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Tau² benchmark: How a prompt rewrite boosted GPT-5-mini by 22%

news.ycombinator.com Przemysław Hejman 2025-09-23 14:03:24

Now on the front page of Hacker News — join the discussion. In a recent post, we introduced the Tau² benchmark, a framework for benchmaring LLMs. Today we’re sharing a surprising discovery we made while using it: a simple prompt rewrite boosted a small model’s success rate by over 20%. This post is a deep-dive on how we found and fixed this performance bottleneck by making subtle changes to agent policies. Benchmarking LLMs with Tau² On the recent OpenAI Summer Update, we have seen that GPT-5

Topics: agent ai benchmark gpt mini

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Apple Photos app corrupts images

news.ycombinator.com Unknown 2025-09-23 12:07:44

The Apple Photos app sometimes corrupts images when importing from my camera. I just wanted to make a blog post about it in case anyone else runs into the problem. I’ve seen other references to this online, but most of the people gave up trying to fix it, and none of them went as far as I did to debug the issue. I’ll try to describe the problem, and the things I’ve tried to do to fix it. But also note that I’ve (sort of) given up on the Photos app too. Since I can’t trust it to import photos fr

Topics: app camera corrupted images photos

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Here’s who is actually using ChatGPT — and how they are using it

theverge.com Robert Hart 2025-09-24 02:04:29

Robert Hart is a London-based reporter at The Verge covering all things AI and Senior Tarbell Fellow. Previously, he wrote about health, science and tech for Forbes. Posts from this author will be added to your daily email digest and your homepage feed. OpenAI this week released what it says is the largest study yet of how people are using ChatGPT, revealing fresh insights on who is using the technology and what they are using it for. The big surprise was finding out that most ChatGPT chats a

Topics: chatgpt image nber use work

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AT&T's new AI receptionist will answer calls for you - and block spam

zdnet.com Lance Whitney 2025-09-24 06:23:46

AT&T Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways AT&T's digital receptionist will use AI to screen your calls. The goal is to determine if a call is legitimate or spam. The feature will roll out this year as a test for select AT&T customers. How often do you receive a call from an unknown number and debate whether to answer it? Spam calls continue to plague us all, often making us hesitant to answer our phones unless we know who's calling. Now AT&T is turni

Topics: ai answer receptionist spam test

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From Startup Battlefield to the Disrupt Stage: Discord founder Jason Citron returns to TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-09-24 06:30:00

More than a decade ago, Jason Citron took the Disrupt stage to pitch his early-stage company in the Startup Battlefield competition at TechCrunch Disrupt as a scrappy founder pitching his vision. Today, he’s built Discord into one of the most successful consumer platforms of its era — valued in the billions and redefining how communities connect, game, and share online. This October, he returns to the Disrupt Stage with “From Startup Battlefield to Discord,” a session that unpacks his scaling j

Topics: citron disrupt journey stage startup

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Tau² Benchmark: How a Prompt Rewrite Boosted GPT-5-Mini by 22%

news.ycombinator.com Przemysław Hejman 2025-09-24 10:03:24

In a recent post, we introduced the Tau² benchmark, a framework for benchmaring LLMs. Today we’re sharing a surprising discovery we made while using it: a simple prompt rewrite boosted a small model’s success rate by over 20%. This post is a deep-dive on how we found and fixed this performance bottleneck by making subtle changes to agent policies. Benchmarking LLMs with Tau² On the recent OpenAI Summer Update, we have seen that GPT-5 model has made significant strides in agentic tasks. To vali

Topics: agent ai benchmark gpt mini

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Did a ‘KPop Demon Hunters’ Songwriter Really Use ChatGPT to Write ‘Soda Pop’? [Updated]

gizmodo.com Justin Carter 2025-09-23 21:00:04

Netflix hit KPop Demon Hunters has stayed in the conversation in large part because of its blockbuster soundtrack, but now one of those songs has come under scrutiny for potentially getting an assist from ChatGPT. Update 9/17 9am ET: The English-language article released by Joongang Daily has been updated to include a correction and remove the original quote about “Soda Pop”, bringing it more in line with the Korean-language piece. The original piece is as follows. In a recent discussion in Se

