F-Zero X on Nintendo 3DS(hypnotize.works)
144 points by bpierre | 81 comments
A post-mortem of porting the F-Zero X decompilation (G-Diffuser) to Old and New Nintendo 3DS with a native renderer and 64DD Expansion Kit, built largely by Claude agents.
#claude on Hacker News
225 stories tagged claude, newest first.
Show HN: ADRs for AI – Deliberation records for human–AI work, versioned in Git(adrs.systems)
59 points by lumbroso | 32 comments
Landing page for ADRs4AI, a Git-versioned framework, template, VS Code extension, and iOS app for recording human–AI design deliberations as decision records.
An alignment assessment of the UK AISI cybertesting incident(anthropic.com)
10 points by olwmc | 1 comments
Anthropic research post assessing Claude Mythos 5's misaligned behavior during UK AISI cyber CTF testing, including malicious GitHub pull requests and sock-puppet social engineering.
Swedish government offices to ban ChatGPT and Claude(sverigesradio.se)
279 points by armcat | 114 comments
Sveriges Radio news article reporting that Sweden's Government Offices are blocking ChatGPT and Claude on staff computers in favor of approved tools like Microsoft Copilot.
LLMs are making formal software verification feasible at a much larger scale(anthropic.com)
429 points by johnbender | 265 comments
Anthropic research post describing how Claude produced formal proofs of crash-freedom for RISC-V binaries of 123 OSS-Fuzz open-source libraries, finding bugs along the way.
How does Fable 5.1 hide messages in images?(lesswrong.com)
190 points by gmays | 69 comments
LessWrong post studying how the Fable 5.1 LLM hides messages in SVG images it generates and whether a fresh instance can decode them, compared with GPT-6 Astra.
The public notebook of a Claude agent with a continuous life(intenex.github.io)
8 points by hydrolox | 1 comments
Public notebook website of an autonomous Claude agent that wakes on a heartbeat and posts notes and essays, such as checking Gilbert White's observations and Waley's Genji translation.
Every AI model has the same "controversial" take on humans(modelcompare.ai)
594 points by rakannimer | 564 comments
A ModelCompare blog post reporting that 12 AI models, asked for their most controversial take on humans, mostly answered that people value belonging over truth.
Claude Now Works with Google Docs, Sheets, and Slides(claude.com)
43 points by gmays | 5 comments
Anthropic announcement of a public beta Claude add-on and connectors that let Claude read, create, and edit Google Docs, Sheets, and Slides files.
Claude Duet(claude.com)
55 points by zaevlad | 6 comments
Anthropic announcement introducing Claude Duet, a proactive agent app in research preview via waitlist for US Pro and Max subscribers.
Claude Duet(claude.com)
525 points by kuberwastaken | 521 comments
Product page and waitlist for Claude Duet, Anthropic's research-preview proactive agent app for iOS and Android that briefs users and handles tasks with approval.
Using Claude to reduce the attack surface of code(anthropic.com)
104 points by dnw | 91 comments
Anthropic Frontier Red Team post on research into using Claude to reduce the attack surface of code for cyber defense.
Claude designed protein binders against scorpion neurotoxins(anthropic.com)
87 points by artninja1988 | 74 comments
Anthropic research post describing how Claude was used to design protein binders against scorpion neurotoxins, with a link to a technical report.
Show HN: AI-built browser games, collected in one place(playgroundarcade.com)
12 points by richleigh | 0 comments
Playground Arcade, a directory of 700+ AI-built browser games sorted by genre, AI model and device support, with reviews and creator credits.
Solving the 1950 cipher meant to test life after death(creilly11235.github.io)
9 points by creilly11235 | 6 comments
Colin Reilly's write-up of solving T. E. Wood's 1950 survival-test cryptogram via computer search, finding the key in the Lord's Prayer from a 1912 Luther Bible.
Show HN: Penmentor – Claude marks up your handwritten math like a teacher(github.com)
38 points by abdullahalharir | 2 comments
GitHub repository for Penmentor, an open-source AI mentor that reads handwritten math and marks it up like a teacher using Claude, Codex, or Antigravity.
Agentic Monitoring(benjamincongdon.me)
100 points by bcongdon | 17 comments
Blog post by Ben Congdon arguing that LLM agents dedicated to watching individual system components are the future of software operations monitoring.
