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Test data that field types cannot describe
Names, emails and prices are easy. Support ticket subjects, product reviews, medical specialties or error messages are not: a generic field type gives you Lorem ipsum. Describe what you need, and AI builds a schema with fields and value lists that fit your domain.
Descriptions people use:
- “Support tickets for a SaaS help desk with priority, channel and status”
- “Patients and their appointments at a dental clinic”
- “Orders for an online bookstore with order lines and reviews”
- “IoT temperature sensors in a cold-storage warehouse”
How it works
- Describe the data in your workspace (New → AI data), in a sentence or two.
- AI designs the schema: tables and how they relate, a field type for every column, and realistic value lists where no field type fits.
- Check and adjust anything, as with a template.
- Generate as many rows as your plan allows, in any format, in your browser.
Why the engine still writes the rows
- Fast: a million rows in seconds, not one model call per row.
- Repeatable: the same seed gives the same dataset on any day.
- Private: your generated rows never pass through an AI model.
- Consistent: emails match names, ages match birthdates, children point to real parents.
AI data works in your workspace with a free account. You can save the result, turn it into a mock API, or download it as CSV, JSON, SQL, Excel or another format.
FAQ
Does AI write every row?
No. AI designs the schema: the tables, the fields, the type of each field and value lists for things field types cannot express, like ticket subjects or review texts. The rows are then generated by the RNDGen engine in your browser, fast and repeatable with a seed.
Why not let AI generate all the rows?
Speed, cost and control. A million rows take seconds with the engine instead of thousands of model calls, the same seed gives the same data every time, and your rows never pass through an AI model.
Can I edit what AI made?
Yes. The result is an ordinary schema: rename fields, change ranges, edit value lists, add or remove fields and tables, then save it or download.
How many AI runs do I get?
Free accounts get 5 runs a day and 50 a month. Pro gets 50 a day and 500 a month with longer value lists; Team gets 150 a day and 1,500 a month per person.
What happens to my description?
It is sent to our AI provider, Anthropic, to design the schema, and we keep it for 90 days for plan limits and troubleshooting. Do not put personal or confidential data in it. See the Privacy Policy for details.