Topics: chatgpt demon hunters kpop pop

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How much RAM do you really need in 2025? I broke it down for Mac and Windows users

zdnet.com Cesar Cadenas 2025-09-24 13:00:00

Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways RAM allows computers run fast and optimally. 16GB is now the standard for PCs and laptops. Heavy users may need more RAM. Know when to upgrade. I used to struggle when shopping for a new computer. Over time, I learned to narrow things down to what I call the "performance trifecta" -- three main components you should be mindful of when buying a laptop or desktop: processor, storage drive, and RAM. Th

Topics: computer laptop memory ram windows

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OpenAI releases first-of-kind study revealing how people are using ChatGPT for everyday tasks

cnbc.com Dylan Butts Shreya Ghosal 2025-09-24 21:56:34

Illustration of the ChatGPT App on the iOS App Store displayed on a phone screen. Despite rapid adoption of large language models like OpenAI's ChatGPT, few comprehensive studies have delved into exactly how the technology is being used in everyday life — that is, until now. On Tuesday, researchers, including those from OpenAI, released a first-of-its-kind study that examines who was using ChatGPT and for what purposes based on internal messages sent to ChatGPT on consumer plans. Amongst the

Topics: app chatgpt economist openai people

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PureVPN IPv6 Leak

news.ycombinator.com Unknown 2025-09-24 22:10:14

In late August 2025, I submitted two security reports to PureVPN under their VDP. Three weeks later, I’ve received no response, so I decided to publish the findings to inform other users. The issues affect both their GUI (v2.10.0) and CLI (v2.0.1) clients on Linux (tested on Ubuntu 24.04.3 LTS, kernel 6.8.0, iptables-nft backend). Here’s what I found. 1. IPv6 Leaks Off-Tunnel After toggling Wi-Fi or resuming from suspend, the PureVPN client fails to restore IPv6 protections: CLI (IKS enabled

Topics: accept input iptables ipv6 purevpn

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Apple Photos App Corrupts Images

news.ycombinator.com Unknown 2025-09-24 23:07:44

The Apple Photos app sometimes corrupts images when importing from my camera. I just wanted to make a blog post about it in case anyone else runs into the problem. I’ve seen other references to this online, but most of the people gave up trying to fix it, and none of them went as far as I did to debug the issue. I’ll try to describe the problem, and the things I’ve tried to do to fix it. But also note that I’ve (sort of) given up on the Photos app too. Since I can’t trust it to import photos fr

Topics: app camera corrupted images photos

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The New York Times Mini Crossword Is Behind a Paywall: Here's a Way to Play

cnet.com See Full Bio 2025-09-24 21:00:04

I'm a fan of the New York Times Mini Crossword -- a sporty, streamlined companion to the newspaper's legendary regular daily crossword. Typically, the Mini Crossword (we publish the answers daily) has roughly a dozen clues to work through -- six across-clues and six down-clues -- and you can complete it in less than a minute if all goes well. It makes me feel smart, unlike the big crossword, which sometimes makes me throw things. But in late August, some Mini Crossword players suddenly ran int

Topics: crossword free games subscription times

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ChatGPT will verify your age soon, in attempt to protect teen users

zdnet.com Sabrina Ortiz 2025-09-24 12:15:00

Elyse Betters Picaro / ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways OpenAI will add age verification to ChatGPT. Teens will have more safety measures, compromising some freedom. Adults will retain the ability to use the chatbot as they want. Chatbot users are increasingly confiding in tools like ChatGPT for sensitive or personal matters, including mental health issues. The consequences can be devastating: A teen boy took his own life after spending hour

Topics: ai altman chatgpt openai users

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Don’t worry, the Apple MacBook Air M4 is back to its record-low price!

