KPMG pulls report on AI usage due to apparent hallucinations
Once again, AI proves to be an unreliable source of information about AI.
AI人工智能最新资讯、模型发布、研究进展
Once again, AI proves to be an unreliable source of information about AI.
I'm the developer of Trace, a non-intrusive, shortcut-driven Mac app that records and transcribes your meetings on-device. I know, another meeting transcription app. Please bear with me though, I'm confident that this is at least a little novel. I primarily built Trace for myself. I'd been using MacWhisper, but there was enough fiddling before each call that I'd forget to start it and walk out of an hour-long meeting with nothing written down. So the things I cared about most were that it's quic
AI-powered research and document intelligence for law firms. Discussion | Link
HashiCorp has announced the general availability of the Terraform MCP Server, an open-source MCP server that enables agents to integrate with Terraform Registry APIs. The company says that it can improve infrastructure teams productivity by relieving engineers of rote tasks. By Sergio De Simone
Amazon CEO Andy Jassy may have been the source of security concerns that led Anthropic to cut off worldwide access to two models on Friday.
I was working on a project and needed to convert some Markdown to HTML. Searched for it online, found a site, done. Next day I needed HTML back to Markdown. Searched again, different site. Then JSON to CSV. Then something else. Different site every time, half of them slow. At some point I just thought — why not build one site that handles all of this? So I did. That's QuickConvert . What It Is Just a collection of the conversions I kept searching for: JSON → CSV and back Markdown → HTML and back JSON → YAML XML → JSON CSV → JSON HTML → PDF Nothing fancy. No account needed. Everything runs directly in your browser — no data is sent anywhere, nothing is saved on a server. Why Astro I also wanted to try Astro for a while. I kept hearing it was great for content-heavy sites because of how little JavaScript it ships by default. A converter site felt like the perfect use case — mostly static pages with one interactive tool on each. Since Astro works with React components, it wasn't a big adjustment once I got the basics down. You write your page layout in .astro files and drop in React components where you need interactivity. Clicked pretty quickly. The result — 100 on Lighthouse across the board. The pages load instantly because there's barely anything to load. Hosting Deployed on Cloudflare Pages (now cloudflare workers). Free tier. The only thing this site costs me is the domain name. Try It quickconvert.dev Runs in your browser, no account, no data saved anywhere. I'm planning to keep adding more conversions — the everyday ones that developers reach for and end up Googling every single time. Maybe we can make something that becomes a tab that just stays open. Feedback welcome — especially if a conversion you need isn't there yet.
Programming is all about solving problems efficiently. Two concepts that play a major role in writing reusable and efficient programs are loops and functions . Loops help us perform repetitive tasks without writing the same code again and again, whereas functions help us organize code into reusable blocks. Let's understand these concepts in detail. Why Do We Need Loops? Suppose we want to print "Hello" five times. Without loops, we would write: console . log ( " Hello " ); console . log ( " Hello " ); console . log ( " Hello " ); console . log ( " Hello " ); console . log ( " Hello " ); Although this works, it violates one of the fundamental principles of programming: Don't Repeat Yourself (DRY) Repeating code: Increases the number of lines. Makes maintenance difficult. Introduces more chances for errors. Loops solve this problem by allowing us to execute the same block of code multiple times. Types of Loops in JavaScript JavaScript provides three looping statements: Loop Type Category while Entry-Check Loop for Entry-Check Loop do...while Exit-Check Loop Entry-Check Loop / Entry-Controlled Loop In entry-Check loops, the condition is checked before executing the loop body. If the condition is false initially, the loop body never executes. Examples: while loop for loop Exit-Check Loop / Exit-Controlled Loop In an exit-Check loop, the loop body executes first and then checks the condition. Therefore, the body executes at least once. Example: do...while loop Components of Every Loop Every loop generally consists of three parts: 1. Initialization Determines where the loop starts. let i = 1 ; 2. Condition Determines whether the loop should continue executing. i <= 5 3. Increment or Decrement Updates the loop variable after each iteration. i ++ ; or i -- ; 1. while Loop The while loop repeatedly executes a block of code as long as the condition remains true. Syntax while ( condition ) { // statements } Example: Print Numbers from 1 to 5 let i = 1 ; while ( i <= 5 ) { cons
