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Pydantic Alternatives
Similar projects and alternatives to pydantic
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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Home Assistant
:house_with_garden: Open source home automation that puts local control and privacy first.
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Pandas
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
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InfluxDB
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litestar
Discontinued Light, Flexible and Extensible ASGI API framework | Effortlessly Build Performant APIs [Moved to: https://github.com/litestar-org/litestar]
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Mathesar
Mathesar is an 100% open source collaborative web application that empowers users of all technical skill levels to view, edit, query, and collaborate on PostgreSQL data in an intuitive spreadsheet-like interface. It has native database-level access control, is self hosted and deployed in minutes, and works directly with Postgres objects without extra abstractions.
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msgspec
A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better pydantic alternative or higher similarity.
pydantic discussion
pydantic reviews and mentions
Posts with mentions or reviews of pydantic. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-11-16.
- Python Design Patterns for Clean Architecture
Pydantic Documentation
- I built binary serializer for Pydantic models that's up to 7× smaller than JSON
Found in issue where maintainer answered that they are only going to support JSON
https://github.com/pydantic/pydantic/discussions/4097
- Dict Unpacking in Python
- A Practical Guide on Structuring LLM Outputs with Pydantic
The solution? Leverage Pydantic, a Python library that enables runtime data validation using type annotations.
- Loading Pydantic models from JSON without running out of memory
Pydantic author here. We have plans for an improvement to pydantic where JSON is parsed iteratively, which will make way for reading a file as we parse it. Details in https://github.com/pydantic/pydantic/issues/10032.
Our JSON parser, jiter (https://github.com/pydantic/jiter) already supports iterative parsing, so it's "just" a matter of solving the lifetimes in pydantic-core to validate as we parse.
This should make pydantic around 3x faster at parsing JSON and significantly reduce the memory overhead.
- Advanced Pydantic: Generic Models, Custom Types, and Performance Tricks
Across this five-post series, we’ve journeyed from Pydantic’s basics—type validation and nested models—to advanced integrations with FastAPI, SQLAlchemy, and scalable techniques. You’ve learned how to build declarative, type-safe models, handle complex APIs, and optimize performance. To deepen your knowledge, explore the Pydantic documentation, contribute to the open-source project, or experiment with real-world use cases. Check out our GitHub repo for code samples and a Pydantic cheat sheet. Thank you for joining us—happy coding!
- Getting Started with Pydantic: Type-Safe Data Models in Python
To dive deeper, check out the Pydantic documentation for advanced features like nested models, custom validators, and settings management. Happy coding!
- Resumindo características da linguagem Python
- FastAPI, Pydantic, Psycopg3: the holy trinity for Python web APIs
Pydantic is bundled with FastAPI and is excellent for modelling, validating, and serialising API responses.
- Pydantic Settings + AWS the easy way
Pydantic Settings is a python library that extends 🚀 Pydantic for dealing with settings management.
- A note from our sponsor - SaaSHub www.saashub.com | 23 Dec 2025
Stats
Basic pydantic repo stats
183
26,209
9.8
5 days ago
pydantic/pydantic is an open source project licensed under MIT License which is an OSI approved license.
The primary programming language of pydantic is Python.
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