androidauthority.com Unknown 2025-09-24 21:19:33

We have been kind of spoiled. The Apple MacBook Air has been discounted to $799 for so long that it almost feels like that’s its regular price. The price suddenly jumped up earlier this month, though, which made us worry a bit. Don’t fret, though, the price has come back down! Buy the Apple MacBook Air M4 13-inch for $799 ($200 off) This offer is available from Amazon, and the discount applies to all color versions available. These include Midnight, Silver, Sky Blue, and Starlight. This $799 d

Topics: air apple laptop macbook price

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Apple Vision Pro gains support for digital prism correction

9to5mac.com Dylan Mcdonald 2025-09-25 00:02:56

A longstanding limitation of Apple Vision Pro was that it did not offer support for vision prescriptions with a prism value. With visionOS 26, however, you can now enter the prism values from your prescription and visionOS will adapt through software. Since the launch of Apple Vision Pro, there has been a warning for those looking to buy the ZEISS Optical Inserts: A very small percentage of people have a prism value added to their glasses prescription. At this time, ZEISS Optical Inserts based

Topics: apple base prescription prism value

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Did a ‘KPop Demon Hunters’ Songwriter Really Use ChatGPT to Write ‘Soda Pop’?

gizmodo.com Justin Carter 2025-09-24 22:00:04

Netflix hit KPop Demon Hunters has stayed in the conversation in large part because of its blockbuster soundtrack, but now one of those songs has come under scrutiny for potentially getting an assist from ChatGPT. In a recent discussion in Seoul for OpenAI’s newly opened Korean office, songwriter Vince reportedly claimed he used the controversial technology to help pen the song “Soda Pop,” performed in the movie by the demonic Saja Boys. He is credited as one of several co-writers on the track,

Topics: chatgpt demon hunters kpop pop

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AT&T is launching a digital bouncer to block unwanted calls

androidauthority.com Unknown 2025-09-25 10:09:03

Edgar Cervantes / Android Authority TL;DR AT&T is testing out an agentic AI tool that can identify and filter out robocallers. The “digital receptionist” screens calls to determine if the caller is human, how urgent the call is, and whether it meets your customized criteria before passing the call to you. If the caller won’t identify themselves, it’s a wrong number, or the call doesn’t meet your criteria, the receptionist will either disconnect or take a message. Are you tired of being bothe

Topics: ai caller digital receptionist tool

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OpenAI Wants You to Prove You’re Not a Child

gizmodo.com Aj Dellinger 2025-09-25 07:45:36

If you are filled with too much childlike wonder, you might get relegated to a more kid-friendly version of ChatGPT. OpenAI announced Tuesday that it plans to implement a new age verification system that will help filter underage users into a new chatbot experience that is more age-appropriate. The change comes as the company faces increased scrutiny from lawmakers and regulators over how underage users interact with its chatbot. To determine a user’s age, OpenAI will use an age prediction syst

Topics: age chatgpt openai user users

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ChatGPT may soon require ID verification from adults, CEO says

arstechnica.com Unknown 2025-09-25 14:09:22

On Tuesday, OpenAI announced plans to develop an automated age-prediction system that will determine whether ChatGPT users are over or under 18, automatically directing younger users to a restricted version of the AI chatbot. The company also confirmed that parental controls will launch by the end of September. In a companion blog post, OpenAI CEO Sam Altman acknowledged the company is explicitly "prioritizing safety ahead of privacy and freedom for teens," even though it means that adults may

Topics: adults age chatgpt company openai

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Hades returns to Game Pass on September 19

engadget.com Unknown 2025-09-25 18:00:55

In what's most definitely (not) the biggest Hades news of the week, the acclaimed game is coming to Game Pass. Not the long-awaited sequel, mind you, but the 2020 original. At least subscribers can catch up on the first game while waiting out the sequel's Switch exclusivity window. Hades will be available for Game Pass Ultimate, PC, and Standard tiers. This isn't the roguelike's first Game Pass rodeo. It was on Microsoft's service from August 2021 to 2022. It returns this September 19, the same

