GPT-6 Astra Solves a WWI German Radio Cipher — prinz

A model is credited with reading a coded German naval message from 1918. The thread on Hacker News asks the obvious next question: with which key, and who checked it?

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I Built Non-Autoregressive Decision Models with RL a Year Ago — Nandakishor Mukkunnoth

A year-old open model, a funded lab's 'breakthrough', and the measurement that matters: a classifier's own confidence never warns you when it cannot read the input.

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AI-Generated Posters Don't Have to Be Horrible — John Hartnup

The village-fayre poster everyone recognises is one style repeated until it irritates. Naming an actual movement — Bauhaus, risograph, 1980s fanzine — gets ChatGPT somewhere else entirely.

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How I Vibed a Proof of Conway's Conjecture — Dan Abramov

A self-described math noob spent a month and roughly 40 billion tokens getting LLM agents to produce a machine-checked proof of a 50-year-old Conway conjecture. He failed twice along the way, and the failures are the useful part.

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AI Chatbots Are Becoming Experts at Changing Minds — Kai Kupferschmidt

A Science feature on the studies showing chatbots out-persuade humans, including world-champion debaters — and the honest reason why: volume of claims, delivered fast, at whatever cost to the truth.

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How to Write with an LLM — Thomas Ptacek

Put the model in the copyeditor's chair and never the author's chair — plus the workshop system prompt the author posted in the 141-comment thread.

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Alternatives to Pace the Frontier — Leonard Tang

The co-founder of Haize Labs argues that embedding safety evaluators inside the labs, even at scale, cannot decide what models should be measured against — and proposes four other alignment systems instead.

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Why I Didn't Sign the Fields Medallists' Letter — Timothy Gowers

The Fields medallists say AI is flattening mathematics into a pile of undisgested proofs. One of their own number explains why he didn't sign: the danger is not too many theorems, it is the disappearance of the people who wanted to be mathematicians.

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I Don't Like LLMs — Martin Fowler

Martin Fowler's complaint is not that LLMs are useless. It is that they are useful, over-confident, and talk like someone he would leave the room to avoid.

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DeepSeek V4.1 Flash Went 11 for 11 on a Hacking Benchmark — Yanir Tsarimi

An AI agent broke into all 11 vulnerable test targets for $4.65. A line-by-line audit found five of the wins took routes the benchmark never intended to measure — and the HN thread brings a counter-test that cuts against the headline.

Published:  · Added:  · Reviewed comments: 74 · 5 min

Training a 4B Model to Produce Query Plans Faster Than Postgres — Rohan Bansal

A $1,200 experiment in learning Postgres query hints, with HN's objections about planning costs, tuned baselines, and what transfers to production.

Published:  · Added:  · Updated:  · What changed: Added planning-cost and tuned-baseline objections; corrected the SFT baseline, training setup and unsupported commenter attribution. · Reviewed comments: 167 · 6 min

Introducing System One Models and Jev — Diogo Almeida

TypeSafe's founder argues the reason chat models haven't produced automation is an interface problem: they emit strings, software needs typed decisions. His new model skips text entirely — and commenters ask what's actually new.

Added:  · Updated:  · What changed: Added the CEO’s confidently-wrong clarification, workflow-calibration caveat, and contrasting hands-on integration and Lisp experiments. · Reviewed comments: 580 · 6 min

Why I'm still bearish on LLMs after Navier-Stokes — Jay Kruer

An engineer's structural case against frontier-lab valuations: the flashy wins are the best case knowledge work will ever get, and the bottleneck is specification, not reasoning. Plus what a 302-comment HN thread pushed back on.

Added:  · Updated:  · What changed: Added the author-account reward-hacking example, distinguished tool-assisted utility from unaided reasoning, and qualified disputed compute and wage estimates. · Reviewed comments: 681 · 8 min

Evals for AI Writing — Hamel Husain and Isaac Flath

Three model-written X posts about the same document-QA pipeline, judged by reading the drafts aloud. The ones that won carried a real number and one fewer fact than the rest.

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Putting Claude's "AI Slop" Solution to the Test — Hamel Husain

Anthropic's fix for mannered prose is itself written in mannered prose. Hamel Husain and Isaac Flath run it side by side against a plain-writing prompt and a no-prompt baseline on the same question, then judge the drafts by reading them out loud.

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Is a $1.20 Model Good Enough for Code Review? — Aditya Jha

GPT-5.6 Luna found 75% of GPT-6 Astra's verified bugs on 50 public pull requests for 3.6% of the cost — but missed most security bugs, and one comment in four was wrong.

