Arvid Kahl

Arvid Kahl

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Sold FeedbackPanda; advises bootstrapped founders (audience-first, exits, growth).

Quantizing LLMs with UnslothAI Supercharges Developer Productivity
SocialApr 16, 2026

Quantizing LLMs with UnslothAI Supercharges Developer Productivity

Gotta say, @UnslothAI quantizing every interesting LLM into usable sizes has to be one of the highest-impact activities on global dev productivity this century. The fact that we can just grab models like https://t.co/PpDF1OYqk1 and _keep_ them is magical. Thanks, Dan &...

By Arvid Kahl
Developers Panic when Claude API Goes Offline
SocialApr 15, 2026

Developers Panic when Claude API Goes Offline

A million agents scream in pain, realizing their own futility whenever Claude's API is down. Can't even have Claude call Codex to do a code review right now. 🤣 How can people POSSIBLY get any work done like this? https://t.co/75n3jkNWYN

By Arvid Kahl
Price SaaS for Unpredictable Agent Counts, Not Limits
SocialApr 14, 2026

Price SaaS for Unpredictable Agent Counts, Not Limits

Take note, SaaS founders. People will run somewhere between 0 and a few dozen agents on your platforms. Per team. Per user. Per project. You won’t know. THEY won’t know. Pricing should facilitate this, not hinder it.

By Arvid Kahl
SaaS Is Becoming a Family‑run Legacy Business
SocialApr 14, 2026

SaaS Is Becoming a Family‑run Legacy Business

I just realized that we are probably in the decade when the first meaningful number of long-term SaaS founders will turn their profitable businesses over to their children. It's pretty weird to think of SaaS as a family business. I...

By Arvid Kahl
Podscan Turns Podcast Mentions Into Instant Book Recommendations
SocialApr 14, 2026

Podscan Turns Podcast Mentions Into Instant Book Recommendations

Oooh, big use case for Podscan, and one that intersects my two favorite pastimes: reading and podcasts. Check out Simon's Podshelf, this is a genius approach to trans-media-referencing. Extracting book recommendation as soon as they're mentioned on shows.

By Arvid Kahl
LLMs Poised to Match Printing
SocialApr 12, 2026

LLMs Poised to Match Printing

In a couple decades, people will start to unironically compare LLMs to the invention of the printing press, the radio, and the internet. It is hard to underestimate the impact these thinking machines already have and will expand onto people’s baseline...

By Arvid Kahl
AI Platforms Will Monetize Aggressively, Driving Away Unwanted Users
SocialApr 12, 2026

AI Platforms Will Monetize Aggressively, Driving Away Unwanted Users

Like it or not, this is the kind of fun monetization optimization strategy we can expect from AI platforms in the years to come. They'll turn every knob and fondle every lever passionately to ensure that unwanted users migrate off their...

By Arvid Kahl
Founders Choose: Cheap VPS Tinkering vs Managed Scaling
SocialApr 12, 2026

Founders Choose: Cheap VPS Tinkering vs Managed Scaling

So, this is topping Hacker News, where an indie dev recommends running SQLite on lean VPSes forever. At the same time, @JackEllis speaks about using managed servers for critical production systems from day one. They're both true. Just at different points in...

By Arvid Kahl
Leadership, Not Hands‑on Work, Defines Founders and Engineers
SocialApr 10, 2026

Leadership, Not Hands‑on Work, Defines Founders and Engineers

Of course you’re a founder if your product is assembled by other people and agentic tools. You can even call yourself an engineer if you held the reins.

By Arvid Kahl
Claude Code's 2‑hour Promise Yields Barely a Prototype
SocialApr 10, 2026

Claude Code's 2‑hour Promise Yields Barely a Prototype

People assume they can build any MVP with Claude Code in 2h. But what they build is a MP at best. Maybe even just an M.

By Arvid Kahl
AI Will Auto‑Label Pages for Skeptics' Comfort
SocialApr 9, 2026

AI Will Auto‑Label Pages for Skeptics' Comfort

Realistically, the result of this will be a “Hey Claude Code, add a Human Crafted label to all pages that feel like AI skeptics might land on” prompt. Not sure if this is funny, sad, inevitable, cunning, or else.

By Arvid Kahl
AI Orchestration Prioritizes Smart Token Use Over Cheap Speed
SocialApr 9, 2026

AI Orchestration Prioritizes Smart Token Use Over Cheap Speed

The delegate starts delegating. This is what I love about AI orchestration, and I thinks it’s only reasonable that we’re now entering the phase where token usage and model intelligence choices matter. I prefer this honest optimization to the subsidized...

