Developer Tools
SynthForge IO
Free test data generator with realistic multi-table datasets and foreign keys intact
Generate realistic synthetic test data with multi-table relationships and foreign key integrity. Design schemas visually or in natural language, then export to
Overview
The SynthForge IO homepage
SynthForge IO is a test data generator that creates realistic, referentially-intact synthetic datasets for databases. Users can design database schemas using an AI-powered natural language interface, a visual drag-and-drop editor, or by importing SQL DDL. The platform supports 152 realistic field types and maintains proper relationships between tables through single-column foreign keys and cardinality ratios.
Once a schema is defined, SynthForge generates data with configurable statistical distributions and constraints, preserving referential integrity across multiple tables. The generated data can be exported to seven SQL dialects (PostgreSQL, MySQL, SQLite, SQL Server, MariaDB, DuckDB, CockroachDB), JSON, JSONL, Parquet, or CSV formats.
The free tier provides up to 20,000 rows per dataset at no cost and without requiring a credit card. Additional rows are metered in credits, with a full 1,000,000-row dataset costing 41 credits. Schema design is free at any size. The platform also offers a hosted MCP interface for integration with AI agents like Claude and Cursor.
Capabilities
- AI-powered natural language schema design
- Visual drag-and-drop schema editor
- SQL DDL import with LLM-based parser
- 152 realistic field types across 19 categories
- Referential integrity with single-column foreign keys
- Cardinality ratios for parent-child relationships
- Export to 7 SQL dialects and multiple formats
- Statistical distributions and constraints
- Hosted MCP for AI agent integration
- Auto-saved generation defaults
Pricing
Pricing model: Freemium
Free tier: up to 20,000 rows per dataset, schema design at any size, no credit card required. Paid: metered in credits beyond free allowance, 1 credit = 1 cent; full 1,000,000-row dataset costs 41 credits. Credit packs: $5 for 500 credits, $50 for 6,000 credits, $100 for 13,000 credits. Personal API
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SynthForge IO fact sheet
| Community votes | 0 |
|---|---|
| Website | synthforge.io |
SynthForge IO metrics
Vendor metrics for synthforge.io: Ahrefs Domain Rating and Majestic link data, with the delta since the last review.
- Domain Rating
- 0
- no change since last check
- Trust Flow
- 0
- no change since last check
- Citation Flow
- 25
- no change since last check
- Referring domains
- 14
- no change since last check
- External backlinks
- 46
- no change since last check
Vendor Domain Rating (Ahrefs) checked 11 Nov 2026, spec changed 9 Nov 2026. Vendor Majestic data checked 9 Nov 2026, spec changed 9 Nov 2026. Link metrics supplied by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
SynthForge IO vendor domain
Open the vendor record
We read this from the registry's RDAP record on 12 Nov 2026, 10:02 UTC.
- Domain age
- 1 year
- Registered
- Expires
- Registrar
- Cloudflare, Inc
- DNSSEC
- Signed
SynthForge IO post-launch report
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 0 to 0 no change since launch 9 Nov 2026, then 11 Nov 2026 |
| Trust Flow (Majestic) | 0 first measured 9 Nov 2026 |
| Referring domains (Majestic) | 14 first measured 9 Nov 2026 |
Day 2 since launch. Next receipt: day 30, 9 Dec 2026. Many things move these figures, so a change is not proof of cause. Only stored readings are shown.
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Buyer questions
Is there a catch?
No catch, but generation is free for the first rows of every dataset and metered in credits past that. Download limit is 1 GB and stored datasets limit is 5 GB per account. A typical 15-column table generates 200,000 rows in about 12 seconds.
What happens when a dataset outgrows the free rows?
The job quotes its cost before it runs and holds that many credits. If you have them, it runs. If not, it stops before generating anything and tells you the number.
Where does my data go?
Generated datasets are deleted after about 24 hours. Schemas are kept until you delete them, along with your account email. The importer can carry values from sample files into schemas, except for columns that look like names.
How does SynthForge compare to paid synthetic data tools?
SynthForge gives 20,000 rows per dataset free in under a minute, up to 1,000,000 rows per table, 7 SQL dialect exports, 152 field types, AI schema design, and multi-table foreign-key integrity. 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 ships with NVIDIA AI Enterprise.
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