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Pragmatic AI Stack

Python

FastAPI

Modern, fast web framework for building APIs with Python

Intermediate
2 min read
v0.104.1
python api web-framework

Flask

Lightweight WSGI web application framework

Beginner
4 min read
python web-framework api

Helicone

Open-source observability platform for LLM applications

Beginner
2 min read
v3.0.0
python monitoring llm

LangChain

Framework for developing applications powered by language models

Intermediate
3 min read
v0.1.0
python llm ai

LiteLLM

Unified interface for 100+ LLMs

Intermediate
3 min read
v1.0.0
python llm api

LlamaIndex

Data framework for LLM applications

Intermediate
5 min read
python llm rag

Pydantic

Data validation using Python type hints

Beginner
4 min read
v2.5.0
python validation type-hints

SQLAlchemy

Python SQL toolkit and Object Relational Mapping library

Advanced
4 min read
v2.0.0
python database orm