By Arvid Kahl
AI Now Drafts Policies Reliably with Peer Review
SocialApr 8, 2026

AI Now Drafts Policies Reliably with Peer Review

And instead of having to hand-craft these policies, we now have magical thinking machines that can do it for us, reliably, and with peer review.

By Arvid Kahl
Git Worktrees Demand Automated Per‑branch DB and Redis Provisioning
SocialApr 7, 2026

Git Worktrees Demand Automated Per‑branch DB and Redis Provisioning

Git worktrees are all the rage for even slightly parallelized agentic engineering. I wonder, how do you deal with "basic" external dev services? Who spins up a new db (w/ fresh data), or a Redis instance, for each worktree? Is this a...

By Arvid Kahl
Veteran Developers Boost Speed Using Agentic AI
SocialApr 7, 2026

Veteran Developers Boost Speed Using Agentic AI

If you need any more convincing that seasoned and highly capable developers are using agentic AI as a productivity tool without creating slop, here’s another example.

By Arvid Kahl
Do Whatever for $200: Developers' True Shopping Cart Test
SocialApr 4, 2026

Do Whatever for $200: Developers' True Shopping Cart Test

I support this, both the angle and the change. "Do whatever for $200" is the ultimate shopping cart test for developers. If you've been burning tokens on performative agentic nonsense, you've actively contributed to this change.

By Arvid Kahl
Founders Pull Back Transparency as Complexity Rises
SocialApr 4, 2026

Founders Pull Back Transparency as Complexity Rises

Got a lot of feedback on this one. Plenty of founders who once did (or planned to) build in public have significantly curtailed their transparency. When the idea/execution-complexity balance changes, marketing and expertise-signaling methods quickly follow.

By Arvid Kahl
AI Turns Public Transparency Into Competitor Blueprint
SocialApr 3, 2026

AI Turns Public Transparency Into Competitor Blueprint

Building in public has been fundamentally changed by the advent of AI. Pains me to say it, but the transparency playbook that built my career now hands competitors a blueprint. Here's what I still share (and what I never will. Anymore.) https://t.co/dejGIMcP7M

By Arvid Kahl
Anthropic Leaked Claude Code for Covert Community Review
SocialMar 31, 2026

Anthropic Leaked Claude Code for Covert Community Review

Hot take: Anthropic leaked Claude Code intentionally to get a nerdosphere code review it would have never gotten if they had just open-sourced it.

By Arvid Kahl
Payment Fees Are a Business Cost, Not a Complaint
SocialMar 30, 2026

Payment Fees Are a Business Cost, Not a Complaint

The people surprised by this have yet to learn of the cost of doing business and just how much a payment provider does for them. $17k on $600k revenue isn’t something you complain about out. You price it in.

By Arvid Kahl
Avoiding Parallelism: One Task at a Time Improves Focus
SocialMar 30, 2026

Avoiding Parallelism: One Task at a Time Improves Focus

I'm capped at 1. The moment I start juggling, I drop my concentration. An agent is a DIRECT execution tool for me, not a delegate-among-many. Might be a me issue, or a tooling issue. But right now, I'm staying away from...

By Arvid Kahl
Unearthing Hidden Claude Skills Through Random Mentions
SocialMar 29, 2026

Unearthing Hidden Claude Skills Through Random Mentions

The discovery of Claude skills still is an unsolved problem. I learn of the most insane high-impact skills from throwaway mentions in some reply somewhere. My mobile browser is full of links like these. What’s the most impressive Claude skill...

By Arvid Kahl
Expensive Tiers Boast, Real Builders Stay Silent
SocialMar 27, 2026

Expensive Tiers Boast, Real Builders Stay Silent

Yeah, this tracks. A lot of the people I see foaming at their mouths have been using the $200 tier for performative "here are my 10 parallel agents" screenshots and have very little to show for it. Meanwhile, the builders...

By Arvid Kahl
Slow, Low‑heat Onions with Butter Transform Every Dish
SocialMar 27, 2026

Slow, Low‑heat Onions with Butter Transform Every Dish

Biggest culinary upgrade for me in recent years was lowering the cooking temperature for onions and taking lots of time (and, of course, butter). Makes any and all dishes better. Can't rush aromatics.