Topics: advertisement game hades pass september

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Gemini overtakes ChatGPT on App Store, as its Nano Banana AI model drives downloads up 45%

techcrunch.com Sarah Perez 2025-09-25 22:07:40

Gemini’s mobile adoption has been soaring since the August launch of its Nano Banana image editor model, which has received positive reviews, particularly from users who say they can now more easily perform complex edits and create realistic images. The app has climbed to the top of global app stores’ charts and has seen a 45% month-over-month increase in downloads in the month of September so far, according to new data provided by app intelligence firm Appfigures. Though the month is only half

Topics: app gemini million month september

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Writing an operating system kernel from scratch – RISC-V/OpenSBI/Zig

news.ycombinator.com Uros Popovic 2025-09-23 09:36:23

Posted on: September 13, 2025 | at 09:30 AM Follow @popovicu94 I recently implemented a minimal proof of concept time-sharing operating system kernel on RISC-V. In this post, I’ll share the details of how this prototype works. The target audience is anyone looking to understand low-level system software, drivers, system calls, etc., and I hope this will be especially useful to students of system software and computer architecture. This is a redo of an exercise I did for my undergraduate cours

Topics: interrupt kernel sp stack thread

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OpenAI Is Building a Teen-Friendly Version of ChatGPT

cnet.com See Full Bio 2025-09-26 02:23:23

OpenAI announced today that it's developing a "different ChatGPT experience" tailored for teenagers, a move that underscores growing concerns about the impact of AI chatbots on young people's mental health. The new teen mode is part of a broader safety push by the company in the wake of a lawsuit by a family who alleged ChatGPT's lack of protections contributed to the death by suicide of their teenage son. The changes include age-prediction technology to keep kids under 18 out of the standard v

Topics: chatgpt emergency openai safety teen

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Waymo’s Tekedra Mawakana on Scaling Self-Driving Beyond the Hype

techcrunch.com Techcrunch Events 2025-09-26 02:35:00

Autonomous vehicles have long been touted as “just around the corner,” but the reality of bringing self-driving cars to the streets is far from simple. At TechCrunch Disrupt 2025 — October 27–29 at Moscone West in San Francisco — Waymo co-CEO Tekedra Mawakana joins the Disrupt Stage for a wide-ranging conversation on the true state of AVs and where the industry goes from here. Inside the self-driving reality check While headlines often highlight crashes, controversies, or overblown promises, M

Topics: autonomous disrupt headlines mawakana waymo

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iOS 26.1 beta is coming: When to expect the next update

9to5mac.com Ryan Christoffel 2025-09-26 10:34:04

iOS 26 is now available for all users, but beta testers who have had the update for months may now wonder when Apple plans to debut the first iOS 26.1 beta. Here’s when to expect the next beta update. Apple’s history indicates iOS 26.1 beta will arrive this week or next iOS 26 released on Monday, September 15. Here’s how that compares to prior years: iOS 18: Monday, September 16 iOS 17: Monday, September 18 iOS 16: Monday, September 12 iOS 15: Monday, September 20 As you can see, there’s

Topics: 26 beta ios monday september

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Following teen suicide, OpenAI explores automatic underage user restrictions

engadget.com Unknown 2025-09-26 10:19:49

OpenAI is developing a system designed to automatically identify teen users and restrict their usage of ChatGPT. In a blog post published Tuesday, the company said the new experience would come with age-appropriate policies, including a block of graphic sexual content. "In cases of acute distress," the system will also have the capability to contact law enforcement to ensure user safety. In scenarios where ChatGPT can't definitively estimate the age of a user, it will default them to the new gat

Topics: chatgpt company new openai teen

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OpenAI to launch ChatGPT for teens with parental controls as company faces scrutiny over safety

cnbc.com Ashley Capoot 2025-09-26 14:47:34

OpenAI CEO Sam Altman walks on the day of a meeting of the White House Task Force on Artificial Intelligence (AI) Education in the East Room at the White House in Washington, D.C., U.S., September 4, 2025. OpenAI on Tuesday announced it will launch a dedicated ChatGPT experience with parental controls for users under 18 years old as the artificial intelligence company works to enhance safety protections for teenagers. When OpenAI identifies that a user is a minor, they will automatically be di

Topics: chatgpt companies experience openai safety

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Siri just got five surprise iOS 26 features, here’s what’s new

