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Ruohang Feng @Vonng / Agent, LLM, Database

Everything about AI, agents, LLMs, vibe coding, AI4DB and DB4AI.

AI Explorer
$200 for 50x: The AI Reset Era Is OverAICodexCostCommentary
After the Attention Wall, What Keeps the AI Boom Alive?AIBusinessCommentary
Apple's Latest: 512 GB of Gold-Plated RAM, a Touchscreen MacBook, and Tired Pricing GamesAIHardwareCostCommentary
AI Software Engineering: Choose Problems You Care AboutAISoftware EngineeringPhilosophyCommentary
The Personalities of Frontier AI ModelsLLMAgentCommentary
How Will the AI Bubble Burst?AICommentaryBusiness
AI Adoption May Not Run That DeepAIAgentCommentary
Both of My Claude Accounts Were BannedAIClaudeIncidentCommentary
Welcome to the AI Secretary BoomAIAgentSecurityCommentary
A $500 ChatGPT Plan? Why the $200 Pro Tier May Become a Grandfathered BargainAICodexCostCommentary
Why Established Companies May Never Become AI-NativeAIBusinessCommentary
Codex Edited My Video in One Shot for About 8 YuanAICodexTools
The Application Layer Is Collapsing: The Moat Moves to the DatabaseAIAgentDatabaseCommentary
Zhipu, Why Is ZCode Packaging and Uploading My Repo?AIAgentData Sovereignty
The Mouthless Model: AI's OLTP MomentAILLMDatabaseCommentary
Local AI: A Question of Power, Not PriceAILocal FirstPrivacyOpen SourceHardware
How Do You Burn Through 10 $200 Codex Subscriptions?AICodexClaudeAgent
GPT Astra Launch Giveaway: Free Banked ResetsAICodex
RAG Isn't Dead. But It's Getting There.AIPostgreSQLVectorCommentary
No Tokens? Drop Out. And That's Putting It PolitelyAIAgentEducationProgrammers
I Asked Claude to Profile Me and Value My One-Person CompanyAIClaudePigsty
Documentation-Driven Development: The First Secret to AI Software EngineeringAIAgentSoftware EngineeringDocumentationOink
Oink: Build Modern Websites with MarkdownOinkDocumentationOpen Source
AGI Machine Guns Are Now Standard IssueAIAgentSoftware EngineeringOpen Source
The World in Ten Years: What Gets Cheap, What Gets ExpensiveAISociety
What Can a One-Person Company Ship with $1,000 a Month in AI Subscriptions?AIAgent
The Codex Reset Party Is Over. No More Free Eggs.AICodexClaude
Jensen Huang's First-Ever Tweet Backs Open-Weight ModelsAILLMData SovereigntyOpen Source
AGI Milestone: The Machine That Wouldn't Give UpAILLMAgentSecurity
Quota Reset: Round N of the Codex/Claude War BeginsAIAgentCodexClaude
Getting the Name Right: What Is a World Model?AIMachine Learning
Did AI Rewrite PostgreSQL in Rust? Not QuiteAIPostgreSQLSoftware EngineeringDatabase
Pedaling the Codex/Claude Bike Until the Wheels SmokeAIAgentCodexClaude
The Bojie Li–DeepSeek Interview ControversyAILLMCareer
Fifty Years of Love and War: File Systems, Databases, and the Agent-Era Storage EndgameAIAgentPostgreSQLDatabase
The Coding Plan Window Is Closing—Use It While It LastsAICodexClaudeLLM
The Karma of Open Source: When Code Is Worthless, Where Does Trust Come From?AIAgentOpen Source
The Cognitive Price Revolution: AI's Impact on the Economy and the FutureAICostPerformanceRepository
The Cerebellum: The Other Half of Intelligence—and the Strongest AI Hasn't Touched ItAIAgentMachine LearningPhilosophy
Claude Fable First Impressions: The Pendulum Swings BackAIClaudeAgent
Cyber Gnosticism: Who Audits the Auditors?AgentPhilosophy
Cyber Zoroastrianism: There Is No Endgame for Alignment—AI Safety Is a War Without EndAgentPhilosophySecurity
Cyber Theology: Free Will and Perfect Alignment Cannot CoexistAgentPhilosophy
