Curated development tutorials from top sources. Filter by language.
A randomized A/B test is the cleanest form of product experiment available. The coin flip that splits users between the new prompt template and the co
In this tutorial, I'll show you how to build a multi-agent AI system in Python with no orchestration framework. We'll also implement this in LangGraph
When a CEO buys shares after their company’s stock has fallen hard, it's tempting to read the purchase as a vote of confidence. The person running the
Your LLM product experiment just came back positive, with a promising 8-percentage-point lift in task completion. You ship the feature and leadership
In this tutorial, I'll show you how to build a local AI agent with tool calling and short-term memory using LangChain v1, Ollama, Qwen, and Python. Th
In this tutorial, I'll show you how to build a private local RAG-powered Q&A AI agent for your personal documents using LangChain v1, Ollama, Qwen, an
Your AI product experiment reaches statistical significance on day 14 of a planned 30-day run, measuring a causal inference question: did the LLM-base
Your team ships an intelligent query-routing feature for an LLM SaaS platform. The feature reads each incoming request in real time and decides whethe
Imagine opening your laptop and writing code that follows the laws of Quantum Physics. Sounds like science fiction, right? That's exactly what I thoug
A few months ago, Andrej Karpathy released autoresearch. It's an open-source Python tool that lets an AI agent run experiments on one GPU while you si
A Bloom filter gives you something that feels like magic: it can tell you whether an item is in a set of billions, using only a few kilobytes of memor
In this tutorial, I’ll show you how to build an AI web research agent using Ollama, Qwen, and Python. The agent searches the web for a topic, fetches
On June 12, 2026, SPY closed up 0.54%. EchoStar (SATS) dropped 11%. Lennar (LEN) dropped 4.9%. Most of the other 500 stocks in the index barely moved
Most financial models use analyst consensus as a single forward-looking input: revenue estimate, EPS estimate, EBITDA estimate, or some version of a f
For years, developers have debated which technology stack was best for building websites. Some preferred React. Others chose Vue, Angular, Svelte, or
On April 3, 2025, the US announced sweeping tariffs on Chinese imports. SPY dropped 4.8% that day. The next day, it dropped another 6%. Financial news
Choosing a stock API looks simple until the project becomes real. At first, you only need a few prices. You send a request, get JSON back, load it int
PDFs are still one of the most widely used document formats in business. Financial reports, invoices, contracts, compliance filings, and operational d
Automation scripts often validate process completion instead of system health. A Kubernetes pod can be running while the application inside it can't a
Every product experimentation team running causal inference on LLM-based collaborative features eventually hits the same wall: your users aren't indep