A fast Python serialization and validation library that encodes and decodes JSON, MessagePack, YAML, and TOML using standard type annotations.
4.2K216PythonBSD-3-ClauseUpdated 17 hours ago
1 alternative
Best open-source alternatives to Pydantic (2026)
Looking for a free, open-source alternative to Pydantic? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| msgspec/msgspec | ★ 4.2K | BSD-3-Clause | 17 hours ago |
FAQ
- Is there a free, open-source alternative to Pydantic?
- Yes. The most popular open-source alternatives to Pydantic on Repolode are msgspec.
- Which Pydantic alternative should I choose?
- msgspec has the most GitHub stars and is released under BSD-3-Clause. Compare the license and last commit of each option in the table above before choosing.