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Guides, tutorials, and insights on AI coding tools and API providers.

· 7 min read

DeepSeek's 545% Profit Margin Claim Made Me Spit Coffee on My Keyboard — Here's What's Actually Goin

Last night, I was on my second cup of coffee at 1 AM, debugging a caching issue in an inference service, when I saw that headline. "DeepSeek Achieves 545% Cost-

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· 7 min read

I Spent Two Weeks Grinding RL Interview Questions So You Don't Have To — Here's What Actually Matter

Last year, a friend of mine got a PhD offer and turned it down. Just skipped straight to industry recruiting season instead. Landed a massive offer. I was sitti

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· 10 min read

Why Your AI Agent Keeps Getting Lost: Lessons from 7 Production Fails

Last Wednesday at 11 PM, I was staring at a wall of logs, questioning my life choices. The agent had gone rogue again. I asked it to compile a week of meeting n

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· 9 min read

The Brutal Truth About AI Models in 2026: What Actually Works vs. What's Just Expensive

This problem chews through 200 GPU hours of mine every single year. Here's the deal: It's June 2026, and if you're doing serious work, the most expensive model

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· 11 min read

I Let AI Code My Project in 10 Minutes. Then Spent 100 Minutes Cleaning Up Its Mess

Last Wednesday afternoon, I was tweaking a messaging middleware tool. Claude Code spit out the entire codebase in 10 minutes. Looked legit—interfaces, protocols

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· 8 min read

Stop Building AI Agents. Seriously. (Unless You Actually Need Them)

Someone asked me yesterday whether their team should build an AI Agent. My answer? 90% of projects don't need one. At all. Look, I've been writing this AI colum

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· 9 min read

I Tested LLM Coding Skills for 3 Months—Most Chinese Models Collapsed at Round Three

The winner? GPT-5.5 took top marks in my V3 programming test. But honestly? That's not the interesting bit. The interesting bit is that most Chinese large langu

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· 7 min read

I Cancelled 4 AI Subscriptions Last Month — Here's the One I Kept

Last Wednesday night, I was doomscrolling in bed when a message popped up on WeChat (China's everything-app). "I can't take it anymore," my friend wrote

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· 8 min read

Dijkstra Was Right About AI Programming (And I've Got the Battle Scars to Prove It)

Let me tell you a story. Last Thursday, 2 AM. I'm staring at a PR log, not because of insomnia—I genuinely couldn't sleep. Stripe merges 1,300 unattended agent

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· 6 min read

I Almost Broke Production Last Week—Stop Making One Model Do All the Heavy Lifting

Let me start with the punchline: using a single model for every task is like hammering screws. It works, technically, but you'll hate every second of it

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· 7 min read

The Real Reason Your LLM Can't Output Valid JSON (And What Actually Fixes It)

Someone asked me yesterday: "You've been writing tech columns for a decade—what's the question you get asked most?" I didn't even hesitate. "How do I make the b

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· 6 min read

Why I Finally Switched to llama.cpp (And When I Definitely Won't Use It)

Last Tuesday, I sat on a train with a laptop that had no GPU, 8GB of RAM, and a 7B parameter language model running locally. It wasn't fast. But it worked. That

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