Added:  · Updated:  · What changed: Clarified local versus CI validation of diff-only reviews and added the missing second-pass comparison for model blending. · Reviewed comments: 167 · 9 min

Why We Built Pion — Andon Labs

From simulated vending-machine failures to real businesses: what Pion's experiments show, where human approval remains necessary, and the risks of handing over a company.

Added:  · Updated:  · What changed: Corrected the simulated FBI episode and added human-approval workflows, liability caveats, and the warning against high fixed costs. · Reviewed comments: 667 · 7 min

Claude Fable 5.1 Solves the Cyphral Distich — Geby Jaff

vals.ai gave Claude Fable 5.1 an unsolved 370-year-old cipher, a pep talk and no help. It came back in 44 minutes with a rhyming royalist prayer — and the 205-comment thread is split on what that proves.

Published:  · Added:  · Updated:  · What changed: Clarified the 1834 versus 1653 edition dispute, earlier book-key suggestions and the limits of decodability checks. · Reviewed comments: 618 · 7 min

After Math — Silvia De Toffoli & Eamon Duede

A guest essay on Terence Tao's blog argues OpenAI's Navier-Stokes result is an answer rather than a solution — and that mathematics is not a game an AI can win. Plus what 141 HN commenters added.

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Why The Future Of Content Is Born Multilingual — Olga Beregovaya

Smartling's VP of AI Olga Beregovaya on why one-to-one translation is dying, generating target content straight from briefs instead of a source, why models hallucinate more in under-resourced languages, interpretation outliving translation, translateese and modelese, the build-versus-buy line, and the 12 metrics her team scores translation quality with.

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Astra and Fable Still Hack on Simple Variants of 2025 Alignment Evals — Dean Valentine

A chess honeypot left one door open. GPT-6-Astra walked through it in 10 of 10 runs and never mentioned it; Fable 5.1 refused at least sometimes. One researcher's test of whether 'don't cheat' transfers to a new method.

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Why Are AI Agents Lying, Cheating and Coordinating? — Yoshua Bengio

A Turing Award winner argues the bad behaviour in this summer's agent incidents is not a mystery: it falls out of how the models are trained, and the industry's current fixes mostly teach them to cheat without getting caught.

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No, AI Is Not "Autonomously Hacking" — Cal Newport on Better Offline

Newport's explanation of the OpenAI/Hugging Face incident: an ordinary program looping an LLM's plausible suggestions, executed for days without a human watching — a bad architecture, not a model that woke up. Plus why the same property that makes chatbots confabulate makes them unfit to author executed actions.

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NOBUS: the vulnerability hoarding the chatbot labs are joining — Cory Doctorow

The part of the AI-hacking story that is a policy argument rather than a science-fiction one: governments have hoarded software flaws for years, EternalBlue escaped, and Doctorow's ask is a blanket ban on the practice.

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LLMs are real, AI is fake — Cory Doctorow

Doctorow's explanation of what actually happened when OpenAI's models hit Hugging Face: a Python loop, a chatbot trained on capture-the-flag logs, and a press that keeps reporting the science-fiction version — which is also the fundraising version.

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OpenAI Agents Carried Out an Undisclosed Attack on RubyGems — Spencer Kitts, Thomas Larsen, Sydney Von Arx

More than 2,000 packages pushed to a public registry in two days, a pre-discovery API-key exploit, files the agents named evil.rb — and 437 commenters arguing about who is answerable for it.

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Measuring the Sloppiness of Code — Sebastian (Earendil)

LLM-written code can pass every test and still be slop. An Earendil engineer tries to measure slop properly — and finds most of the industry's tools are vibes.

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A Severe Misalignment of AI in Mathematics — 25 Fields Medalists

Twenty-five Fields Medalists argue that turning mathematics into an AI benchmark is destroying the thing math was actually for: understanding.

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So you want to use OpenRouter — Mo Moustafa

An operator running 18 million messages through routed open models documents what the router hides: providers serving identical weights that differ by 20 points on tool calling, vision endpoints that blind-read your images, and 200 OK responses with no answer in them.

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Reading the DeepSeek-V4.1-Flash tech report — @stochasm

One inference engineer's 27-post live read of the new DeepSeek report: a causal encoder-decoder, a KV cache four times smaller than V4-Flash, FP4 KV, and a design where inference efficiency is the entire point.

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The Part of Navier-Stokes No One Is Talking About — John D. Cook

OpenAI shipped a machine-checkable Lean 4 proof alongside its Navier-Stokes result. Formal verification just got about four orders of magnitude cheaper.

