Synthetic Data Python Packages

mimesis

Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.

pgmpy

Python Toolkit for Causal and Probabilistic Reasoning

dbldatagen

Generate relevant synthetic data quickly for your projects. The Databricks Labs synthetic data generator (aka `dbldatagen`) may be used to generate large simulated / synthetic data sets for test, POCs, and other uses in Databricks environments including in Delta Live Tables pipelines

copulas

A library to model multivariate data using copulas.

sdmetrics

Metrics to evaluate quality and efficacy of synthetic datasets.

ctgan

Conditional GAN for generating synthetic tabular data.

deepecho

Synthetic Data Generation for mixed-type, multivariate time series.

sdv

Synthetic data generation for tabular data

synthefy-nori

Open-source tabular foundation model for fast, training-free regression with predictive distributions.

whileai

Scientific RL and SFT post-training for AI agents: build evals that can fail, simulate situations, judge checked against people, pass@1 with a 95% interval, train with GRPO/SFT/DPO, prove every gain on a held-out set. uv add whileai

zeroproof

Scientific RL and SFT post-training for AI agents: build evals that can fail, simulate situations, judge checked against people, pass@1 with a 95% interval, train with GRPO/SFT/DPO, prove every gain on a held-out set. uv add whileai

augraphy

Augmentation pipeline for rendering synthetic paper printing, faxing, scanning and copy machine processes

privateai-client

A python client used to interact with the Private AI's API

faker-file

Create files with fake data. In many formats. With no efforts.

self-play-pretrain-zero-data

Implementation of Self-Play Pretraining with Zero Data

x12sdk

Synthetic HIPAA X12 files (837, 835, 834, 270/271, 276/277) with no PHI, plus typed Pydantic v2 models to parse, validate and write them. Maintained continuation of LinuxForHealth x12.

syngen

Open-source version of the TDspora synthetic data generation algorithm.

model2data

model2data turns data models into analytics-ready datasets.

oumi

Easily fine-tune (SFT/RL), evaluate, and deploy Qwen, Gemma, or any open agentic LLM/VLM!

mostlyai

Synthetic Data SDK ✨

misata

Synthetic data that hits the numbers you declare, exactly. Multi-table with verified foreign-key integrity, deterministic, no model in the data path. Python + MCP server. In simple terms, a powerful demo data generator for sales/demos/seed data.

citybehavex

CityBehavEx is a scalable, empirically validated, LLM-assisted urban behavior simulation platform. It generates synthetic city-scale mobility trajectories and lets users inspect, replay, debug, and evaluate them against observed mobility, time-use, semantic, transport, and social-network patterns.

wickra-synth

Deterministic synthetic market microstructure — OHLCV, order book, trades and funding from a single seed, byte-identical across ten languages.

kiln-ai

Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation, dataset management, MCP, and more.