MOSTLY AI
MOSTLY AI: A broad synthetic-data platform for enterprise relational data teams. Ranked #1 of 28 in Test Data Generation Tools by our editors (9.4/10); pricing: Free plan; best for enterprise relational synthetic data teams.
At a glance
- Editor score9.4 / 10
- PricingFree plan
- Best forEnterprise relational synthetic data teams
- Free planYes
- Generation modesSynthetic
- Founded2017
- Facts checked20 Sep 2026
Where it wins
- Preserves relationships across single-, two-, and multi-table datasets
- Connects with major databases, warehouses, and cloud storage services
- Combines web, REST API, Python SDK, and self-hosted access
Where it doesn't
- The free tier uses daily credits for generation
- Self-hosted deployment is aimed at Kubernetes-based environments
- The broad feature set may require dedicated data-engineering ownership
Our verdict on MOSTLY AI
MOSTLY AI is a data intelligence platform for organizations that need synthetic datasets, mock data, simulated scenarios, and controlled access to production-data patterns. It supports tabular and textual synthetic data, with generation across single tables, two-table relationships, and multi-table structures. Its strongest fit is enterprise teams working with relational data who need referential integrity, quality evaluation, and repeatable delivery through web, API, or self-hosted workflows.
Its coverage extends beyond basic row generation. MOSTLY AI includes relationship preservation, synthetic data quality reports, conditional simulation, rebalancing, imputation, and fairness controls. Teams can train generators, export and import them, and create datasets through REST API and Python SDK access. Database and cloud-storage connectors include Google BigQuery, Databricks, MariaDB, Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL, Snowflake, Apache Hive, AWS S3, Google Cloud Storage, and Azure Blob Storage. That combination makes it suitable for organizations with varied data infrastructure and more demanding relational test-data requirements.
The product follows a freemium model with a free plan that provides daily credits. Hybrid deployment is available, and self-hosted options support Kubernetes-based environments. The open-source Python SDK adds another route for teams that prefer programmatic workflows. MOSTLY AI is a strong choice for enterprise relational synthetic-data programs that need broad generation modes, database connectivity, and governance-oriented controls. Smaller teams seeking a narrowly focused, low-configuration test-data tool may find its breadth and deployment options more involved than necessary.
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MOSTLY AI pricing
MOSTLY AI fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Generation modes | Synthetic |
| Relational data | Yes |
| API data generation | Yes |
| Supported data formats | CSV, Parquet, XLSX |
| Deployment | Hybrid |
| Generation limit | Not verified |
| Database connectors | Google BigQuery, Databricks, MariaDB, Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL, Snowflake, Apache Hive |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Docs |
| Built for | Solo, Small business, Enterprise (editorial estimate) |
| Integrations | 12 integrations: Google BigQuery, Databricks, MariaDB, Microsoft SQL Server, MySQL, Oracle Database … See all → |
| Pricing | Free plan |
| Website | mostly.ai |
| Facts checked | 20 Sep 2026 |
MOSTLY AI integrations
MOSTLY AI lists 12 integrations on its own site.
- Google BigQuery
- Databricks
- MariaDB
- Microsoft SQL Server
- MySQL
- Oracle Database
- PostgreSQL
- Snowflake
- Apache Hive
- AWS S3
- Google Cloud Storage
- Azure Blob Storage
See all MOSTLY AI integrations →
Alternatives to MOSTLY AI
- SynthesizedA database-focused platform for schema-faithful synthetic data and protected test environments.9.2
- Tonic FabricateA flexible choice for AI-assisted relational test data with API and export workflows.9.0
- YData SyntheticA broad synthetic-data toolkit for multi-format, relational, and time-series generation.8.8
See all MOSTLY AI alternatives →
MOSTLY AI vs the competition
- MOSTLY AI vs Synthesized
- MOSTLY AI vs Tonic Fabricate
- MOSTLY AI vs YData Synthetic
- MOSTLY AI vs Benerator
- MOSTLY AI vs GenRocket
- MOSTLY AI vs Synthetic Data Vault
Compare MOSTLY AI with any tool side by side →
Also Ranked In
MOSTLY AI is ranked in 6 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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