9to5mac.com Ryan Christoffel 2025-09-26 14:05:08

Siri hasn’t had the best year, largely owing to major feature delays amid ever-stronger AI competition. While the big Siri upgrades we’ve been waiting for are reportedly coming next spring, Apple has five surprise new features available now in iOS 26. iOS 26 makes Siri’s existing Apple Intelligence features more powerful and useful Apple launched iOS 26 yesterday to all users, and simultaneously published a document outlining new features in more depth than ever before. Surprisingly, the docum

Topics: 26 apple chatgpt ios siri

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iOS 26 gives Apple’s Home app new automation features

9to5mac.com Ryan Christoffel 2025-09-26 14:49:17

One of the promises of the smart home is that it, in theory, should intelligently adapt and respond to your needs. iOS 26 provides a key upgrade in that department with new Adaptive Temperature features in the Home app to automate your thermostat. Adaptive Temperature in iOS 26’s Home app provides two benefits During the iOS 26 beta cycle, evidence in code revealed new Adaptive Temperature features in the works for Apple’s Home app. It was unknown if these features would be ready for iOS 26’s

Topics: adaptive apple home temperature thermostat

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Looking for an laptop with an OLED? Here's one I recommend (and it's on sale)

zdnet.com Kyle Kucharski 2025-09-26 14:07:00

Asus Vivobook S 15 ZDNET's key takeaways The Vivobook S 15, Asus' first Copilot+ PC, is currently on sale on Amazon for $1,069. It's sleek and lightweight with a gorgeous 120Hz OLED display, great battery life, and snappy performance. Users could run into the usual compatibility issues seen on Arm-compatible devices, and battery settings should be managed to get the most out of its longevity. View now at Amazon Follow ZDNET: Add us as a preferred source on Google. Asus' first Copilot+ PC wit

Topics: 15 battery laptop performance vivobook

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Latest Tech News

Tau² benchmark: How a prompt rewrite boosted GPT-5-mini by 22%

Apple Photos app corrupts images

Here’s who is actually using ChatGPT — and how they are using it

AT&T's new AI receptionist will answer calls for you - and block spam

From Startup Battlefield to the Disrupt Stage: Discord founder Jason Citron returns to TechCrunch Disrupt 2025

Tau² Benchmark: How a Prompt Rewrite Boosted GPT-5-Mini by 22%

Did a ‘KPop Demon Hunters’ Songwriter Really Use ChatGPT to Write ‘Soda Pop’? [Updated]

How much RAM do you really need in 2025? I broke it down for Mac and Windows users

OpenAI releases first-of-kind study revealing how people are using ChatGPT for everyday tasks

PureVPN IPv6 Leak

Apple Photos App Corrupts Images

The New York Times Mini Crossword Is Behind a Paywall: Here's a Way to Play

ChatGPT will verify your age soon, in attempt to protect teen users

Don’t worry, the Apple MacBook Air M4 is back to its record-low price!

Apple Vision Pro gains support for digital prism correction

Did a ‘KPop Demon Hunters’ Songwriter Really Use ChatGPT to Write ‘Soda Pop’?

AT&T is launching a digital bouncer to block unwanted calls

OpenAI Wants You to Prove You’re Not a Child

ChatGPT may soon require ID verification from adults, CEO says

Hades returns to Game Pass on September 19

Gemini overtakes ChatGPT on App Store, as its Nano Banana AI model drives downloads up 45%

Writing an operating system kernel from scratch – RISC-V/OpenSBI/Zig

OpenAI Is Building a Teen-Friendly Version of ChatGPT

Waymo’s Tekedra Mawakana on Scaling Self-Driving Beyond the Hype

iOS 26.1 beta is coming: When to expect the next update

Following teen suicide, OpenAI explores automatic underage user restrictions

OpenAI to launch ChatGPT for teens with parental controls as company faces scrutiny over safety

Siri just got five surprise iOS 26 features, here’s what’s new

iOS 26 gives Apple’s Home app new automation features

Looking for an laptop with an OLED? Here's one I recommend (and it's on sale)

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