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AI coding may not be helping as much as you think

A significant fraction of the money that people have paid for Generative AI has been for coding assistance. When I point to the positive uses of Generative AI, I invariably point to how GenAI serves as kind of valuable autocomplete for coding. In that context, a new study from METR, an AI benchmarking nonprofit, is shocking. METR ran a randomized control trial in the first half of this year “to see whether AI tool usage at the February–June 2025 frontier (primarily Cursor Pro) sped-up experien

Amazon launches Kiro, its own Claude-powered challenger to Windsurf and Codex

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now Amid the big news that Windsurf is being acquired by Cognition (after its founders went to Google), developers interested in AI-powered coding may be on the hunt for new alternatives. In a bit of fortuitous timing, today also saw Amazon’s release of Kiro, a new agentic integrated development environment (IDE) built to help developers move

Study finds AI tools made open source software developers 19 percent slower

When it comes to concrete use cases for large language models, AI companies love to point out the ways coders and software developers can use these models to increase their productivity and overall efficiency in creating computer code. However, a new randomized controlled trial has found that experienced open source coders became less efficient at coding-related tasks when they used current AI tools. For their study, researchers at METR (Model Evaluation and Threat Research) recruited 16 softwa

AI slows down open source developers. Peter Naur can teach us why

AI slows down open source developers. Peter Naur can teach us why. AI slows down open source developers. Peter Naur can teach us why. Metr recently published a paper about the impact AI tools have on open-source developer productivity1. They show that when open source developers working in codebases that they are deeply familiar with use AI tools to complete a task, then they take longer to complete that task compared to other tasks where they are barred from using AI tools. Interestingly the

Where are the iPhone’s WebKit-less browsers?

It’s been 16 months since a DMA ruling allowed iOS developers like Google and Mozilla to use their own browser engines in the EU, so… where are they? According to the Open Web Advocacy (OWA) — a nonprofit group of software engineers that advocates for the open web — Apple continues to place technical and financial restrictions on WebKit-alternative iOS browser engines that effectively stifle competition. OWA says these barriers include insufficient testing tools outside of the US, hostile legal

AI coding tools may not speed up every developer, study shows

Software engineer workflows have been transformed in recent years by an influx of AI coding tools like Cursor and GitHub Copilot, which promise to enhance productivity by automatically writing lines of code, fixing bugs, and testing changes. The tools are powered by AI models from OpenAI, Google DeepMind, Anthropic, and xAI that have rapidly increased their performance on a range of software engineering tests in recent years. However, a new study published Thursday by the non-profit AI research

AI coding tools can reduce productivity

The buzz about AI coding tools is unrelenting. To listen to the reports, startups are launching with tiny engineering teams, non-programmers are “vibe-coding” entire apps, and the job market for entry-level programmers is crashing. But according to a METR experiment conducted in the spring of 2025, there’s at least one cohort that AI tools still aren’t serving. METR performed a rigorous study (blog post, full paper) to measure the productivity gain provided by AI tools for experienced developer

Not So Fast: AI Coding Tools Can Reduce Productivity

The buzz about AI coding tools is unrelenting. To listen to the reports, startups are launching with tiny engineering teams, non-programmers are “vibe-coding” entire apps, and the job market for entry-level programmers is crashing. But according to a METR experiment conducted in the spring of 2025, there’s at least one cohort that AI tools still aren’t serving. METR performed a rigorous study (blog post, full paper) to measure the productivity gain provided by AI tools for experienced developer

Measuring the impact of AI on experienced open-source developer productivity

We conduct a randomized controlled trial (RCT) to understand how early-2025 AI tools affect the productivity of experienced open-source developers working on their own repositories. Surprisingly, we find that when developers use AI tools, they take 19% longer than without—AI makes them slower. We view this result as a snapshot of early-2025 AI capabilities in one relevant setting; as these systems continue to rapidly evolve, we plan on continuing to use this methodology to help estimate AI accel

Measuring the Impact of AI on Experienced Open-Source Developer Productivity

We conduct a randomized controlled trial (RCT) to understand how early-2025 AI tools affect the productivity of experienced open-source developers working on their own repositories. Surprisingly, we find that when developers use AI tools, they take 19% longer than without—AI makes them slower. We view this result as a snapshot of early-2025 AI capabilities in one relevant setting; as these systems continue to rapidly evolve, we plan on continuing to use this methodology to help estimate AI accel

Red Hat just expanded free access to RHEL for business developers

John Keeble/Getty Images It's always been easy for programmers to get started with Linux. Just download one of the many free distros, learn some C, and you're in business. Also: SUSE launches new European digital sovereignty support service to meet surging demand Learning how to use Red Hat Enterprise Linux (RHEL) was a bit harder. Fortunately, Red Hat made it easy for developers to get started. In 2016, the Linux giant started offering free RHEL to members of its Red Hat Developer Program. T