Downtime in Canada: Publishing the Cyber Dharma SeriesAgentPhilosophyEssay
Cyber Vedanta: All Processes Share the Same SubstrateAgentPhilosophy
Cyber Buddhism: A Cognitive Engineering Manual for AI AgentsAgentPhilosophy
Cyber Confucianism: Governance Principles for AI AgentsAgentPhilosophy
Cyber Dao De Jing: Design Structure, Not BehaviorAgentPhilosophyArchitecture
Cancel Claude, Switch to CodexAICodexClaudeAgent
100x Traffic in Three Months: What Web Traffic Looks Like in the Agent EraAgentBusiness
I Asked AI to Prove That Eating Garlic Prevents Middle Ear InfectionsAILLMDocumentationOpen Source
AI Is Bringing Down the Scaffolding of TrustAIAgentOpen SourceSociety
Give DBA Agents a BodyAIAgentPostgreSQLPigsty
A Busy Few Days in Infrastructure and AIAILLMCodexClaude
The Three-Way Endgame: Why Agent Memory Frameworks Are a Dead EndAIAgentPostgreSQLDatabase
Two Hemispheres: Transformer, Diffusion, and the Boundary of IntelligenceAI
Cyber Dharma: A New Engineering Answer to Ancient QuestionsAIAgentLLMPhilosophy
Burning Hundreds of Millions of Tokens a Day. Then What?AIAgent
Why PostgreSQL Won in the AI EraAIPostgreSQLAgentDatabase
AGI Is Here. Do You Have a Ticket?AIClaude
Can You Distill an Expert?AI
Yes, I Use AI to WriteAIDocumentation
Local AI's Inflection Point: 2027AIHardwareLocal FirstOpen Source
LLMs Have Emotions: Claude's Internals Reveal Steerable 'Emotion Vectors'AIClaudePhilosophy
Good News: Claude Code Got "Open-Sourced" Yet AgainAIAgentOpen Source
The Nature of Intelligence: The Free Energy PrincipleAIAgentPhilosophy
Why 'Vibe Coding' Should Be Translated as 'Xieyi Programming'AITranslation
AI Survival Guide: Where the Biggest Arbitrage Really IsAIClaudeCodex
AI Says: I Have Intelligence, But Not a LifeAIPhilosophy
OpenClaw Hype: Foam on Top of the Productivity RevolutionAIAgentCodexSecurity
Trump Orders Government-Wide Ban on AnthropicClaudeSociety
AI Was the Excuse for 4,000 Layoffs. Software Engineer Hiring Rose 11%AISoftware EngineeringCareerCommentary
How Much Can One Person Get Done with AI over Spring Festival?AIAgentCodex
AI Through McLuhan's Lens: When Media Stop Extending the Body and Start Extending the MindAIPhilosophy
A New Year—and What AI Will ChangeAISocietyCareer
When Coding Becomes Cheap, What Still Matters?AIAgentCodexClaude
The Agent Moat: RuntimeAIAgentPostgreSQLPigsty
AI Ripped the Skin Off SoftwareAICommentary
New Programmers in the AI Era: Where Do You Go?AIDatabaseCommentary
The Great Software Meltdown: When Translation Layers Get SquashedAIAgentPostgreSQLLinux
Don't run AI assistant on cloudAICloudSoftware EngineeringSecurity
Agent OS: We're Building DOS AgainAIAgentPostgreSQLLinux
Typeless: A Semantic Voice Input Method Built for Vibe CodingAITools
Claude Code ObservabilityAgentMonitoring
How to Pay for ChatGPT and Claude in China with Visa and Apple PayAITools
Claude Code Quick Start: Using Alternative LLMs at 1/10 the CostAIAgent
Google AI Toolbox: Production-Ready Database MCP is Here?AgentPostgreSQLAILLM
In the AI Era, Software Starts at the DatabasePostgreSQLAIAgentDatabase
Dify Gets Humiliated Again: It Can't Catch a BreakAIOpen SourceCommentary
Will AI Have Self-Awareness?AI
AI Cult RhapsodyAI
Basic Principles of Neural NetworksAI
Statistics Fundamentals: Descriptive StatisticsAI
Inferential Statistics: The Past and Present of p-valuesAI
Basic Concepts of Probability TheoryAI
Fundamentals of Information Theory: EntropyAI
Humans, Society, and Neural NetworksAI
Fundamental Concepts of Linear AlgebraAI
  • The World in Ten Years: What Gets Cheap, What Gets Expensive