By Arvid Kahl
Podscan Finally Mentioned Alongside Apple After Two Years
SocialMar 27, 2026

Podscan Finally Mentioned Alongside Apple After Two Years

Obviously, I have set up alerting for "Podscan" on Podscan itself. And I love how podcasters are starting to mention the platform along with the massive incumbents like Apple. This one just came in. Took 2 years to get to this...

By Arvid Kahl
Proactive Code Scanning: Fix Bugs Before They Occur
SocialMar 26, 2026

Proactive Code Scanning: Fix Bugs Before They Occur

Now extrapolate this into the future: instead of just reactively fixing issues when they occur, the next step is to proactively fix them as they are detected by a background agent that scans the codebase 24/7 and simulates error scenarios.

By Arvid Kahl
Need Git Commits to Capture Full Prompt Context
SocialMar 25, 2026

Need Git Commits to Capture Full Prompt Context

I wish Claude Code would automatically include the prompts + the full context in a repo as a git commit "note". The full conversation that led from zero to feature, and I want it in git blame, not just who did...

By Arvid Kahl
Future 10x Engineers Thrive on Code Review, Not Writing
SocialMar 24, 2026

Future 10x Engineers Thrive on Code Review, Not Writing

The 10x engineer of tomorrow will look quite different from what it has been. I was never an outstanding dev. But I have a sense of what performant and good code looks like. Been copying it from SO for years.🤣 And now,...

By Arvid Kahl
AI Speeds up PHP Tests From 20 Minutes to 3
SocialMar 24, 2026

AI Speeds up PHP Tests From 20 Minutes to 3

My full PHP test suite took 20+ minutes. Unbearable. Yesterday, I asked Claude Code to speed up my test suite. I knew that parallel testing would be a massive time saver, but I had set it up so that things immediately...

By Arvid Kahl
Claude's OS Control Makes OpenClaw Mac Minis Indispensable
SocialMar 24, 2026

Claude's OS Control Makes OpenClaw Mac Minis Indispensable

All those OpenClaw Mac Minis are going to be really useful now that Claude has full control of the OS.

By Arvid Kahl
Edge AI Brings Private LLMs to Personal Devices
SocialMar 23, 2026

Edge AI Brings Private LLMs to Personal Devices

AI is moving to the edge. Private, isolated LLMs are coming to our tablets, phones, and laptops. Ownership, privacy, access. All things APIs don't/won't/can't give us now. This is significant. And sure, it's slow right now, but this is the slowest it...

By Arvid Kahl
AI Can Instantly Double Your Test Coverage
SocialMar 21, 2026

AI Can Instantly Double Your Test Coverage

Okay this might be totally obvious but you can just tell Claude Code to double your test coverage and it will actually do it. Will need a lot of review, but if you’re just getting started with adding tests to your...

By Arvid Kahl
Ban on AI Tools Feels Like Losing Your Driver’s License
SocialMar 20, 2026

Ban on AI Tools Feels Like Losing Your Driver’s License

This kind of ban (on Claude, your Google account, or similar) is becoming the digital equivalent of losing your drivers license. And for what? Using some open source agentic harness because you saw someone share a cool screenshot? :/

By Arvid Kahl
90% of Queries Resolved by Knowledge Base Articles
SocialMar 20, 2026

90% of Queries Resolved by Knowledge Base Articles

Opposite experience, from the other side (operating one). The majority of user questions can be answered through surfacing the right knowledge base article or quoting from it. Remaining 10% come through. Nathan likely is a more “resourceful” customer who does actually...

By Arvid Kahl
AI Providers Clamp Down on Agents; Founders Unprepared
SocialMar 20, 2026

AI Providers Clamp Down on Agents; Founders Unprepared

Google is banning accounts. Anthropic is locking down their plans. Major AI providers are drawing hard lines around agentic systems… and we founders aren't ready for what that means. Not just for our agentic coding, but how we deal with liability...

By Arvid Kahl
Never Manually Edit Code When Using AI Agents
SocialMar 19, 2026

Never Manually Edit Code When Using AI Agents

One of my most painful realizations using agentic systems is that they treat all work-in-progress as ephemeral. They’ll gladly reset your branch or dev database to “try something”, because they expect to write working code eventually. Never manually add code while...

By Arvid Kahl
Transparent Ads Preserve Trust; Hidden Sponsorship Harms Credibility
SocialMar 19, 2026

Transparent Ads Preserve Trust; Hidden Sponsorship Harms Credibility

“Native” advertisement, am I right. Ads are fine, as long as it’s clear they’re paid placements. Stuff like this breaks immersion and destroys author trust. Horrible practice.

