Introduction: Getting Started#

The Evolution of AI Technology and the Potential of One-Person Startups#

The development of artificial intelligence (AI) technology in modern society is truly remarkable. The AI field, which had been somewhat stagnant until the early 2000s, broke through barriers when deep learning technology advanced in 2006. In 2016, it began receiving worldwide attention when Lee Sedol, a 9-dan professional Go player, was defeated by AlphaGo. Then in 2020, OpenAI’s release of ChatGPT sent shockwaves around the world and completely transformed the AI industry landscape. I believe there is no disagreement that AI is currently the hottest term in technology.

AI News#

This group collects AI technology, product, developer tool, infrastructure, and policy updates that seem worth checking from the author’s perspective.

This page acts as the index for individual AI News briefs. Brief pages are not shown directly in the left sidebar; instead, they are managed in the list below in reverse chronological order.

What This Covers#

• AI models, agents, inference, multimodal systems, and on-device AI
• Major announcements from OpenAI, Anthropic, Google DeepMind, Meta AI, Microsoft, NVIDIA, and Hugging Face
• Developer tools such as Cursor, Claude Code, GitHub Copilot, MCP, evaluation tools, and deployment tools
• AI product launches, pricing changes, API updates, and changes that affect real usage
• AI infrastructure trends such as GPUs, inference cost, cloud services, and data centers
• Copyright, regulation, safety, and data usage policy

How To Read#

• Each brief is written to be skimmed in about five minutes.
• When more context is needed, follow the original article or video link inside each item.
• When interpretation matters more than the headline, each brief includes a short note on why it is worth tracking.

Latest News#

What Is an API Key? — How to Connect Directly to AI#

To use “I am your AI,” you need an API Key from an AI provider. This document explains what an API and API Key are, why it’s beneficial to use an API Key directly, and how to get one from each AI provider.

What Is an API?#

API (Application Programming Interface) is, simply put, a gateway for programs to communicate with each other.

Research for One-Person Startups Using AI#

Finding AI Business Strategies You Can Execute Alone#

Table of Contents#

1. Introduction: Getting Started

   • The Evolution of AI Technology and the Potential of One-Person Startups

2. Key AI Concepts

   • Key AI Concepts (1): AI (Artificial Intelligence), Machine Learning / Deep Learning, Training Methods in Machine Learning, LLM (Large Language Models)
   • Key AI Concepts (2): Fine-tuning, RAG (Retrieval-Augmented Generation), Function Calling, MCP (Model Context Protocol)
   • Key AI Concepts (3): Prompt Engineering, Context Engineering

3. Key AI Services and Tools

Revisiting Ted Factory’s Direction in the Agent Era#

2026-02-04

As a software engineer and an AI engineer, I often think about what I should care about in the long run, what goals I should set, and what kind of mindset I should live with. In times like these—when technology changes quickly—it’s natural for plans to shake. But just because it’s natural doesn’t mean I can brush it off lightly. When my direction shakes, my actions change, and when my actions change, the results change.

Books#

I’ve wanted to write a book for a long time. The question was always: how.

Publishing a printed book usually means working with a publisher, paying significant costs, and going through a long production and distribution process—so the barrier to entry feels high. Even with ebooks, meaningful exposure often requires partnering with a publisher or building your own distribution channels. There are platforms where you can publish an ebook without a publisher (for example, Google Books), but for me they still feel less accessible and harder to get discovered on.

Key AI Concepts (1)#

To use AI effectively, it’s important to understand the key concepts behind it. This helps you understand how AI services and tools work, and why the latest news and trends matter.

AI is still evolving at a rapid pace. Services and tools are continuously updated, and new developments emerge all the time. If you build a solid foundation, you can follow the changes more easily and keep improving your ability to apply AI in practice.

Key AI Concepts (3)#

In this chapter, we cover prompt engineering (how to structure questions and instructions) and context engineering (how to provide the background materials the model should use to produce an answer).

Prompt Engineering#

A prompt is the text you give to an AI model as a query (a question or instruction). For example, in ChatGPT, whatever you type into the input box is the prompt. Prompt engineering is the skill of writing prompts in a way that reliably produces the result you want. It may feel like “just typing in a chat box,” but the quality of the output can change dramatically depending on how you phrase and structure the input—so people call it “engineering” because there are principles, trade-offs, and know-how.

First Impressions of Claude Cowork: Bringing Agents to Non-Dev Work#

2026-02-08

A feature called Claude Cowork has been released. (It’s been out for a while, but I only just got around to trying it.) I’ll ramble on a bit more below, but for those short on time, here’s a quick summary:

• Think of Claude Cowork as Cursor for non-developers.
• It can handle file management & referencing + plugin integration + MCP or Skill additions + web browser control.
• I believe that workflows built around Claude Cowork (or similar services) will become mainstream before long.
• That said, it’s still officially in a research preview stage and currently only available on macOS, so many people will need to wait a bit longer.

Background#

While working with Cursor (an AI-powered code editor), I started wondering whether the same approach could be applied to tasks beyond software development. However, since Cursor is inherently a software development tool, there was a real barrier to using it for non-dev work. So I had been quietly hoping that ChatGPT or Claude would release some kind of application better suited for non-development tasks—and it turns out Claude shipped a feature called Cowork first.

AI Use Cases - Boosting Work Productivity#

Now that we’ve covered key concepts as well as services and tools, let’s talk about what you can actually do with them. I’ll break it down into ways to boost work productivity and ways to generate business ideas.

Boosting work productivity#

As mentioned in the previous section on ChatGPT, you can use ChatGPT for information search, summarization, translation, writing, proofreading/editing, code writing and review, data analysis and visualization, image / video generation, idea generation, and problem solving. The same applies not only to ChatGPT but also to other AI services such as Gemini and Claude. Each service has its own strengths and weaknesses, and those can change over time, so it’s best to stay curious, try multiple services, and pick what fits the situation.