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Head-to-head · Test Data Generation Tools

MOSTLY AI vs Mockaroo

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score MOSTLY AI #1 in Test Data Generation Tools 9.4/10 Free plan Free plan✓ 2 of 2 features Visit MOSTLY AI
Mockaroo #8 in Test Data Generation Tools 8.3/10 Free plan Free plan✓ 2 of 2 features Visit Mockaroo

MOSTLY AI leads on 0 checks, Mockaroo on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMOSTLY AI · 9.4/10
  • Free planboth

MOSTLY AI scores higher on our rubric for test data generation tools: 9.4 against 8.3 out of 10; our editors rank them #1 and #8.

MOSTLY AI is the better fit for enterprise relational synthetic data teams. Mockaroo is the better fit for affordable schema-based mock data.

  • MOSTLY AI fits best

    Enterprise relational synthetic data teams

  • Mockaroo fits best

    Affordable schema-based mock data

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Side by side

Feature MOSTLY AI 9.4/10 Visit ↗ Mockaroo 8.3/10 Visit ↗
At a glance
Editor score 9.4 8.3
Ranking #1 in Test Data Generation Tools #8 in Test Data Generation Tools
Best for Enterprise relational synthetic data teams Affordable schema-based mock data
Pricing model Free plan + paid Free plan + paid
Starting price Free plan $60/yr
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Docs Docs
Built for Solo, Small business, Enterprise Solo, Small business, Mid-market, Enterprise
Features MOSTLY AI 2/2 · Mockaroo 2/2
Relational data ✓ ✓
API data generation ✓ ✓
Specs
Generation modes Synthetic Synthetic
Supported data formats CSV, Parquet, XLSX CSV, JSON, SQL, Excel, TXT, custom-delimited text, XML
Deployment Hybrid Hybrid
Generation limit Not checked yet 100000 records
Database connectors Google BigQuery, Databricks, MariaDB, Microsoft SQL Server, MySQL, Oracle Database, PostgreSQL, Snowflake, Apache Hive Not checked yet
Our review
Pros
  • 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
  • REST API generation and mock API endpoint creation
  • Formulas, distributions, schemas, and multiple output formats
  • Enterprise Docker deployment in a private cloud or datacenter
Cons
  • 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
  • Free files are limited to 1,000 rows
  • Free API access is limited to 200 requests per day
  • Enterprise costs $7,500 per year
Our verdict

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…

Read the review →

Mockaroo is a web-based test data generation and API mocking tool for developers working on UI testing, backend testing, API prototyping, database loading, and data-driven development. It generates synthetic data from user-defined schemas,…

Read the review →
  1. MOSTLY AITest Data Generation Tools 9.4Free plan
  2. MockarooTest Data Generation Tools 8.3Free plan

Strengths and trade-offs

  • MOSTLY AI — 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
  • Mockaroo — where it wins

    • REST API generation and mock API endpoint creation
    • Formulas, distributions, schemas, and multiple output formats
    • Enterprise Docker deployment in a private cloud or datacenter

    Where it doesn't

    • Free files are limited to 1,000 rows
    • Free API access is limited to 200 requests per day
    • Enterprise costs $7,500 per year

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update