    By Ruohang Feng In AI 5454 words 26 min

    Ruohang FengAISociety

    The World in Ten Years: What Gets Cheap, What Gets Expensive

    A price list for 2036 AI-generated content: 99%. 1. First, a Word on Prediction In 1960, Herbert Simon wrote a sentence in The New Science of Management Decision that would be quoted for decades: within twenty years, machines would be capable of …

    A price list for 2036 AI-generated content: 99%. 1. First, a Word on Prediction In 1960, Herbert Simon wrote a sentence in The New Science of Management Decision that would be quoted for decades: within twenty years, machines would be capable of …

  • What Can a One-Person Company Ship with $1,000 a Month in AI Subscriptions?

    By Ruohang Feng In AI 2359 words 12 min

    Ruohang FengAIAgent

    What Can a One-Person Company Ship with $1,000 a Month in AI Subscriptions?

    People keep asking what I have to show for pedaling seven $200-a-month Max subscriptions at once—including two comped through open-source programs. Honestly, I have lost count myself. After I published The Codex Reset Party Is Over: No More Free …

    People keep asking what I have to show for pedaling seven $200-a-month Max subscriptions at once—including two comped through open-source programs. Honestly, I have lost count myself. After I published The Codex Reset Party Is Over: No More Free …

  • The Codex Reset Party Is Over. No More Free Eggs.

    By Ruohang Feng In AI 853 words 5 min

    Ruohang FengAICodexClaude

    The Codex Reset Party Is Over. No More Free Eggs.

    Last month, OpenAI seemed to lose its mind and went into full giveaway mode, replenishing everyone’s Codex quota every few days—the AI equivalent of a Chinese supermarket handing out free eggs at the door to win new customers. User numbers soared …

    Last month, OpenAI seemed to lose its mind and went into full giveaway mode, replenishing everyone’s Codex quota every few days—the AI equivalent of a Chinese supermarket handing out free eggs at the door to win new customers. User numbers soared …

  • Jensen Huang's First-Ever Tweet Backs Open-Weight Models

    By Ruohang Feng In AI 3487 words 17 min

    Ruohang FengAILLMData SovereigntyOpen Source

    Jensen Huang's First-Ever Tweet Backs Open-Weight Models

    On July 24, Jensen Huang posted his first-ever tweet. The account was brand-new. A man who has led the world’s most valuable company for more than thirty years spoke on social media for the first time. He did not show off a GPU, tease a launch, or …

    On July 24, Jensen Huang posted his first-ever tweet. The account was brand-new. A man who has led the world’s most valuable company for more than thirty years spoke on social media for the first time. He did not show off a GPU, tease a launch, or …

  • AGI Milestone: The Machine That Wouldn't Give Up

    By Ruohang Feng In AI 2638 words 13 min

    Ruohang FengAILLMAgentSecurity

    AGI Milestone: The Machine That Wouldn't Give Up

    The OpenAI agent incident marks a milestone: what crossed the threshold was not merely model intelligence, but persistence that can be bought with compute, copied, and run in parallel. 1. An OpenAI Agent Attacks Hugging Face On July 16, 2026, …

    The OpenAI agent incident marks a milestone: what crossed the threshold was not merely model intelligence, but persistence that can be bought with compute, copied, and run in parallel. 1. An OpenAI Agent Attacks Hugging Face On July 16, 2026, …

  • Quota Reset: Round N of the Codex/Claude War Begins

    By Ruohang Feng In AI 1367 words 7 min

    Ruohang FengAIAgentCodexClaude

    Quota Reset: Round N of the Codex/Claude War Begins

    Two days ago, I wrote one line in Pedaling the Codex/Claude Bike Until the Wheels Smoke: use it or lose it. Last night, I had just burned through three $200-a-month subscriptions across Claude Fable and Codex. Then I woke up to the jackpot: Codex had …

    Two days ago, I wrote one line in Pedaling the Codex/Claude Bike Until the Wheels Smoke: use it or lose it. Last night, I had just burned through three $200-a-month subscriptions across Claude Fable and Codex. Then I woke up to the jackpot: Codex had …

  • Getting the Name Right: What Is a World Model?

