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Sungwoo Lee

Hands-on guides on AI tools and prompting — ChatGPT, Claude, Perplexity, and more. I test the tools and write what actually works, at Tangents → https://my-blog.org/tangents

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Cloudflare Workers Pricing: $5 Minimum, 10M Requests Included
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Cloudflare Workers Pricing: $5 Minimum, 10M Requests Included

#cloudflare #serverless #webdev #javascript
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3 min read
Cloudflare Workers AI: 10,000 Free Neurons a Day, Then $0.011
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Cloudflare Workers AI: 10,000 Free Neurons a Day, Then $0.011

#cloudflare #serverless #ai #webdev
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4 min read
AI Coding Assistant Free: What 2,000 Completions and 50 Chats Buy
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AI Coding Assistant Free: What 2,000 Completions and 50 Chats Buy

#ai #productivity #programming #tools
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4 min read
Claude Code Install: 3 Shell Commands, and the 2 Errors That Trip You
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Claude Code Install: 3 Shell Commands, and the 2 Errors That Trip You

#ai #claude #cli #tutorial
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4 min read
Cursor vs Claude Code: $8-$200 Plans, but Claude Bills Extra
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Cursor vs Claude Code: $8-$200 Plans, but Claude Bills Extra

#ai #cursor #claude #productivity
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4 min read
Claude Code Pricing: $20 Pro, $100 Max, and a $13/Day API Average
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Claude Code Pricing: $20 Pro, $100 Max, and a $13/Day API Average

#ai #claude #productivity #tooling
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4 min read
Why Idle Claude Code Sessions Burn Tokens: 4.7 Turns per Alert
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Why Idle Claude Code Sessions Burn Tokens: 4.7 Turns per Alert

#claude #ai #productivity #devtools
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5 min read
Claude Code Automation: Publish Gates Blocked 23 Bad Posts in 10 Days
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Claude Code Automation: Publish Gates Blocked 23 Bad Posts in 10 Days

#claudecode #automation #python #devops
1
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6 min read
4,474 of 5,369 Output Tokens Were Thinking: Reading Claude API Errors
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4,474 of 5,369 Output Tokens Were Thinking: Reading Claude API Errors

#claude #api #debugging #llm
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6 min read
One Unattended Claude Loop Burned 13 Points of Plan Usage
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One Unattended Claude Loop Burned 13 Points of Plan Usage

#claudecode #ai #automation #productivity
6
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4 min read
I Had AI Grade My 12 Vibe-Coded Blog Posts: 15.1 out of 25
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I Had AI Grade My 12 Vibe-Coded Blog Posts: 15.1 out of 25

#ai #claude #testing #writing
1
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5 min read
Claude Code Skills: 96% of My Command's Output Was Thinking
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Claude Code Skills: 96% of My Command's Output Was Thinking

#claude #ai #productivity #tutorial
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5 min read
6 Cloudflare Workers Gotchas We Hit in Production
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6 Cloudflare Workers Gotchas We Hit in Production

#cloudflare #webdev #javascript #serverless
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6 min read
Exit Code 0, Nothing Produced: The Automation Failure I Shipped Five Times
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Exit Code 0, Nothing Produced: The Automation Failure I Shipped Five Times

#automation #devops #python #testing
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7 min read
65 Tool Pages, 12 Pageviews in 30 Days: The Bug Was in the Site Graph
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65 Tool Pages, 12 Pageviews in 30 Days: The Bug Was in the Site Graph

#seo #webdev #postmortem #analytics
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4 min read
65 Calculators, One Cloudflare Worker, No Build Step
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65 Calculators, One Cloudflare Worker, No Build Step

#cloudflare #webdev #javascript #performance
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5 min read
Why Growth Curves Bend: Exponential vs. Logistic, With Code
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Why Growth Curves Bend: Exponential vs. Logistic, With Code

#math #programming #datascience #beginners
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5 min read
How to Build a Custom GPT That Doesn't Answer Generically
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How to Build a Custom GPT That Doesn't Answer Generically

#ai #chatgpt #tutorial #productivity
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4 min read
Which AI Model Should You Use? A Routing Guide for Developers
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Which AI Model Should You Use? A Routing Guide for Developers