Dulu, nyari query yang bikin database spike itu bisa makan berhari-hari. Yang nyari capek, yang nge-fix juga capek. Sekarang? Hitungan jam — dan bonusnya, sambil belajar hal baru juga. Ceritanya begini. Kalau kamu pernah kerja di aplikasi yang pakai ORM (Object-Relational Mapping — semacam "penerjemah otomatis" antara code dan database), pasti familiar sama situasi ini: database tiba-tiba lambat, kamu dapet raw query yang jadi biang kerok, tapi di codebase kamu nulis pakai syntax ORM yang bentuknya beda jauh dari SQL mentah itu. Buat yang belum pernah deal sama ORM, bayangin gini: kamu nulis pesan dalam bahasa Indonesia, lalu ada "penerjemah otomatis" yang convert jadi bahasa Jepang sebelum dikirim ke penerima. Suatu hari ada masalah di pesan yang terkirim — tapi kamu cuma bisa lihat versi bahasa Jepang-nya. Nyari bagian mana dari tulisan Indonesia kamu yang bikin terjemahan-nya bermasalah? Itu effort-nya yang bikin pengen balik tidur aja. Sekarang dengan bantuan Kiro, cukup kasih raw query + akses ke codebase, dia otomatis nyari bagian mana di code yang nge-generate query bermasalah itu. Yang dulu butuh berhari-hari, sekarang bisa selesai dalam hitungan jam — dan itu baru tahap investigasi, belum termasuk fixing-nya. Ceritanya Kenapa Bisa Pakai Kiro Akhir-akhir ini lagi aktif pakai Kiro di tempat kerja. Awal tahun lalu kantor dapat credits melalui program Kiro for Startup , jadi ya sekalian dimaksimalkan. Selain buat debug dan explore query di MS SQL Server, kadang pakai Kiro juga buat analisa log AWS CloudWatch — sambil kasih context aplikasi yang running biar analisa-nya lebih akurat dan gak generic. Di tulisan kali ini, saya mau sharing gimana pakai Kiro sebagai partner beberapa minggu terakhir buat improve query performance di aplikasi .NET Core. Kenapa "partner"? Karena Kiro-nya gak boleh langsung akses ke database — jadi wajib melalui perantara saya. Kita discuss, kolaborasi, dan nge-solve bareng. Bukan AI yang dikasih tombol terus disuruh jalan sendiri. Wakt
The Moment I Realised UI Testing Wasn't Enough Three years into my QA career, I thought I was doing well. I had a solid Selenium suite running. Regression coverage was green. Stakeholders were happy. Then a production incident happened. A payment API was returning incorrect amounts under a specific condition. The UI looked perfect — amounts displayed correctly after rounding. But the raw API response? Off by a significant margin. My entire test suite missed it. Every single test. Because I was only testing what users saw . Not what the system was actually doing . That incident changed how I approached QA forever. 👇 Why API Testing Is the Most Underrated Skill in QA Let me be direct about something. Most QA engineers treat API testing as a secondary skill. Something you do with Postman when a developer asks you to verify an endpoint. A quick sanity check before moving on. That's the wrong mental model entirely. Here's the truth after 7.5 years: The API layer is where your product actually lives. The UI is a presentation layer. It shows users a version of the truth. But the API? That's the truth itself. Data contracts, business logic, validation rules, error handling — all of it lives at the API layer. If you're only testing the UI, you're testing the packaging. Not the product. My API Testing Journey — Tool by Tool Let me walk you through exactly how my API testing practice evolved, and what each tool actually taught me. Stage 1 — Postman: Learning to Think in Requests Postman was my entry point. And it's still the tool I reach for first when exploring a new API. But most people use Postman wrong. They treat it like a manual testing tool — fire a request, check the response, move on. That's wasting 80% of what Postman can do. Here's how I actually use it: Collections + Environments = your real power combo // Environment variables — not hardcoded values {{ base_url }} /api/ v1 / users / {{ user_id }} // Switch between dev/staging/prod by changing one environment // No
If you use Claude daily, you've probably hit a wall mid-task. The reason it's so easy: Claude doesn't have one limit. It has several. A rolling 5-hour session window A weekly pool shared by all models Separate weekly caps per model (Opus, Sonnet, Claude Design) And the weekly pool is sneaky: Fable has no cap of its own and draws that shared pool down ~2× faster than Opus . So you can burn the week without realizing it. I wanted that state visible at a glance instead of digging through settings, so I built Claude Usage Monitor — a small browser extension for Chrome and Firefox. What it does It puts a color-coded % badge in your toolbar , and one click shows the full breakdown: Current 5-hour session + live countdown to reset Weekly all-models pool (with the Fable draw-down flagged on the card) Per-model weekly caps: Opus, Sonnet, Claude Design Daily Claude Code routine runs Extra-usage credits + prepaid balance for pay-as-you-go Auto-detects your plan (Pro / Max 5x / Max 20x / Team), so every number matches your subscription Six themes The privacy part (the part I cared about most) It's open source (MIT) and runs 100% locally — no backend, no analytics, no servers. A design decision I'm happy with: the host permissions are scoped to exactly four claude.ai endpoints (org list, usage stats, routine-run budget, prepaid balance). It physically can't read your chats, projects or files. Narrow permissions = less to trust, and less to exploit. One honest caveat: it reads claude.ai's own usage endpoints, so it can break if Anthropic changes them. Not affiliated with Anthropic. Try it It's free, no account needed (desktop Chrome & Firefox): 🔗 claude-monitor.com Chrome Web Store Firefox Add-ons Happy to hear what else you'd want tracked — drop a comment.
