/goal and Codex will keep on looping until it evaluates that the goal has been completed... or the configured token budget has been exhausted.
It looks like the feature is mainly implemented though the goals/continuation.md and goals/budget_limit.md prompts, which are automatically injected at the end of a turn.
Via @fcoury
Tags: ai, openai, prompt-engineering, generative-ai, llms, coding-agents, system-prompts, codex-cli, agentic-engineering
Daring Fireball
• John Gruber
Our evaluation of OpenAI's GPT-5.5 cyber capabilities
The UK's AI Security Institute previously evaluated Claude Mythos: now they've evaluated GPT-5.5 for finding security vulnerability and found it to be comparable to Mythos, but unlike Mythos it's generally available right now.Tags: ai, openai, generative-ai, llms, anthropic, claude, ai-security-research, gpt
netnewswire.blog/2026/04/28/netnewswire-now-getting-feed-images.html
Makes sense. In fact, FeedCity only uses the images and/or icons specified directly with the feed.
Eventually I should probably fetch the icons from the website as a fallback. But c’mon: just include the icons directly in the feeds, please.
In NetNewsWire 7.0.5 we made a change to get the feed image from RSS via the image element.
Makes sense. In fact FeedCity only uses the images and/or icons specified directly with the feed.
Eventually I should probably fetch the icons from the website as a fallback. But c'mon: just include the icons directly in the feeds, please.
In case anyone else likes to follow updates from the speakers at Beyond Tellerrand conference 2026, I made my list on FeedCity public.
Unfortunately, only a few speakers have a feed. But better few than no one.
Feeds by speakers at Beyond Tellerrand conference Düsseldorf 2026
It's a common misconception that we can't tell who is using LLM and who is not. I'm sure we didn't catch 100% of LLM-assisted PRs over the past few months, but the kind of mistakes humans make are fundamentally different than LLM hallucinations, making them easy to spot. Furthermore, people who come from the world of agentic coding have a certain digital smell that is not obvious to them but is obvious to those who abstain. It's like when a smoker walks into the room, everybody who doesn't smoke instantly knows it.
I'm not telling you not to smoke, but I am telling you not to smoke in my house.
— Andrew Kelley, Creator of Zig
Tags: zig, llms, ai, generative-ai
We need RSS for sharing abundant vibe-coded apps
Matt Webb:I would love an RSS web feed for all those various tools and apps pages, each item with an “Install” button. (But install to where?)
The lesson here is that when vibe-coding accelerates app development, apps become more personal, more situated, and more frequent. Shipping a tool or a micro-app is less like launching a website and more like posting on a blog.
This inspired me to have Claude add an Atom feed (and icon) to my /elsewhere/tools/ page, which itself is populated by content from my tools.simonwillison.net site.
Tags: atom, matt-webb, rss, ai, vibe-coding
Colossal
• Grace Ebert
Monica Rohan's patterned fabrics and indoor furnishings once again make their way outside, although now, humans are nowhere to be found.
Do stories and artists like this matter to you? Become a Colossal Member today and support independent arts publishing for as little as $7 per month. The article In Monica Rohan’s Paintings, Tablecloths and Chairs Uncannily Perch in Remote Landscapes appeared first on Colossal.
Longreads
• Peter Rubin
"Ultrafinitism, a philosophy that rejects the infinite, has long been dismissed as mathematical heresy. But it is also producing new insights in math and beyond."
Longreads
• Carolyn Wells
"The rise of pay-to-play in classical music."
Colossal
• Kate Mothes
SpY's latest installation suspends metallic discs inside of an industrial space as part of Bright Festival.
Do stories and artists like this matter to you? Become a Colossal Member today and support independent arts publishing for as little as $7 per month. The article Dozens of Suspended ‘Halos’ Glimmer in a Florentine Factory appeared first on Colossal.
Come on everyone, we’re going to Cursor Camp!
Daring Fireball
• John Gruber
600 words from Hartley Charlton at MacRumors expounding upon a wacko post on Weibo suggesting that Apple is debating dropping MagSafe from all iPhones (which post, translated to English, is only 70-some words). Given that last year’s 16e didn’t have MagSafe and this year’s 17e does, you don’t need a pseudonymous Chinese weatherman to know which way the MagSafe wind is blowing in Cupertino.
Link: macrumors.com/2026/04/29/apple-questioning-iphone-magsafe/
Daring Fireball
• John Gruber
Brilliant statue, hilarious intro video. The greatest artist of our age.
