agentic trajectories, human feedback and synthetic data, and categories including enterprise and company data, healthcare, and software engineering and code. It names Microsoft for Startups, Google for AI Startups and Innovate UK Business Growth among its supporters.
What does Opendatabay charge sellers?
Opendatabay charges nothing to list and takes a commission on each sale, set progressively within each band and applied to the individual transaction, not cumulative sales.
| Sale price | Opendatabay fee | Seller receives |
|---|---|---|
| $1 to $100 | 30% | 70% |
| $101 to $1,000 | 30% falling to 25% | 70% rising to 75% |
| $1,001 to $10,000 | 25% falling to 20% | 75% rising to 80% |
| $10,001 to $25,000 | 20% falling to 15% | 80% rising to 85% |
| $25,001 to $50,000 | 15% falling to 10% | 85% rising to 90% |
| $50,001 to $250,000 | 10% falling to 5% | 90% rising to 95% |
| $250,001 and above | 5% | 95% |
Payouts for self-serve sales go to your verified business account within 30 days of the end of the month. Balances below $50 carry forward, and refunds or chargebacks reverse the related payout.
Who is Opendatabay a good fit for?
Opendatabay suits sellers with a packaged, repeatable dataset they can price themselves and sell to many buyers. Sellers of a single sensitive company archive usually need more vetting and negotiation than a self-serve listing gives, which our comparison of marketplaces, brokers and direct deals explains.
Comparing buyers?
Published payouts are ceilings, not quotes. We can put your records in front of several vetted buyers and compare offers on the same terms. Get a free valuation.
Sources
- Opendatabay homepage, Opendatabay, accessed November 2026
- Fees and pricing, Opendatabay, accessed November 2026
Other data marketplaces
For data owners
Ready to see what buyers will offer?
Book a consultation and we will scope your data, explain our fee in writing and set out the steps to competing offers from vetted buyers.
Opendatabay is listed for reference. We are independent and this page is not an endorsement. If anything here is out of date, email hello@sellmydatatoai.net and we will correct it.