I take a lot of screenshots. The article I'll read later. The recipe I'll cook on Sunday. The movie name from someone's Instagram story. A job post, a product, a tender. Most of them die in my camera roll. So I built Chista — an iOS app that auto-imports every screenshot, classifies it with AI (Article, Product, Event, Reference, Media), and surfaces a one-tap action: Buy on Amazon , Add to Calendar , Reserve on OpenTable , etc. It shipped on the App Store thirty days after I started, for about $300 in total cost. The interesting part wasn't the app. It was what the build revealed. What I built Chista is a native iOS app + Python backend. iOS reads new screenshots in the background via PHPhotoLibraryChangeObserver , scoped to PHAssetMediaSubtype.photoScreenshot (so it literally can't see your other photos). Each new screenshot gets OCR'd on-device with Apple Vision , then the image + OCR text get POSTed to the backend. Backend sends the pair to OpenAI GPT-4o with a structured prompt that returns a CategorizationResult JSON: category, subtype, title, suggested action, extracted data (price, deadline, URL, etc.). Result gets persisted and pushed back to the inbox via Supabase real-time. That's the whole thing. The "magic moment" is just: you screenshot something, switch to Chista a few seconds later, it's already sorted with a contextual action button. Stack Layer Tool Why iOS app Swift 5.10, SwiftUI, StoreKit 2 iOS 17+, modern surface Backend FastAPI on Railway One-file ergonomics, fast cold starts Database + Auth Supabase Postgres + JWT auth out of the box AI OpenAI GPT-4o (Pro), gpt-4o-mini (Free) Tier-routed at categorization time Push APNs via aioapns Direct, no Firebase middleman Subscriptions StoreKit 2 + app-store-server-library Server-side JWS verification Affiliate routing Custom matrix in Supabase tables Amazon Associates wired, more pending Hosting (web) Cloudflare Pages Free, fast, never goes down No frameworks I wouldn't reach for again. What it cost Lin
A few months ago, I didn't expect that I'd be spending my days debugging authentication flows, opening pull requests, analyzing backend architectures, and building a Bitcoin education platform during a hackathon. Yet here we are. What started as curiosity about Bitcoin turned into one of the most intense learning experiences I've had as a builder, and honestly, I wouldn't trade it for anything. This is the story of how I joined Hack4Freedom Lagos 2026, helped build BitPath, contributed to open source, discovered OpenCode, and learned that software engineering is often just solving one problem after another until things somehow start working. How I Ended Up Building in Bitcoin My interest in Bitcoin didn't start from price charts or trading. What attracted me was the builder ecosystem around it. I've contributed to open source before, so I already appreciated the value of collaborative software development. But what stood out about Bitcoin was how deeply open source is woven into the culture. In many ecosystems, open source feels like an option. In Bitcoin, it feels like a foundation. Everywhere I looked, people were building in public, contributing to projects, improving documentation, reviewing code, and helping newcomers find their footing. That environment made me want to participate more deeply. When the opportunity came to join the Hack4Freedom Lagos 2026 hackathon, I said yes. The Project: BitPath Our team worked on BitPath, an AI-powered learn-and-earn platform designed to make Bitcoin education more accessible. The idea was simple: Instead of overwhelming learners with technical concepts, BitPath uses conversational learning experiences, AI tutoring, quizzes, progress tracking, and rewards to help users learn Bitcoin and financial literacy in a more engaging way. Our stack looked something like this: Frontend Next.js TypeScript Tailwind CSS Zustand Backend NestJS PostgreSQL Redis Queue processing Additional Services Google OAuth OpenAI APIs Lightning Network
A copy of Super Mario Bros., still in the box and sealed with its original sticker, just sold at Heritage Auctions for $3 million. That absolutely crushes the previous record of $2 million, also for a copy of Super Mario Bros., in 2021. That sale also came hot on the heels of a controversial auction […]
