Free.
Generous defaults. Honest limits.
Design data models, generate realistic multi-table datasets, and export to your database - at zero cost. Up to 10M rows per request, 5 GB of stored datasets per account. We are being frugal with hosting because every byte costs money; if there is enough demand to support raising the limits, we will.
How SynthForge IO compares
A practical look at how SynthForge stacks up against the tools developers actually consider.
← Swipe to compare →
| Faker (lib) | Mockaroo | ChatGPT prompt | SynthForge IO | Tonic.ai | |
|---|---|---|---|---|---|
| Free for individual devs | 1k rows/file, free | $10/mo credit | |||
| Visual schema design | Spreadsheet-style | ||||
| Multi-table FK integrity | Manual | Limited | Unreliable | ||
| Multi-database export | Text only | ||||
| Statistical distributions | Limited | ||||
| Natural-language schema | Recent, limited | ||||
| Runs without signup | Signup for >1k rows | ||||
| API access | N/A (it IS code) | Paid | N/A | Web only | |
| Up to 10M rows per request | Manual loops | Capped on free | Unreliable | ||
| Production data masking | |||||
| SOC2 / HIPAA compliance | N/A | ||||
| Best for | Devs writing scripts | Quick CSV/JSON dumps | One-off small datasets | Relational test data, free, at scale | Enterprises with prod data they can't expose |
Comparisons reflect each tool's free or entry tier. Pricing and features evolve; check vendor sites for current details.
Frequently Asked Questions
What's the catch?
No catch. SynthForge is hosted on Cloudflare and the bills are real, so we set the per-account defaults to something we can absorb: 10M rows per generation request and 5 GB of stored datasets per account. If you need more, tell us; when there is enough demand to support it, we will lift the ceilings.
Is SynthForge IO really free?
Yes. No sign-up fees, no credit card, no trial timer, no per-feature paywall. Every field type, every export format, AI-assisted schema design, multi-table foreign-key integrity, and the ML training-dataset templates are included at zero cost. The only constraints are the per-account defaults that exist so we can keep the service running for everyone.
What are the actual limits?
Per generation request: up to 10,000,000 rows. Per-account storage: 5 GB of stored datasets and ML datasets. Per-account rate limits on AI schema calls and on generation throughput exist to protect the shared service. No row cap on schema design, no feature gating.
I'm hitting the limits. What can I do?
Tell us. We tune the defaults based on actual usage, and if there is enough demand to support raising them, we will.
Where does my data go?
Data generation runs on Cloudflare Workers and Containers. Generated datasets are stored encrypted on Cloudflare R2 for roughly 24 hours so you can download them, then automatically deleted.
How does SynthForge IO compare to paid synthetic data tools?
Mockaroo's free tier caps at 1,000 rows per file and 200 API requests per day. Tonic.ai Structural is contract-sales only; Tonic Fabricate Free has $10 of monthly credits. NVIDIA NeMo (formerly Gretel) ships with NVIDIA AI Enterprise. SynthForge gives you 10M rows per request, 7 SQL dialect exports, AI schema design, and multi-table foreign-key integrity at $0. See the comparison pages for detail.
Start Using SynthForge IO for Free
No sign-up fees. No credit card. No trial timer. Just start designing and generating data.