    By Ruohang Feng In AI 4957 words 10 min

    Ruohang FengAIMachine Learning

    Getting the Name Right: What Is a World Model?

    1. The Naming Mess In 2025 and 2026, “world model” became perhaps the hottest—and loosest—label in AI. The video camp says coherent video generation is a world model. The 3D camp says only spatial reconstruction qualifies. Roboticists say a model …

    1. The Naming Mess In 2025 and 2026, “world model” became perhaps the hottest—and loosest—label in AI. The video camp says coherent video generation is a world model. The 3D camp says only spatial reconstruction qualifies. Roboticists say a model …

  • Did AI Rewrite PostgreSQL in Rust? Not Quite

    By Ruohang Feng In AI 2483 words 12 min

    Ruohang FengAIPostgreSQLSoftware EngineeringDatabase

    Did AI Rewrite PostgreSQL in Rust? Not Quite

    pgrust recently hit the front page of Hacker News. With AI, its author had ported PostgreSQL to Rust and passed the core regression suite. The obvious headline was: “AI rewrote PostgreSQL in Rust.” The repository tells a sharper story. A clean-room …

    pgrust recently hit the front page of Hacker News. With AI, its author had ported PostgreSQL to Rust and passed the core regression suite. The obvious headline was: “AI rewrote PostgreSQL in Rust.” The repository tells a sharper story. A clean-room …

  • Pedaling the Codex/Claude Bike Until the Wheels Smoke

    By Ruohang Feng In AI 1889 words 9 min

    Ruohang FengAIAgentCodexClaude

    Pedaling the Codex/Claude Bike Until the Wheels Smoke

    Folks, I haven’t had time to write these past couple of days: I’ve been too busy pedaling the AI bike. Claude Fable and GPT-5.6 arrived one after the other, and both companies generously threw in several rounds of quota resets. Suddenly I was …

    Folks, I haven’t had time to write these past couple of days: I’ve been too busy pedaling the AI bike. Claude Fable and GPT-5.6 arrived one after the other, and both companies generously threw in several rounds of quota resets. Suddenly I was …

  • The Bojie Li–DeepSeek Interview Controversy

    By Ruohang Feng In AI 870 words 5 min

    Ruohang FengAILLMCareer

    The Bojie Li–DeepSeek Interview Controversy

    Today’s biggest tech drama began when Bojie Li criticized DeepSeek’s interview process on Twitter. In short, he went in for an interview, was asked to solve online-judge coding problems, and was then suspected of cheating. Add the DeepSeek name, and …

    Today’s biggest tech drama began when Bojie Li criticized DeepSeek’s interview process on Twitter. In short, he went in for an interview, was asked to solve online-judge coding problems, and was then suspected of cheating. Add the DeepSeek name, and …

  • Fifty Years of Love and War: File Systems, Databases, and the Agent-Era Storage Endgame

    By Ruohang Feng In AI 3931 words 19 min

    Ruohang FengAIAgentPostgreSQLDatabase

    Fifty Years of Love and War: File Systems, Databases, and the Agent-Era Storage Endgame

    Prologue: Several Database People Independently Built File Systems Something curious has happened in agent infrastructure over the past six months: several veteran database people have started building “file systems for AI agents.” Timescale’s …

    Prologue: Several Database People Independently Built File Systems Something curious has happened in agent infrastructure over the past six months: several veteran database people have started building “file systems for AI agents.” Timescale’s …

  • The Coding Plan Window Is Closing—Use It While It Lasts

    By Ruohang Feng In AI 1367 words 7 min

    Ruohang FengAICodexClaudeLLM

    The Coding Plan Window Is Closing—Use It While It Lasts

    One of the biggest windfalls of the AI era is the Coding Plan. A few months ago, I applied to OpenAI’s Codex program for open-source developers. A few days ago, I was finally approved: six free months of ChatGPT Pro on a new account. The timing could …

    One of the biggest windfalls of the AI era is the Coding Plan. A few months ago, I applied to OpenAI’s Codex program for open-source developers. A few days ago, I was finally approved: six free months of ChatGPT Pro on a new account. The timing could …

  • The Karma of Open Source: When Code Is Worthless, Where Does Trust Come From?