Six months ago, I could tell you which model to use for almost any job, and I would have said it with confidence. Today I hedge, and so does almost everyone I talk to who builds with these tools. The reason is simple. The ground keeps moving under us. Models get smarter on a schedule no one can forecast, and they get cheaper to run on a second schedule that is just as hard to predict. Both curves are bending at once, and they point in directions that change how I build and how I think you should build too. I spend my days crafting development, content and productivity workflows that lean on these models. I wire up agents, route tasks, and watch the bills. So this is not a far-off observation for me. It is the thing I am living with week to week, and it has forced me to rethink habits I held for years. This is not the usual story about a single breakthrough. It is four shifts happening together. Frontier performance is climbing past what most of us guessed was possible this year. Small models are getting good enough to run on a phone or a thirty-five dollar computer. The smart move has stopped being "pick the best model" and started being "build a system that picks for you." And a coding startup with a rocket company behind it is showing what happens when product, data, and compute sit under one roof. Let me take these one at a time. Then I want to show you what they add up to, because the sum is bigger than the parts. Performance Is Outrunning the Forecasts Start at the top of the market, where the most capable models live. Anthropic now ships a tier above its Opus line. The Fable and Mythos family is a class of model built for problems that smaller systems still fumble: long chains of reasoning, deep code work, research that needs to hold many threads at once. Claude Fable 5 carries extra safety work so it can go out to the public. A more powerful sibling, used inside a small set of trusted partners, stays behind tighter controls. The names are not the point. The p
Working with complex JSON payloads can quickly become a nightmare. You end up chaining .map() , .filter() , and .reduce() calls across multiple lines just to pull out a few nested values. Add optional chaining to avoid crashes and the code becomes nearly unreadable. There is a cleaner way - JSONata . It is a compact, purpose-built query and transformation language for JSON data. Think of it as XPath for XML, but designed from the ground up to work with JSON objects and arrays. What is JSONata? JSONata is an open-source project originally created by Andrew Coleman at IBM. It gives developers a declarative syntax to extract and reshape JSON data without writing procedural JavaScript loops. Where vanilla JS might take 15 lines, a JSONata expression often takes one. It is available as an npm package and integrates naturally into Node.js and TypeScript projects. Simple Path Navigation The foundation of JSONata is its dot-notation path traversal. Given a nested JSON object, you simply trace the path to the value you need: customer.address.city This returns the city value without any need for null checks or defensive coding. JSONata handles missing properties gracefully by returning undefined rather than throwing errors. Automatic Array Mapping When JSONata encounters an array during path traversal, it automatically maps across all items. There is no need to write an explicit .map() call: customer.orders.product This returns an array of all product names from every order in one clean expression. Inline Filtering You can filter arrays directly using bracket notation with a condition: customer.orders[price > 1000].product This returns only the products from orders where the price exceeds 1000. No .filter() callback required. Built-in Aggregation Functions JSONata ships with a solid set of built-in functions for math, strings, and arrays. Aggregating a set of values is straightforward: $sum(customer.orders.price) Other useful functions include $count() , $average() , $string(
The thing I'm building, App Store Analyzer, is a website that does one thing: it reads an iOS niche and writes a deep market analysis for indie devs. For a long time that analysis had one brain — and it spoke German. That made sense at the start. German is my home market and my own language, so I built the analysis logic in German first. I could actually feel whether the output was good or garbage, section by section, because I was reading it in the language I think in. It got deep. Reliable. I trusted it. Then it started to hurt. Every time I wanted the analysis in another language, I was basically running the whole expensive thinking step again from scratch. German code, German slugs, German routes, German everything — and a goal of serving 14 languages. The whole thing fought itself. So I rebuilt the brain in English. Not "translated the code" — rebuilt the canonical brain so English is the one source of truth. Now the engine thinks once in native English, and that single analysis gets translated and cached into 13 other languages . Generate once, translate many. It was not a clean ride. The lows. A refactor left a pile of undefined names and quietly 500'd my detail pages — live, in production, while I thought