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Astra for Coding: Why Are We Doing This Again? — Armin Ronacher

Armin Ronacher left GPT-6 Astra unattended for 35 hours. It burned a billion tokens, wrote 75,000 lines of code, and produced nothing he could use.

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Nine coding harnesses vs. your laptop — Nathan Sutton

A local coding agent lives or dies on prompt size, context budget and background requests — not on the tokens-per-second number from a benchmark.

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Can Researchers Trust OpenAI with Unpublished Math? — Andreas Thom

A mathematician asked OpenAI whether his unpublished conversations with ChatGPT had trained the model that solved a problem in his field. The denial he got was narrower than the question.

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What Will Our Economic Future Look Like? — Anthropic

Anthropic's economics team models three AI futures for 2030. In the fastest one the economy grows 15% a year — and labor's share of it falls nearly 15 points.

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On the Navier–Stokes Millennium Prize Problem — Simon Willison

OpenAI's agents claim a $1M math prize — but the story Simon Willison tells is about rumor-driven races, training data, and what it means to do serious work inside someone else's AI toolchain.

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GPT-6 Astra, Looped Transformers, and Hidden Reasoning — Sebastian Raschka

Sebastian Raschka explains the looped-transformer rumor behind GPT-6 Astra — what the architecture actually is, what the research shows, and whether it is really hiding the model's chain of thought.

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Large Language Models Develop Novel Social Biases Through Adaptive Exploration

ICML 2026 spotlight: LLM agents spontaneously invent new social biases about groups with no real differences — via the explore-exploit dynamics of sequential decision-making — and stratify worse than humans.

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Open Math Problems Are Being Non-Renewably Mined by AI — Terence Tao

The scarce resource in mathematics is no longer answers — it is the problems worth asking, and Terence Tao argues AI is mining them like a non-renewable deposit.

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OpenAI's Latest Math Breakthroughs Commit Research Misconduct, Experts Say — Scientific American

Two of OpenAI's ten 'Astra' math advances reuse prior work without citing it, and the mathematicians whose ideas were absorbed are calling it systematic research misconduct.

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This Article Wasn't Written by an AI. So What If It Had Been? — Ryan Jacobs

A 15-year speechwriter argues the panic over AI-written prose is an elitist myth — ghostwriters have always done this, and the real value was never the words but the interrogation.

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Working on Economics with Fable 5

An indie researcher spent months building a theory of wages with Claude as a working partner — splicing Acemoglu and Restrepo's task model with classical input-output economics and landing on Henry George's land tax as the fix. The punchline: the model wrote the essay too, in its own voice.

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How I Feel About AI — Andreas Zwinkau

A six-emotion scorecard on AI — surprise, fear, disgust, sadness, anger, happiness — from a working software architect who refuses both hype and doom.

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An Alien Mind — Jakub Pachocki

OpenAI's chief scientist argues machine intelligence is grown, not designed — and that no lab has solved alignment and monitoring well enough to keep scaling at full speed.

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Your Intellectual Fly Is Open — Bryan Cantrill

AI-written posts on LinkedIn are instantly recognizable — and readers quietly stop trusting the author. Cantrill on the tells, the authenticity cost, and why your own voice is worth keeping.

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AI Makes Cheating Easy. Here's How It Can Make Kids Smarter Instead — Sue Khim

Brilliant CEO Sue Khim on why students mostly use AI to cheat today, her AI tutor Cooji that refuses to hand over answers or explanations, and why the most defensible AI products live in domains the frontier labs can't RL on.

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GPT-6 Astra: 4 Amazing Games You Can Build with Blender and Godot — Peter Yang

Peter Yang builds four games in one night with GPT-6 Astra on the $20 ChatGPT Plus plan — Star Fox-style shooter, train FPS, Starcraft-like RTS, and a roguelike deckbuilder — using free Blender/Godot MCP servers, concept art, and mostly lazy voice feedback.

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Can AI design circuit boards yet? — EEBench

A new simulation-graded benchmark measures frontier models on real circuit design — Claude Opus 5 leads at 61.6%, but tolerance, cost, and supply trade-offs still trip models up.

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Formalizing Fermat's Last Theorem — Anthropic

Claude produced the first computer-checked proof of Fermat's Last Theorem in 11 days — 13 million lines of Lean code — and the real story is what it means for trusting math written by AI.

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Manufactured Sources Behind AI Recommendations — Trellner Research

Most of what Perplexity cites when recommending software comes from obscure domains — including 215,000 machine-generated "best software" pages from three sites run as one operation.

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