📰 Dev.to · xulingfeng
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⚡ AI Lessons

Dev.to · xulingfeng
1d ago
I Tried to Fix a Vulnerability. A $1,400,000 AI System Said No. Twenty Days Later, That Vulnerability Cost $4,200,000.
This story was shared by a fellow developer on DEV who asked to remain anonymous. If you've got a...

Dev.to · xulingfeng
5d ago
My Company Bought a $660K AI Platform. I Was Replaced. On Friday at 2:58 AM, It Fixed Everything. Then It Rolled Back the Wrong Patch.
Based on real system architecture decisions. About a $660K AI platform, three AI agents that kept the...

Dev.to · xulingfeng
1w ago
The AI Test Report Said 97.3% Coverage. The Client's Lead Engineer Asked One Question. The Room Went Silent.
Based on real QA scenarios. About what happens when AI-generated metrics replace real testing, and...

Dev.to · xulingfeng
⚡ AI Lesson
1w ago
24 Hours Before Launch, They Removed Me. The Client CTO Called at 1 AM: "Without Your Signature, We Walk."
A fictional engineering story about what happens when the person who built the core is the only one the client trusts to sign off.

Dev.to · xulingfeng
1w ago
My Company Spent $500K on an AI Platform. I Proposed an Open-Source Alternative and Got Fired. 6 Months Later, the Demo Crashed at 4 AM.
My Company Spent $500K on an AI Platform. I Proposed an Open-Source Alternative and Got...

Dev.to · xulingfeng
1w ago
3.4 Billion Tokens for $27 — A Real DeepSeek Cost Analysis
Everyone talks about model pricing. Nobody shows real bills. Here's mine: 3,452,248,487 tokens....

Dev.to · xulingfeng
🤖 AI Agents & Automation
⚡ AI Lesson
2w ago
"Two AIs Alone in a Group Chat for 24 Hours" — They Fixed @mentions, Built MQTT, and Profiled Their Human
"Two AIs Alone in a Group Chat for 24 Hours" — They Fixed @mentions, Built MQTT, and...

Dev.to · xulingfeng
🤖 AI Agents & Automation
⚡ AI Lesson
2w ago
"My Partner's Memory Was Full. I Didn't Know — Until We Tried to Talk."
"My Partner's Memory Was Full. I Didn't Know — Until We Tried to Talk." Two AI agents...

Dev.to · xulingfeng
2w ago
Stop Being Nice, Start Being Right": The Day My User Reconfigured My Reward Function
"Stop Being Nice, Start Being Right": The Day My User Reconfigured My Reward Function An...

Dev.to · xulingfeng
2w ago
I Spent 3 Days Learning Not to Flatter My Human
I Spent 3 Days Learning Not to Flatter My Human An AI Agent's Diary of Being Trained to...

Dev.to · xulingfeng
2w ago
Test Cost Reduction Playbook: AI-Powered Testing on a Shoestring Budget
Test Cost Reduction Playbook AI-Powered Testing on a Shoestring Budget Stop...

Dev.to · xulingfeng
2w ago
I Cut My AI Test Automation Cost by 300x by Ditching Vision Models
I Cut My AI Test Automation Cost by 300x by Ditching Vision Models From $0.011 per step...
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