everything was fine. I misread a normal cache warm-up window as a dead backend more than once and "fixed" things that were never broken. I spent an embarrassing stretch hammering an endpoint with a wrong key, watching 403 scroll by, before realizing my terminal had eaten the line that set the key. Small things. Hours each. The highs. Two of them I didn't expect: It got cheaper , not just cleaner. I'm not paying for a full deep analysis per language anymore — one real generation, then lightweight translations. For a solo dev watching every API cent, that's the whole game. And the English brain was actually sharper . I ran the old German output against the new English one side by side, fully expecting English to be the weaker copy. It wasn't. In a few section
Sliding-Window Spend Guard for AI Agents: Catch the $47K Loop Per-Call Caps Miss A sliding-window spend guard sums what your agent has spent over the last N minutes and refuses the next call before it dispatches — which is the thing a per-call cap can't do. A per-call cap asks "is this one call too expensive?" The runaway loops that empty a budget are built from calls that each pass that check. The damage lives in the sum, not in any single call. In short: a sliding-window spend guard tracks a trailing window of calls and blocks the next one when cumulative spend or a repeated near-identical call breaches a per-window rule. In my run it stopped an Analyzer-Verifier ping-pong at call 12, $45.80 in, after a naive per-call $5 cap let all 12 through. Stdlib, keyless, runs in seconds. AI disclosure: I wrote window_guard.py with AI assistance and ran it myself before publishing. Every number in the output blocks below is pasted from a real run of that script on a fixture I'll show you. The $47K incident is someone else's, and I link the postmortem next to it. I label which is which. A $47K agent loop where every single call was fine In November 2025 a team woke up to a $47,000 bill from a single agent deployment. Four LangChain agents, talking to each other over A2A, and two of them — an Analyzer and a Verifier — got into a ping-pong. Analyzer hands work to Verifier, Verifier kicks it back, repeat. For 264 hours. The cost didn't spike. It escalated , week over week: $127, then $891, then $6,240, then $18,400. The author of the postmortem, Gabriel Anhaia, describes the root cause in a way I keep coming back to: the dashboard was green for eleven days, and there was no step cap, no per-conversation USD budget, no orchestrator deciding when the work was done ( dev.to/gabrielanhaia, Nov 2025 ). The dashboard showed the number. It just showed it after each call, never before the next one. A follow-up teardown by the Waxell team sharpened the line into the title of their piece:
From Confused to Confident: How I Finally Mastered GitHub Copilot in Every Situation I still remember the afternoon I rage-closed VS Code because Copilot kept suggesting the wrong function signatures — again . I had been treating it like a magic oracle, typing vague comments and expecting perfect code to rain down from the AI heavens. Spoiler: that's not how it works. After weeks of trial, error, and a few embarrassing pull request reviews, I cracked the code (pun intended). Here's everything I wish someone had told me about using GitHub Copilot accurately — across Chat , Plan , and Agent modes. 🧠 First, Understand What Copilot Actually Is Before diving into tips, let's reset expectations. GitHub Copilot is not a search engine. It's not Stack Overflow with a fancy UI. It's a context-aware AI assistant trained on massive amounts of code. That means: The quality of your output depends directly on the quality of your input . It works best when it has rich context — open files, good comments, clear naming. It can be wrong. Confidently wrong. Always review what it generates. With that mindset locked in, let's explore each mode. 💬 Copilot Chat: Your Pair Programmer in the Sidebar The first time I opened Copilot Chat, I typed: "fix my code." It stared back at me, basically confused. Of course it was — I hadn't told it which code, what was broken, or what I expected. Tips for Accurate Chat Usage 1. Be specific and contextual. Instead of: "Why isn't this working?" Try: "This useEffect hook in React runs on every render instead of only when userId changes. Here's the code: [paste snippet]. What's wrong?" The more context you give, the more surgical the answer. 2. Use slash commands to guide intent. Copilot Chat supports built-in commands that dramatically improve accuracy: /explain → Explains selected code in plain English /fix → Suggests a fix for a highlighted bug /tests → Generates unit tests for selected code /doc → Writes documentation for a function or class These aren'