Apple appeals 500 million euro EU fine over App Store policies

Two young men stand inside a shopping mall in front of a large illuminated Apple logo seen through a window in Chongqing, China, on June 4, 2025. Apple on Monday appealed what it called an "unprecedented" 500 million euro ($586 million) fine issued by the European Union for violating the bloc's Digital Markets Act. "As our appeal will show, the EC [European Commission] is mandating how we run our store and forcing business terms which are confusing for developers and bad for users," the compan

Apple appeals EU’s €500M fine over App Store payment restraints

In Brief Apple on Monday filed an appeal against the EU’s decision to fine the company €500 million (about $580 million) for not complying with rules that mandate companies to let developers steer users outside the App Store for making purchases, according to multiple reports. The European Commission issued the fine in April, saying that Apple failed to comply with the Digital Markets Act (DMA) rules to allow developers to accept payments for their apps outside Apple’s ecosystem. Apple revise

Continue (YC S23) is hiring software engineers in San Francisco

Why you should join Continue We believe there is an opportunity to create a future where developers are amplified, not automated. This is why we are enabling developers to create, share, and use custom AI code assistants with our open-source IDE extensions and hub of models, rules, prompts, docs, and other building blocks. Headquartered in San Francisco, Continue (YC S23) is funded by Heavybit and angels like Julien Chaumond (co-founder of Hugging Face), Lisha Li (founder of Rosebud AI), and F

Locality of Behaviour (2020)

Locality of Behaviour (LoB) Carson Gross May 29, 2020 “The primary feature for easy maintenance is locality: Locality is that characteristic of source code that enables a programmer to understand that source by looking at only a small portion of it.” – Richard Gabriel Locality of Behaviour is the principle that: The behaviour of a unit of code should be as obvious as possible by looking only at that unit of code The LoB principle is a simple prescriptive formulation of the quoted statement

Brazil’s antitrust watchdog says Apple must face penalties over App Store restrictions [U]

Apple’s week is off to a rough start. First, Proton filed a class action lawsuit in the U.S. Almost simultaneously, a judge in New Jersey rejected Apple’s attempt to dismiss a federal antitrust case. And on Monday night, things got a little worse: CADE, Brazil’s antitrust watchdog, formally recommended that Apple be sanctioned for the “imposition of the exclusive use of its payment system by app developers and the restriction on the distribution and commercialization of third-party digital serv

Brazil’s antitrust watchdog says Apple must face penalties over NFC restrictions

Apple’s week is off to a rough start. First, Proton filed a class action lawsuit in the U.S. Almost simultaneously, a judge in New Jersey rejected Apple’s attempt to dismiss a federal antitrust case. And on Monday night, things got a little worse: CADE, Brazil’s antitrust watchdog, formally recommended that Apple be sanctioned for restricting access to the iPhone’s NFC chip and forcing developers to use Apple Pay. In its ruling, CADE’s General Superintendence said Apple’s behavior creates “art

Proton Mail developer sues Apple in the U.S., says App Store model breaks antitrust laws

Privacy-focused Swiss tech company Proton, best known for its encrypted email service Proton Mail, is suing Apple in the United States on behalf of “millions” of developers around the world. Here are the details. The proposed class action, filed Monday in California (via Reuters), claims Apple has: “eliminated competition and extracted supracompetitive profits from app developers through a web of exclusionary conduct.” Proton says the lawsuit represents millions of iOS developers who are subje

Resident Evil 9: Why Isn't Leon Returning? Because Capcom Wants You to Feel the Horror

Capcom held an event Thursday to show off some of its big games coming soon and titles it has already released. The star of the show was Resident Evil Requiem, where the developers of the game made it clear that Leon Kennedy will not return, although it's hard to fully believe the word of Capcom as it's been known to swerve expectations. Resident Evil: Requiem, also referred to as Resident Evil 9, will focus on Grace Ashcroft, an FBI analyst, allowing players to experience the horror from the c

Senators reintroduce App Store bill to rein in 'gatekeeper power'

Update: Apple has responded to the reintroduction of the bill with a statement provided to 9to5Mac. See full statement below. The App Store is back under scrutiny from lawmakers in Washington. A bipartisan group of senators has reintroduced the 2021 Open App Markets Act, a bill aimed at curbing the gatekeeper power that Apple and Google hold over the so-called “mobile app economy.” Here’s what they’re going for. If passed, the legislation would effectively force Apple and Google (who are not s