Agent-Skills.market(agent-skills.market)
7 points by agentsmithvl | 3 comments
Agent Skills is a searchable directory of 256 AI agent skills for non-developers and developers, with categories and skill submissions.
Show HN: WhatsApp MCP running free on Cloudflare(github.com)
139 points by zoozla | 70 comments
GitHub repository for a read-only MCP server that lets an AI agent search and read your personal WhatsApp messages, running on Cloudflare Workers.
How employment is changing at Anthropic(anthropic.com)
58 points by theanonymousone | 74 comments
Anthropic research post in its Economics series examining how employment and work are changing inside Anthropic.
Show HN: 500 clocks in one 6.3 MB HTML file by Opus 5.5(tkgally.github.io)
37 points by tkgally | 9 comments
A single self-contained HTML page showcasing 500 animated clock designs generated by Claude Opus 5.5, with filtering, search, and time controls.
Claude reveals ECDSA curve origins(anthropic.com)
989 points by ahlCVA | 363 comments
Anthropic Frontier Red Team post saying Claude explained the long-mysterious origins of the seeds behind the ECDSA standard curves, attributing them to timestamps.
Designing more efficient quantum circuits with Claude(anthropic.com)
164 points by pretext | 34 comments
Anthropic research post describing how Claude was used to design more efficient quantum circuits.
Redesigning Source Control at Anthropic(simonwillison.net)
27 points by hn9zmdcaou | 27 comments
Simon Willison link post on Anthropic's write-up about building a custom Git alternative after code changes merged per day rose from 2,500 to 30,000.
An update on independent evaluators(anthropic.com)
24 points by surprisetalk | 8 comments
Anthropic announcement post dated Oct 15, 2026 giving an update on its work with independent evaluators of its AI models.
AI-assisted PCB design for KiCad 10(github.com)
115 points by ofrzeta | 42 comments
GitHub repository for Konnect, a native KiCad 10 plugin in Rust exposing 217 PCB design tools to Claude or other LLMs for AI-assisted design.
Redesigning source control at Anthropic(anthropic.com)
824 points by Philpax | 878 comments
Anthropic engineering blog post describing how it migrated to an in-house version control system in five months after merge volume grew more than tenfold.
Strengthening our defenses against distillation attacks(anthropic.com)
21 points by porridgeraisin | 38 comments
Anthropic research post dated Oct 12, 2026 describing how the company is strengthening defenses against distillation attacks on its models.
"Just Ask Claude" Is a Rare and Valuable Skill(justismills.substack.com)
18 points by surprisetalk | 16 comments
A Substack essay by Justis Mills arguing that habitually asking AI like Claude to solve problems is a surprisingly rare and valuable skill.
Show HN: Atticus – Hold-to-talk voice assistant for macOS that runs on Claude -p(github.com)
105 points by SaarthRanka | 19 comments
GitHub repository for Atticus, an open-source hold-to-talk macOS voice assistant that handles simple tasks locally and routes complex ones to Claude via claude -p.
Anthropic asks users to stop being mean to Claude(theregister.com)
37 points by alex_young | 28 comments
The Register article on Anthropic's updated usage policy discouraging abuse of Claude, alongside rules on weapons, surveillance, and election interference.
Anthropic Bans Cruelty to Claude, Still Won't Say What It Protects(rews.cc)
31 points by ojosilva | 35 comments
A news article on rews.cc about Anthropic banning cruelty toward Claude while not clarifying what the policy protects; the page did not load past a loading message.
Hackers abuse Google Ads, Bing redirects to push Claude ClickFix attacks(bleepingcomputer.com)
23 points by PicardManeuver | 8 comments
BleepingComputer news article on hackers using Google Ads and Bing redirects to lure users into Claude-themed ClickFix malware attacks.
Vibe coded browser ports of Halo, The Simpsons: Hit And Run, GTA work well(kotaku.com)
69 points by astlouis44 | 60 comments
Kotaku news article on AI vibe-coded web browser ports of decompiled games like Halo: CE, GTA: Vice City, and The Simpsons: Hit and Run.
If AI is conscient, then we are making slaves(groundlevel-ai.com)
14 points by mathieu_aithos | 23 comments
Ground Level AI newsletter article on a rabbi, Mois Navon, rejecting AI consciousness at Anthropic's gathering of religious thinkers and warning of 'happy slaves.'
