Best AI Synthetic Data Generators in 2026
Updated
In short: Synthehol Dataset is ranked #1 of 26 as of 4 October 2026, ahead of SimpleTest and NVIDIA ShadowPlay. The best-ranked option with a free plan is SimpleTest. The lowest first paid tier on this page is Tonic Fabricate at $29/mo.
When you need realistic data without relying on the original records, compare synthetic data generators by the structures they support and where they can run. Relational, time-series and unstructured data support show what kinds of datasets you can produce; maximum rows per job gives a sense of scale, while privacy-risk metrics address another part of evaluation. Deployment, free-plan availability and paid-from pricing help you weigh operational fit and cost. The ranking starts with MOSTLY AI, Tonic Fabricate and Synthesized, with Synth Studio and SimpleTest following. Check which combination of data type, job size and deployment matches your use case.
26 AI synthetic data generators ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Synthehol Dataset Top pick · 7.7 Free plan · $332.50/mo
#2 SimpleTest Runner-up · 7.6 Free plan · $750/mo
#3 NVIDIA ShadowPlay Also great · 7.2 Free plan · Free
- Free planFree trial apiself-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planFree trialPlatforms$332.50/mofirst paid tier About Synthehol DatasetVisit site - Free planFree trial apiextensionWeb
- Free plan
- Yes
- Paid from
- 750 /mo
- Deployment
- on_prem
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms$750/mofirst paid tier About SimpleTestVisit site - Free plan Windows
- Free plan
- Yes
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms - Free plan apiLinuxself-hostedWeb
- Free plan
- Yes
- Deployment
- hybrid
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Free plan LinuxmacOSself-hostedWindows
- Deployment
- self_hosted
- Relational data
- Yes
- Unstructured data
- No
RecognisedDocumentedFree planFree trialPlatforms - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 29 /mo
- Deployment
- hybrid
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms$29/mofirst paid tier About Tonic FabricateVisit site - Free trial apiLinuxmacOSself-hostedWindows
- Free plan
- No
RecognisedDocumentedFree planFree trialPlatforms - Free plan Linux
- Free plan
- Yes
- Deployment
- self_hosted
RecognisedDocumentedFree planFree trialPlatforms - Free plan apiself-hosted
- Free plan
- Yes
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms$250/mofirst paid tier About Synthetic Data VaultVisit site - apiLinuxself-hostedWeb
- Free plan
- Yes
- Deployment
- hybrid
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms - apiself-hostedWeb
- Free plan
- No
- Deployment
- hybrid
- Relational data
- Yes
RecognisedDocumentedFree planFree trialPlatforms - LinuxWindows
- Free plan
- Yes
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms - Web
- Deployment
- cloud
RecognisedDocumentedFree planFree trialPlatforms - Web
- Deployment
- self_hosted
- Relational data
- No
- Unstructured data
- No
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- Yes
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms -
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- Yes
- Paid from
- 10 /mo
RecognisedDocumentedFree planFree trialPlatforms - WebRecognisedDocumentedFree planFree trialPlatforms
-
- Relational data
- Yes
- Time-series data
- Yes
- Unstructured data
- No
RecognisedDocumentedFree planFree trialPlatforms -
- Free plan
- Yes
RecognisedDocumentedFree planFree trialPlatforms - Web
- Deployment
- self_hosted
RecognisedDocumentedFree planFree trialPlatforms -
- Deployment
- self_hosted
- Unstructured data
- No
RecognisedDocumentedFree planFree trialPlatforms -
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms - Web
- Free plan
- No
- Deployment
- hybrid
RecognisedDocumentedFree planFree trialPlatforms
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI synthetic data generator is ranked first on The Geeks Club?
Synthehol Dataset is ranked #1 of 26 with a score of 7.7. SimpleTest is second and NVIDIA ShadowPlay third.
How many of these have a free plan?
9 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Tonic Fabricate has the lowest first paid tier we found: $29/mo.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.