By Arvid Kahl
Cut AI API Costs by Using Flex Tier First
SocialMar 18, 2026

Cut AI API Costs by Using Flex Tier First

If you do AI inference via OpenAI’s API, you should use the flex tier for half price. My requests always try to use flex tier first, and on 429 / 500 errors, I use the default service tier. 95% of my...

By Arvid Kahl
AI Overpromises: Claude Can't Deliver All in 30 Minutes
SocialMar 17, 2026

AI Overpromises: Claude Can't Deliver All in 30 Minutes

Claude, you'll be done with implementing ALL of these improvements in like 30 minutes, including full test coverage and security analysis. You know it. I know it. Which, as Claude shows pre-AI estimates, is WILD. https://t.co/aB2o472961

By Arvid Kahl
AI Makes Public Building Risky; Founders Turn Silent
SocialMar 16, 2026

AI Makes Public Building Risky; Founders Turn Silent

This is why building in public, as fun and empowering as it is, has severe limits. Competitors have a significantly easier time now than before AI to build functionally critical-mass-escaping clones to swipe the bottom of the barrel. Lots of founders are...

By Arvid Kahl
AI Turns Vague Ideas Into Working Code Instantly
SocialMar 16, 2026

AI Turns Vague Ideas Into Working Code Instantly

People acting like "Hey Claude Code, implement this feature I dreamt of just now and have no idea how to even start building" and then prototyping a fully-fledged working implementation isn't anything short of magic.

By Arvid Kahl
Achieving UI/API Parity Enables Rapid Custom Interfaces for All
SocialMar 16, 2026

Achieving UI/API Parity Enables Rapid Custom Interfaces for All

This is a long-term bet of mine, which is why I’m working on full parity between UI functionality and API affordances. Because ultimately, this opens the door to full custom UIs spun up in a few agentic coding hours on top...

By Arvid Kahl
Prompt Claude Code for Full OWASP Security Sweep
SocialMar 14, 2026

Prompt Claude Code for Full OWASP Security Sweep

What do you use to have Claude Code do a full security sweep of your codebase? My go-to is “Run a deep OWASP security sweep of the full app, all APIs and any internal services. Report in descending severity and suggest...

By Arvid Kahl
AI on CPU Will Become as Routine as JSON.parse
SocialMar 12, 2026

AI on CPU Will Become as Routine as JSON.parse

AI on CPU means AI-as-a-primitive. AI.answerQuestion() will be as normal as JSON.parse() once this becomes baked into either the frameworks, languages, or even on the OS level. And I’m very much here for it. Love to see these steps towards...

By Arvid Kahl
Walmart Urged to Secure Email Relay Against Phishing
SocialMar 10, 2026

Walmart Urged to Secure Email Relay Against Phishing

Hey @walmart (or maybe @Walmarttech), could you kindly configure your email relay domain(!) so it can't send phishing emails? I get these once a week, and it's a pretty bad look. https://t.co/lerflUl2eR

By Arvid Kahl
Chrome Extension Becomes Malicious After Ownership Transfer
SocialMar 10, 2026

Chrome Extension Becomes Malicious After Ownership Transfer

Roses are red. Violets are blue. Chrome Extension Turns Malicious After Ownership Transfer, Enabling Code Injection and Data Theft

By Arvid Kahl
Give SaaS Users an API, Empower Their Agents
SocialMar 8, 2026

Give SaaS Users an API, Empower Their Agents

Every SaaS must offer an API to its data & functionality. If you run a SaaS, consider this: eventually, all your serious users will run some kind of agentic tool to get work done. The question is: will you make it easier...

By Arvid Kahl
Never Let Claude Manage Production Infra without Humans
SocialMar 6, 2026

Never Let Claude Manage Production Infra without Humans

Unless you're Pieter Levels, do NOT RUN CLAUDE on your production system or infrastructure. It's a very charismatic toddler when it comes to understanding business consequences. It WILL do something completely disastrous eventually. Human in the loop for all infra work. ALWAYS.

By Arvid Kahl
Unresolved Technical Debt Undermines Product, Morale, and Business
SocialMar 1, 2026

Unresolved Technical Debt Undermines Product, Morale, and Business

Just like regular 0.8x developers, but this time much faster, unresolved technical debt will kill first any real improvements to the product, then morale, then the business.

By Arvid Kahl