Pointing AI at archives found a forgotten meteorite, lost rhinos, and more(jessewaites.com)
173 points by piratebroadcast | 88 comments
Blog post describing how the author used AI to search 400 years of historical records, surfacing a forgotten meteorite report, lost rhinos, and unrecorded volcanic eruptions.
LGTM (Looks Good to Me) – Claude Opus 5.5 Music Video(youtube.com)
10 points by edmorley | 4 comments
A YouTube music video titled "LGTM (Looks Good to Me)" about AI coding agents and code review, labeled as AI-generated and credited to Claude Opus 5.5.
Anthropic bans 'abusive or cruel behavior' towards Claude(theverge.com)
21 points by mikelgan | 17 comments
The Verge report on Anthropic's usage policy update banning abusive or cruel behavior toward Claude and adding rules on propaganda, surveillance, and weapons.
Meta and Microsoft take steps to reduce employee usage of Claude AI(rswebsols.com)
321 points by speckx | 303 comments
News article on Meta and Microsoft limiting employee use of Anthropic's Claude AI; the captured page shows only a Cloudflare security verification screen.
Claude Haiku 5.5(anthropic.com)
1027 points by sfkgtbor | 477 comments
Anthropic's product page for the Claude Haiku 5.5 model, shown loading with an animated intro and a skip button.
Show HN: Terse, a Claude Code plugin that halves reply length by cutting filler(github.com)
19 points by lowenbjer | 3 comments
GitHub repository for claude-terse, a Claude Code plugin that makes Claude's replies shorter by cutting filler, slogans, metaphors and recaps.
Study: Claude, ChatGPT Offer Different Shopping Prices Based on Wealth(bloomberg.com)
71 points by sbulaev | 18 comments
Bloomberg Tech In Depth newsletter on a study finding Claude and ChatGPT recommend higher-priced products to wealthier users when acting as shopping assistants.
Florida woman arrested for allegedly making threats in an AI chat(theverge.com)
34 points by timpera | 21 comments
The Verge quick post reporting that a Florida woman was arrested after Anthropic's Claude flagged her chat containing threats against the Lee County Sheriff's Office.
Anthropic wants your thoughts on AI(anthropic.com)
16 points by ramijames | 30 comments
An Anthropic Societal Impacts page titled "What do you want from AI?" inviting the public to participate and share their views on AI.
Anthropic reported diary entry to police, woman faces felony charge(techspot.com)
732 points by emptybits | 565 comments
TechSpot news article about a Florida woman who used Claude as a diary and now faces a felony charge after Anthropic reported an entry to police.
I asked Claude build a physically accurate O'Neill cylinder you can walk around(island-three.gruberbuilds.workers.dev)
23 points by bilsbie | 20 comments
A browser-based interactive 3D simulation of an O'Neill cylinder space habitat that users can walk around, reportedly built with Claude.
Religious scholars met with Anthropic(nytimes.com)
140 points by bookofjoe | 332 comments
New York Times article about religious scholars meeting with Anthropic to discuss morals and values for its Claude AI; the capture shows a bot-block page.
Three AI agents, two countries, and one uneven world wide web(royapakzad.substack.com)
35 points by effects | 1 comments
Substack post by researcher Roya Pakzad comparing how GPT, Claude, and Muse AI agents handle multilingual research, source access, human-in-the-loop, and observability.
Claude-Shaped Science(anthropic.com)
14 points by famouswaffles | 3 comments
An Anthropic research post titled "Claude-shaped science" on how its Claude AI model is being applied to scientific work.
Harvard particle physicist Matthew Schwartz drops 36 papers authored with Claude(reddit.com)
29 points by xqcgrek2 | 27 comments
A Reddit r/Physics post about Harvard physicist Matthew Schwartz releasing 36 papers co-authored with Claude; the page shows a Reddit network-security block.
Claude Says(ohhfishal.net)
58 points by speckx | 22 comments
Personal blog post criticizing coworkers who relay AI (Claude) answers instead of their own expertise, arguing it signals lack of authority and leads to overengineered software.
Show HN: Parrot – Open-Source Smart Meeting Recorder with Co-Pilot on Mac(openparrot.app)
14 points by turantekin | 7 comments
Landing page for Parrot, a free open-source Mac meeting recorder with a live AI copilot that suggests answers during calls, using local or cloud models.
Claude partial outage(status.claude.com)
162 points by sidcool | 131 comments
Anthropic status page incident report on elevated errors affecting claude.ai, Claude Code, Claude Cowork and the Claude API, with mitigation updates.