#ai #chatgpt #productivity #beginners
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5 min read
Best AI Agents in 2026: What They Do and How to Pick One
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Best AI Agents in 2026: What They Do and How to Pick One

#ai #machinelearning #programming #productivity
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6 min read
AI Agents vs Chatbots: What's the Actual Difference
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AI Agents vs Chatbots: What's the Actual Difference

#ai #chatgpt #beginners #tutorial
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5 min read
How to Build an AI Agent Without Writing Code
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How to Build an AI Agent Without Writing Code

#ai #automation #tutorial #beginners
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6 min read
System Prompt vs User Prompt: What's the Difference?
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System Prompt vs User Prompt: What's the Difference?

#ai #chatgpt #programming #beginners
1
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5 min read
Role Prompting Explained: How AI Personas Actually Work
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Role Prompting Explained: How AI Personas Actually Work

#ai #chatgpt #programming #beginners
1
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6 min read
Prompt Chaining Explained: Break Big AI Tasks Into Steps
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Prompt Chaining Explained: Break Big AI Tasks Into Steps

#ai #chatgpt #programming #productivity
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6 min read
Fine-Tuning vs Prompt Engineering: A Developer's Decision Framework
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Fine-Tuning vs Prompt Engineering: A Developer's Decision Framework

#ai #machinelearning #programming #chatgpt
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5 min read
What Is an AI Agent? Agentic AI Explained for Developers
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What Is an AI Agent? Agentic AI Explained for Developers

#ai #agentic #programming #tutorial
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5 min read
What Is a Context Window? Token Limits Explained for Developers
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What Is a Context Window? Token Limits Explained for Developers

#ai #machinelearning #programming #beginners
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4 min read
What Is RAG (Retrieval-Augmented Generation)? Explained for Developers
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What Is RAG (Retrieval-Augmented Generation)? Explained for Developers

#ai #machinelearning #programming #tutorial
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4 min read
What Is MCP (Model Context Protocol)? A Developer's Explainer
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What Is MCP (Model Context Protocol)? A Developer's Explainer

#ai #mcp #programming #tutorial
2
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4 min read
How to Stop AI Hallucinations: 6 Prompt Tactics That Reduce Made-Up Answers
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How to Stop AI Hallucinations: 6 Prompt Tactics That Reduce Made-Up Answers

#ai #chatgpt #productivity #writing
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4 min read
What Is Prompt Engineering? A Plain-English Guide for Anyone Using AI
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What Is Prompt Engineering? A Plain-English Guide for Anyone Using AI

#ai #chatgpt #productivity #writing
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4 min read
How to Write Better AI Prompts: The 5 Principles That Actually Work
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How to Write Better AI Prompts: The 5 Principles That Actually Work

#ai #chatgpt #productivity #writing
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4 min read
Few-Shot Prompting Explained: Teach AI With Examples (With Templates)
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Few-Shot Prompting Explained: Teach AI With Examples (With Templates)

#ai #chatgpt #productivity #writing
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5 min read
20 ChatGPT Prompts for Work That Actually Save You Time
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20 ChatGPT Prompts for Work That Actually Save You Time

#ai #chatgpt #productivity #writing
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8 min read
Chain-of-Thought Prompting, Explained (with the Research Behind It)
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Chain-of-Thought Prompting, Explained (with the Research Behind It)

#ai #machinelearning #chatgpt #productivity
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4 min read
Perplexity AI Review: Is It Worth It in 2026?
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Perplexity AI Review: Is It Worth It in 2026?

#ai #productivity #research #tools
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4 min read
Best AI Coding Assistants Compared (2026): Copilot, Cursor, Claude Code & ChatGPT
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Best AI Coding Assistants Compared (2026): Copilot, Cursor, Claude Code & ChatGPT

#ai #programming #productivity #tools
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4 min read
ChatGPT vs Perplexity: Which AI Tool Actually Wins for Research?
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ChatGPT vs Perplexity: Which AI Tool Actually Wins for Research?

#ai #chatgpt #productivity #research
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4 min read
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