Best AI Synthetic Data Generators in 2026

When you need usable data without relying on the underlying records, compare generators by the structures and operating constraints they support. Relational, time-series and unstructured data coverage can help distinguish tools for different workloads; maximum rows per job and privacy-risk metrics add detail on scale and risk assessment. Check deployment options alongside free-plan availability and paid-from pricing to see what may fit your environment and budget. Synthehol Dataset, MOSTLY AI and SimpleTest are among the named options to consider, with Synth Studio, Synthetic Data Vault and Tonic Fabricate also represented. The right comparison depends on the data shape you need and how you expect to generate and manage it.