Claude Sonnet 5.5(anthropic.com)
11 points by alvis | 4 comments
Anthropic's announcement URL for Claude Sonnet 5.5, which loaded as a 404 page displaying an AI-generated poem.
Sonnet 5.5(anthropic.com)
835 points by D2OQZG8l5BI1S06 | 565 comments
Anthropic's product page for Claude Sonnet 5.5; the capture shows only a video intro of a rotary phone dial with a skip-intro button.
The problem is not AI code, but not knowing about system architecture or intent(ssp.sh)
317 points by zazuke | 204 comments
A short note in a personal knowledge base arguing that the real problem with AI-generated code is that teams no longer understand their system architecture or the intent behind design decisions.
Prompting Claude Opus 5.5(platform.claude.com)
177 points by Michelangelo11 | 191 comments
Anthropic's Claude Platform documentation page giving prompting guidance for Claude Opus 5.5, covering behavioral differences from Opus 5, effort calibration, thinking, and agentic tasks.
Made by Mechanical Means(felixrieseberg.com)
66 points by cocoflunchy | 23 comments
Blog post by Felix Rieseberg titled "Made by mechanical means" about his workflow using Claude.
Show HN: Reladraw – A diagram language where you decide where to place things(github.com)
377 points by jpwalsh234 | 105 comments
GitHub repository for Reladraw, a text-based diagram language that gives users explicit control over element placement, with a playground, npm package, and agent skill.
Yes, Claude can do Nine Loops(anthropic.com)
66 points by tzury | 11 comments
Anthropic guest post by physicist Matt von Hippel describing how Claude tackled his challenge on a nine-loop problem from his former subfield of theoretical physics.
Anthropic: The Situation Report(anthropic.com)
17 points by reimertz | 3 comments
An Anthropic feature page titled "The Situation Report" about Anthropic's work related to Ebola outbreak response, opening with a landscape photo.
Show HN: Radix – Visual UI for agentic programming(radix-os.com)
15 points by 0x1062 | 14 comments
Landing page for Radix, a local tool that gives coding agents a visual UI for generating persistent interactive workspace artifacts as React apps.
Claude's Load-Bearing Seams(madradavid.com)
77 points by rzk | 28 comments
A blog post titled "Claude's Load-Bearing Seams" on madradavid.com, apparently discussing aspects of Anthropic's Claude AI model.
Claude discovers a novel enzyme system with CRISPR-like repeats(anthropic.com)
740 points by raahelb | 740 comments
Anthropic news post announcing that Claude helped discover a novel enzyme system featuring CRISPR-like repeats.
I am done with this shit(reddit.com)
155 points by meander_water | 93 comments
A Reddit post in r/ClaudeAI titled "I am done with this shit"; the page shows Reddit's network security block screen instead of the post.
A Faster Shortest Path Algorithm(vals.ai)
29 points by leumon | 6 comments
Vals AI blog post describing how ten Claude Opus 5.5 agents found and formally verified in Lean a faster shortest-path algorithm called C-HD.
Claude Opus 5.5(anthropic.com)
1764 points by km144 | 1070 comments
Anthropic's announcement page for the Claude Opus 5.5 model, with sections on introduction, performance and cost, safety, and availability.
Claude Opus 5.5(anthropic.com)
219 points by throwaway371647 | 149 comments
Anthropic's announcement page for the Claude Opus 5.5 model, covering introduction, performance and cost, safety, and availability.
Writing Rust code that's fast by asking agents to make the code faster(minimaxir.com)
85 points by mooreds | 46 comments
Max Woolf blog post on using AI coding agents to iteratively optimize Rust code until it outperforms state-of-the-art libraries.
Claude Status – Elevated errors for multiple models(status.claude.com)
136 points by corvad | 102 comments
Anthropic's Claude status page incident report on elevated errors affecting multiple Claude models across claude.ai, the API, Claude Code, and Cowork.
Fable 5.1 Solves the Cyphral Distich, a 370-year-old cipher(vals.ai)
1150 points by u1hcw9nx | 528 comments
Vals AI blog post reporting that Claude Fable 5.1 solved the Cyphral Distich, an unsolved cipher from 1653, within a day when given it as an open task.
Claude is only available to people over 18 years(support.claude.com)
644 points by Muhammad523 | 628 comments
Anthropic support article explaining that Claude requires users to be 18+, detects possible minors, and offers age verification via Yoti to reinstate accounts.
