Langchain
The agent engineering platform
Use LLMs as plain Python functions: prompts become typed, testable code.
magentic is an open-source agents project by jackmpcollins (jackmpcollins/magentic on GitHub). It has 2,426 GitHub stars and 128 forks, is released under the MIT license, and was last updated on GitHub on 11 March 2026.
pip install it into your Python project.
Write a signature with types.
The LLM fills in the implementation.
Functions behave like functions.
Call models like regular code.
Pydantic-style type safety.
Mock and unit-test LLM calls.
A tiny surface, easy to learn.
Multi-turn conversations too.
Use anywhere.
Download the source and move into the project folder.
git clone https://github.com/jackmpcollins/magentic.git
cd magenticEvery project documents its own setup; start with install requirements.
cat README.md | head -60Follow the projectβs launch command β Docker, pip, npm, or a binary release.
# see README for the exact launch commandIt is an open-source project at jackmpcollins/magentic with 128 forks.
Yes. MIT licensed.
ChatGPT-style chat models; see the docs.
Even more minimal: functions first, framework second.
Yes. Types drive parsing and coercion.
The agent engineering platform
π« CAMEL: The first and the best multi-agent framework. Finding the Scaling Law of Agents. https://www.camel-ai.org
Open-source framework for building agentic apps in JavaScript, Go, Dart, and Python, built and used in production by Google
Program language models with code and compilers β not fragile prompts.
Google's code-first toolkit for building real AI agents.
Rust terminal multiplexer with a typed SDK: drive any CLI app from code.
The most-starred other Agents projects in the LibreAI catalogue β the realistic shortlist if magentic is not the right fit.
A personal AI that really does things β on any OS, with your data staying yours.
An agentic skills framework & software development methodology that works.
Agent harness optimization system with skills, memory and security for Claude Code, Codex and more
The agent that grows with you β a Python framework for adaptive AI agents.
DeepSeek's plugin-based agent harness where everything is a plugin.
Free and open β grab the source, star the repo, and start creating.