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What is Synthetic Data? - Explanation & Meaning

Learn what synthetic data is, how it is artificially generated to train AI models, and why synthetic data offers a solution for privacy and data scarcity challenges.

Synthetic data is artificially generated data that mimics the statistical properties and patterns of real data without containing actual personal or business information. It is used to train AI models, test software, and share data without privacy risks.

What is What is Synthetic Data? - Explanation & Meaning?

Synthetic data is artificially generated data that mimics the statistical properties and patterns of real data without containing actual personal or business information. It is used to train AI models, test software, and share data without privacy risks.

How does What is Synthetic Data? - Explanation & Meaning work technically?

Synthetic data is generated using techniques such as Generative Adversarial Networks (GANs), Variational Autoencoders (VAEs), differentially private models, and LLM-based generation. GANs use a generator-discriminator architecture where the generator produces increasingly realistic data. VAEs learn a latent representation of the data and sample new data points from it. In 2026, diffusion models are also used for synthetic image generation and LLMs for synthetic text data. Quality is measured through statistical comparison with the original dataset: distributions, correlations, and marginals must match. Privacy is ensured through differential privacy guarantees that mathematically prove individual records cannot be traced. Applications include training AI where real data is scarce or sensitive, testing software with realistic datasets, balancing skewed datasets (oversampling rare categories), and sharing data between organizations without violating privacy legislation.

How does MG Software apply What is Synthetic Data? - Explanation & Meaning in practice?

At MG Software, we use synthetic data to strengthen our development and testing processes. We generate realistic test datasets for applications without using customer data, train AI models on synthetic data when real data is limited or privacy-sensitive, and use synthetic data to simulate edge cases that are rare in production data.

What are some examples of What is Synthetic Data? - Explanation & Meaning?

  • A health insurer generating synthetic patient data to train a fraud detection model without using real patient records, ensuring GDPR compliance is maintained.
  • A fintech startup creating synthetic transaction data to test their anti-money laundering algorithm with rare but critical scenarios that barely occur in real data.
  • A software team generating synthetic user profiles to test a new CRM system with thousands of realistic but fictitious customer records.

Related terms

data privacyartificial intelligencefine tuningdata engineeringmlops

Further reading

Knowledge BaseWhat is Agentic AI? - Explanation & MeaningWhat is Vibe Coding? - Explanation & MeaningData Migration Examples - Safe Transitions to New SystemsBest AI Data Labeling Tools 2026

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Frequently asked questions

High-quality synthetic data can closely approximate the statistical properties of real data and is often sufficient for model training and testing. However, it is not always a perfect substitute: highly complex patterns or rare anomalies may be lost. The best approach is often a combination of real and synthetic data.
When correctly generated with differential privacy guarantees, synthetic data contains no traceable personal data and falls outside the scope of GDPR. However, it is important to validate that the generation method actually guarantees privacy — poorly generated synthetic data may still contain patterns traceable to individuals.
Popular tools in 2026 include Gretel.ai, Mostly AI, Synthetic Data Vault (SDV, open-source), Tonic.ai, and Hazy. For image data, diffusion models like Stable Diffusion are used. LLMs are also increasingly employed to generate synthetic text and tabular data.

Is synthetic data as good as real data?

High-quality synthetic data can closely approximate the statistical properties of real data and is often sufficient for model training and testing. However, it is not always a perfect substitute: highly complex patterns or rare anomalies may be lost. The best approach is often a combination of real and synthetic data.

Is synthetic data GDPR-compliant?

When correctly generated with differential privacy guarantees, synthetic data contains no traceable personal data and falls outside the scope of GDPR. However, it is important to validate that the generation method actually guarantees privacy — poorly generated synthetic data may still contain patterns traceable to individuals.

What tools are used for synthetic data generation?

Popular tools in 2026 include Gretel.ai, Mostly AI, Synthetic Data Vault (SDV, open-source), Tonic.ai, and Hazy. For image data, diffusion models like Stable Diffusion are used. LLMs are also increasingly employed to generate synthetic text and tabular data.

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