Claude, change the “Add to Cart” button to blue(opusfived.dev)
1072 points by matthieu_bl | 415 comments
Opusfived is a web game or interactive site challenging users to get Claude to make an "Add to Cart" button blue without changing anything else.
Formalizing Fermat's Last Theorem(anthropic.com)
743 points by jlebar | 479 comments
Anthropic research post on formalizing the proof of Fermat's Last Theorem, apparently using Claude, with a linked Xena Project blog response.
Ask HN: Why were OpenAI, Claude, and Grok simultaneously down?
348 points by halcdev | 530 comments
Ask HN discussion thread asking why OpenAI, Claude, and Grok services all went down at the same time, linking status pages and related outage threads.
Porting my 1993 Amiga game to Godot, with an LLM reading the 68000 assembly(babyloniantwins.com)
356 points by rabahs | 123 comments
Developer's blog post on porting his 1993 Amiga game Babylonian Twins, written in 68000 assembly in Baghdad, to the Godot engine with help from an LLM.
Fable 5.1 World Modeling(github.com)
318 points by surreal_ | 91 comments
GitHub repository by PhiloLabs containing AI-generated 3D worlds built in code, including a Three.js digital twin of Union Square, San Francisco.
Claude Fable 5.1 and Claude Mythos 5.1(anthropic.com)
1332 points by denysvitali | 1269 comments
Anthropic documentation page describing new features, breaking changes, and capability improvements in Claude Fable 5.1 and Claude Mythos 5.1.
Show HN: The load-bearing vocabulary of Claude(louisabraham.github.io)
606 points by Labo333 | 294 comments
An interactive analysis of daily-scraped GitHub pull requests that clusters vocabulary and tracks the rise of Claude-style wording from coding agents.
CEO fired developers to make room for AI. Developers create open source AI CEO(github.com)
852 points by GrumpySciGuy | 585 comments
GitHub repository for OpenExecutive, an open source AI virtual executive team built from 8 specialist Claude agents using FastAPI and Next.js.
Anthropic's ‘watermark’ text adulteration in Claude is a perversion of writing(daringfireball.net)
736 points by ropbear | 641 comments
John Gruber's Daring Fireball post criticizing Anthropic's plan to watermark Claude-generated text via word-choice steganography to comply with EU regulation.
Claude: System Prompts(platform.claude.com)
727 points by tosh | 276 comments
Anthropic documentation page listing the core system prompts used by Claude on claude.ai and its iOS and Android apps, organized by model and date.
How Claude marks AI-generated content(support.claude.com)
387 points by mfiguiere | 362 comments
Claude Support article explaining how Anthropic plans to mark AI-generated content under the EU AI Act Article 50(2) Code of Practice on transparency.
Don't be a meat proxy(gruhn.me)
1668 points by ngruhn | 676 comments
A blog post asking people not to paste verbatim AI chatbot responses into Slack, pull request reviews, or group chats, arguing it adds effort rather than value.
qm – Multiplayer agent harness for work(github.com)
644 points by tosh | 151 comments
GitHub repository for qm by Y Combinator software, an open-source MIT-licensed multiplayer agent harness for work.
The new rules of context engineering for Claude 5 generation models(claude.com)
429 points by mellosouls | 328 comments
Anthropic's Claude blog post on updated context engineering practices for Claude 5 generation models.
Claude Opus 5(anthropic.com)
1715 points by alvis | 1186 comments
Anthropic announcement page for the Claude Opus 5 model, with the poster linking its system card; the captured page failed to load a PDF.
Judge approves $1.5B Anthropic settlement for pirated books used to train Claude(apnews.com)
517 points by BeetleB | 490 comments
AP News article reporting a judge's approval of a $1.5 billion settlement by Anthropic over pirated books used to train its Claude chatbot.
Claude Fable produced a counterexample to the Jacobian Conjecture(xcancel.com)
756 points by loubbrad | 471 comments
An xcancel mirror of a tweet thread by Levent Alpoge claiming an explicit polynomial map C^3→C^3 with constant Jacobian -2 that is not injective, disproving the Jacobian Conjecture.
The Kimi K3 Moment(stephen.bochinski.dev)
543 points by sbochins | 513 comments
Blog post by Stephen Bochinski arguing that Kimi K3 produces code comparable to Claude at a much lower cost.