Pydantic Python Packages

pydantic

Data validation using Python type hints

1.1B 28K 3K

pydantic-core

Data validation using Python type hints

936.3M 28K 3K

fastapi

FastAPI framework, high performance, easy to learn, fast to code, ready for production

507M 100K 10K

pydantic-settings

Settings management using pydantic

398.8M 1K 155

jiter

Fast iterable JSON parser.

355.4M 533 61

langchain

The agent engineering platform.

328.7M 141K 23K

pydantic-ai-slim

AI Agent Framework, the Pydantic way

212.3M 18K 2K

langchain-core

The agent engineering platform.

171M 141K 23K

pydantic-graph

AI Agent Framework, the Pydantic way

134M 18K 2K

langchain-openai

The agent engineering platform.

69.1M 141K 23K

openapi-pydantic

Modern, type-safe OpenAPI schemas in Python using Pydantic 1.8+ and 2.x

67.2M 121 23

langgraph

Build resilient agents.

64.8M 37K 6K

pydantic-extra-types

Extra Pydantic types.

57.3M 322 97

langgraph-prebuilt

Build resilient agents.

54.6M 37K 6K

langgraph-sdk

Build resilient agents.

52.9M 37K 6K

langgraph-checkpoint

Build resilient agents.

51M 37K 6K

ormsgpack

MessagePack serialization library for Python derived from orjson, written in Rust using PyO3

48.1M 398 26

langchain-text-splitters

The agent engineering platform.

46.2M 141K 23K

json-repair

Repair malformed JSON from LLMs, APIs, logs, and user input in Python.

36.7M 5K 205

pydantic-ai

AI Agent Framework, the Pydantic way

21.9M 18K 2K

langchain-anthropic

The agent engineering platform.

21.2M 141K 23K

langchain-classic

The agent engineering platform.

21M 141K 23K

sqlmodel

SQL databases in Python, designed for simplicity, compatibility, and robustness.

20.4M 18K 867

logfire

AI observability platform for production LLM and agent systems.

19M 4K 253