Neosync vs Gretel.ai

From $20 per user/month (indicative, cloud)

Free tier available

Self-hosting is free; the cloud service is priced per user and record volume.

Consumption-based on generated records; enterprise agreements available.

Open-source self-hosted edition is free.

Free tier with a monthly credit allowance.

Emerging

Nucleus Cloud · since 2023

Emerging

Gretel (NVIDIA) · since 2019

• Open source and self-hostable, so sensitive data never leaves your infrastructure.
• Preserves referential integrity across tables.
• Far cheaper than the commercial data-privacy platforms.

• Formal differential-privacy guarantees rather than best-effort masking.
• Synthetic data preserves statistical relationships useful for analytics and model training.
• Privacy and quality scores make the trade-off explicit.

• Young project with a small community.
• Fewer database connectors than the incumbents.
• Self-hosting is operational work.

• Model training adds time and cost compared to rule-based masking.
• Overkill when simple anonymisation would satisfy the requirement.
• NVIDIA acquisition changes the strategic outlook.

Teams that need anonymised test data but cannot justify enterprise pricing.

Regulated organisations that need shareable data with defensible privacy properties.