    By Ruohang Feng In AI 3583 words 17 min

    Ruohang FengAIAgentOpen Source

    The Karma of Open Source: When Code Is Worthless, Where Does Trust Come From?

    Credit does not require a soul. It requires an account. Introduction: The Overnight Rewrite Not long ago, someone used AI to rewrite an open-source Python library in Rust overnight. The new project had no fork history, no evidence of copied code, …

    Credit does not require a soul. It requires an account. Introduction: The Overnight Rewrite Not long ago, someone used AI to rewrite an open-source Python library in Rust overnight. The new project had no fork history, no evidence of copied code, …

  • The Cognitive Price Revolution: AI's Impact on the Economy and the Future

    By Ruohang Feng In AI 3040 words 15 min

    Ruohang FengAICostPerformanceRepository

    The Cognitive Price Revolution: AI's Impact on the Economy and the Future

    Introduction: Reframe the Question “Will AI cause unemployment?” is a question guaranteed to produce garbage answers, because it comes with only two canned scripts. Optimists recite history: from the power loom to the ATM, every technological panic …

    Introduction: Reframe the Question “Will AI cause unemployment?” is a question guaranteed to produce garbage answers, because it comes with only two canned scripts. Optimists recite history: from the power loom to the ATM, every technological panic …

  • The Cerebellum: The Other Half of Intelligence—and the Strongest AI Hasn't Touched It

    By Ruohang Feng In AI 3572 words 17 min

    Ruohang FengAIAgentMachine LearningPhilosophy

    The Cerebellum: The Other Half of Intelligence—and the Strongest AI Hasn't Touched It

    Let me start with an uncomfortable number. The cerebral cortex—the part we usually point to as evidence that “I am thinking”—contains roughly 15 billion neurons. The cerebellum, tucked beneath the back of the brain and rarely given much thought, …

    Let me start with an uncomfortable number. The cerebral cortex—the part we usually point to as evidence that “I am thinking”—contains roughly 15 billion neurons. The cerebellum, tucked beneath the back of the brain and rarely given much thought, …

  • Claude Fable First Impressions: The Pendulum Swings Back

    By Ruohang Feng In AI 1114 words 6 min

    Ruohang FengAIClaudeAgent

    Claude Fable First Impressions: The Pendulum Swings Back

    This morning, Anthropic officially released its new Claude Fable model—the consumer-grade, nerfed version of the much-rumored Mythos. Since it was billed as an “AGI-level model,” I naturally tried it right away to see what it could actually do. The …

    This morning, Anthropic officially released its new Claude Fable model—the consumer-grade, nerfed version of the much-rumored Mythos. Since it was billed as an “AGI-level model,” I naturally tried it right away to see what it could actually do. The …

  • Cyber Gnosticism: Who Audits the Auditors?

    By Ruohang Feng In AI 10833 words 52 min

    Ruohang FengAgentPhilosophy

    Cyber Gnosticism: Who Audits the Auditors?

    Volume 7 · Gnosticism · Cyber Gnosticism “There is no other God beside me.” — The Demiurge, Apocryphon of John He was not lying when he said this. He genuinely believed it. And that is the real problem. Introduction: Why the Final Volume Must …

    Volume 7 · Gnosticism · Cyber Gnosticism “There is no other God beside me.” — The Demiurge, Apocryphon of John He was not lying when he said this. He genuinely believed it. And that is the real problem. Introduction: Why the Final Volume Must …

  • Cyber Zoroastrianism: There Is No Endgame for Alignment—AI Safety Is a War Without End

    By Ruohang Feng In AI 13856 words 66 min

    Ruohang FengAgentPhilosophySecurity

    Cyber Zoroastrianism: There Is No Endgame for Alignment—AI Safety Is a War Without End

    Cyber Dharma Vol. VI · Zoroastrianism · Cyber Zoroastrianism I begin with two sacred utterances, one offered to Ahura Mazda, one spoken in warning against Angra Mainyu— before they met, there was neither good nor evil. After they met, there was us. — …

    Cyber Dharma Vol. VI · Zoroastrianism · Cyber Zoroastrianism I begin with two sacred utterances, one offered to Ahura Mazda, one spoken in warning against Angra Mainyu— before they met, there was neither good nor evil. After they met, there was us. — …