Apple announces sweeping App Store changes in the EU

Apple has announced several major changes to its App Store guidelines in the European Union as part of its ongoing efforts to comply with the Digital Markets Act. Policy changes First, Apple has announced a set of policy changes for developers with apps distributed in the European Union. These changes apply to all developers, regardless of whether or not they’ve opted into Apple’s alternative business terms in the EU. Previously, Apple allowed developers under the EU terms to add a single sta

Apple overhauls EU App Store rules following penalty

Apple has introduced new App Store changes in the EU in an attempt to avoid being further penalized under the European Union’s Digital Markets Act (DMA). On Thursday, the company announced a new tier system for its Store Services fee that’s applied to purchases made outside apps, and it will only give developers access to the full set of App Store features if they give Apple a larger commission. Tier 1 of the Store Services fee will provide developers with only basic App Store features for a ch

Apple updates the rules for its EU App Store by adding more complicated fees

Apple on Thursday announced a series of updates to its developer policies to comply with the EU’s Digital Markets Act (DMA). The news, which was expected, arrived just in time to meet the deadline of June 26, after which the iPhone maker would risk new fines. The changes involve both how app developers can communicate with their customers and the fees Apple charges. EU regulators had earlier fined Apple €500 million for non-compliance with the DMA and were threatening to impose further penaltie

Senators reintroduce App Store bill to rein in ‘gatekeeper power in the app economy’ [U]

Update: Apple has responded to the reintroduction of the bill with a statement provided to 9to5Mac. See full statement below. The App Store is back under scrutiny from lawmakers in Washington. A bipartisan group of senators has reintroduced the 2021 Open App Markets Act, a bill aimed at curbing the gatekeeper power that Apple and Google hold over the so-called “mobile app economy.” Here’s what they’re going for. If passed, the legislation would effectively force Apple and Google (who are not s

Apple announces sweeping App Store changes in the EU

Apple has announced several major changes to its App Store guidelines in the European Union as part of its ongoing efforts to comply with the Digital Markets Act. Policy changes First, Apple has announced a set of policy changes for developers with apps distributed in the European Union. These changes apply to all developers, regardless of whether or not they’ve opted into Apple’s alternative business terms in the EU. Previously, Apple allowed developers under the EU terms to add a single sta

US Senators introduce bipartisan bill to enable third-party app stores on iPhones

In a nutshell: Five US senators have reintroduced a bipartisan bill to curb Apple's and Google's dominance in mobile app distribution. According to the lawmakers, the legislation will outlaw restrictive trade practices that allow the two tech giants control the global app economy. The "Open App Markets Act," introduced by Senators Marsha Blackburn, Richard Blumenthal, Mike Lee, Amy Klobuchar, and Dick Durbin, aims to promote competition and strengthen consumer protections in the evolving mobile

Better Auth, by a self-taught Ethiopian dev, raises $5M from Peak XV, YC

It’s rare to see a solo founder building a widely adopted developer infrastructure tool. Even more so if the founder happens to be from Africa. Bereket Engida, a self-taught programmer from Ethiopia, is quietly building what some developers say is the best authentication tool they’ve ever used. Engida’s startup, Better Auth, offers an open source framework that promises to simplify how developers manage user authentication, and it’s caught the attention of some big name investors. It recently r

Senators reintroduce App Store bill to rein in ‘gatekeeper power in the app economy’

The App Store is back under scrutiny from lawmakers in Washington. A bipartisan group of senators has reintroduced the 2021 Open App Markets Act, a bill aimed at curbing the gatekeeper power that Apple and Google hold over the so-called “mobile app economy.” Here’s what they’re going for. If passed, the legislation would effectively force Apple and Google (who are not specifically named in the text) to allow sideloading, support third-party app stores, permit alternate payment systems, and stop

Google unveils Gemini CLI, an open source AI tool for terminals

Google is launching a new agentic AI tool that will put its Gemini AI models closer to where developers are already coding. The company announced on Wednesday the launch of Gemini CLI, an agentic AI tool designed to run locally from your terminal. The new tool connects Google’s Gemini AI models to local codebases, and it allows developers to make natural language requests, such as asking Gemini CLI to explain confusing sections of code, write new features, debug code, or run commands. Gemini C

Better Auth, an authentication tool by a self-taught Ethiopian dev, raises $5M from Peak XV, YC

It’s rare to see a solo founder building a widely adopted developer infrastructure tool. Even more so if the founder happens to be from Africa. Bereket Engida, a self-taught programmer from Ethiopia, is quietly building what some developers say is the best authentication tool they’ve ever used. Engida’s startup, Better Auth, offers an open source framework that promises to simplify how developers manage user authentication, and it’s caught the attention of some big name investors. It recently r