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Latest articles

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1 week ago 25

FastAPI

FastAPI in Production: Settings, Auth, Middleware, and Project Structure

Harden a FastAPI app for production: typed settings with pydantic-settings, bearer auth, logging and CORS middleware, and a scalable project structure.

Cover image for Calling LLMs from Python: The Request Loop, Tokens, Cost, and Retries

1 week ago 26

AI & LLM

Calling LLMs from Python: The Request Loop, Tokens, Cost, and Retries

Call language models from Python with the Claude SDK: the messages loop, tokens and cost, and a client with timeouts and retries you can inject and test.

Cover image for Building an AI Agent API: Tool Calls, Memory, and Guardrails

1 week ago 24

AI & LLM

Building an AI Agent API: Tool Calls, Memory, and Guardrails

Build a small AI agent API: the tool calling loop, conversation memory, and the guardrails that keep an action taking agent safe and bounded.

Cover image for Streaming LLM Responses to the Browser with FastAPI and SSE

1 week ago 29

AI & LLM

Streaming LLM Responses to the Browser with FastAPI and SSE

Stream a real model response to the browser: consume the model stream in Python, forward it through a FastAPI SSE endpoint, and render it live.

Cover image for Structured Outputs and Function Calling: Getting Reliable JSON from LLMs

1 week ago 23

AI & LLM

Structured Outputs and Function Calling: Getting Reliable JSON from LLMs

Get dependable JSON from language models with structured outputs and function calling, then validate with Pydantic so your code works with typed objects.

1 week ago 26

FastAPI

Streaming and Background Work in FastAPI: SSE and BackgroundTasks

Stream responses from FastAPI with server sent events, run side effects with BackgroundTasks, and know when to move to a real task queue.

Cover image for Building a RAG Service with FastAPI: Chunking, Embeddings, and Vector Search

1 week ago 25

AI & LLM

Building a RAG Service with FastAPI: Chunking, Embeddings, and Vector Search

Build a RAG service end to end: chunk documents, embed and search by similarity, and answer grounded in retrieved context from a FastAPI endpoint.

Cover image for Claude Fable 5: A Clear-Eyed Look at Anthropic's New Flagship Model

1 week ago 626

AI Programming

Claude Fable 5: A Clear-Eyed Look at Anthropic's New Flagship Model

A balanced, hands-on look at Claude Fable 5: how Anthropic's new flagship compares to Opus 4.8 and Sonnet 4.6 on price, context, and capabilities, and when the 2x premium is and is not worth paying.