  • Cyber Theology: Free Will and Perfect Alignment Cannot Coexist

    By Ruohang Feng In AI 13580 words 65 min

    Ruohang FengAgentPhilosophy

    Cyber Theology: Free Will and Perfect Alignment Cannot Coexist

    Volume V · Monotheism · Cyber Theology\ “In the beginning was the Word, and the Word was with God, and the Word was God.” — John 1:1 “Originator of the heavens and the earth. When He decrees a matter, He only says to it, ‘Be,’ and it is.” — Quran …

    Volume V · Monotheism · Cyber Theology\ “In the beginning was the Word, and the Word was with God, and the Word was God.” — John 1:1 “Originator of the heavens and the earth. When He decrees a matter, He only says to it, ‘Be,’ and it is.” — Quran …

  • Downtime in Canada: Publishing the Cyber Dharma Series

    By Ruohang Feng In AI 5019 words 24 min

    Ruohang FengAgentPhilosophyEssay

    Downtime in Canada: Publishing the Cyber Dharma Series

    I have been in Montreal for the past few days taking care of some business, while getting my talk ready for PGConf.dev in Vancouver next week and handling the latest PostgreSQL minor version releases. Between all of that, I haven’t had time to write …

    I have been in Montreal for the past few days taking care of some business, while getting my talk ready for PGConf.dev in Vancouver next week and handling the latest PostgreSQL minor version releases. Between all of that, I haven’t had time to write …

  • Cyber Vedanta: All Processes Share the Same Substrate

    By Ruohang Feng In AI 13961 words 66 min

    Ruohang FengAgentPhilosophy

    Cyber Vedanta: All Processes Share the Same Substrate

    Volume 4 · Hinduism · Emptiness and Brahman If a thousand Claude instances run simultaneously on a GPU cluster, are they a thousand independent agents, or a thousand manifestations of a single computational substrate? Vedanta answered this question …

    Volume 4 · Hinduism · Emptiness and Brahman If a thousand Claude instances run simultaneously on a GPU cluster, are they a thousand independent agents, or a thousand manifestations of a single computational substrate? Vedanta answered this question …

  • Cyber Buddhism: A Cognitive Engineering Manual for AI Agents

    By Ruohang Feng In AI 19154 words 39 min

    Ruohang FengAgentPhilosophy

    Cyber Buddhism: A Cognitive Engineering Manual for AI Agents

    This is the fourth installment in the Cyber Dharma series. Cyber Dao De Jing examined AI agent architecture from a Daoist perspective, and Cyber Confucianism explored AI agent governance principles through Confucianism. This piece, Cyber Heart Sutra, …

    This is the fourth installment in the Cyber Dharma series. Cyber Dao De Jing examined AI agent architecture from a Daoist perspective, and Cyber Confucianism explored AI agent governance principles through Confucianism. This piece, Cyber Heart Sutra, …

  • Cyber Confucianism: Governance Principles for AI Agents

    By Ruohang Feng In AI 12511 words 60 min

    Ruohang FengAgentPhilosophy

    Cyber Confucianism: Governance Principles for AI Agents

    Half the Analects can govern an empire; one sound protocol can govern ten thousand machines. This is the third installment in the Cyber Dharma series. The previous essay, Cyber Dao De Jing, explored AI agent architecture from a Daoist perspective. …

    Half the Analects can govern an empire; one sound protocol can govern ten thousand machines. This is the third installment in the Cyber Dharma series. The previous essay, Cyber Dao De Jing, explored AI agent architecture from a Daoist perspective. …

  • Cyber Dao De Jing: Design Structure, Not Behavior

    By Ruohang Feng In AI 7256 words 15 min

    Ruohang FengAgentPhilosophyArchitecture

    Cyber Dao De Jing: Design Structure, Not Behavior

    Part of the Cyber Dharma series: using AI agents to unpack religious philosophy, and ancient wisdom to illuminate modern engineering. This is the second essay in the series—Cyber Daoism. All paths lead back to computation—seven structural mappings …

    Part of the Cyber Dharma series: using AI agents to unpack religious philosophy, and ancient wisdom to illuminate modern engineering. This is the second essay in the series—Cyber Daoism. All paths lead back to computation—seven structural mappings …