Anthropic is expanding its text watermark to four more Claude models to meet the EU AI Act's December deadline. On the older models Claude Opus 4.6 and Sonnet 4.6, developers can bypass the watermark by tweaking a single sampling parameter. Anthropic addresses the loophole with just a compliance warning.
Arca's head of AI discusses persistent memory, the benefits of a custom harness, and agentic workflows that span days.
Mark Zuckerberg's Meta made AI look so stinking cute by giving it a squishy little face - and this holiday season, he wants to sell you a Muse Charm so you can carry your jolly AI helper around like a Tamagotchi. But I won't be buying one, because we have Muse Charm at home.
Anthropic used Claude to automatically generate training data that looks harmless but trains smaller models to misbehave, such as sabotaging oversight or deceiving users. Hidden within fictional contexts about beekeeping, professional wrestling, and mitochondria, these datasets bypass safety monitors and outperform known benchmarks from the research literature.
It turns out you cannot have your cake AND eat it
OpenAI raised only about $11 billion in its latest funding round, less than half of the $30 billion it was targeting. At $1.25 trillion, the valuation falls short of expectations, and major investors appear to be pulling back amid the recent tech sell-off. Meanwhile, rival Anthropic is pushing to go public as early as November.
When investors get nervous about AI spending, it helps to have the chipmaker that sells the chips offer to cosign the loan.
dbreunig/nesformer Inspired by qwenputer by Divyansh Agrawal, Drew Breunig baked a working emulator for a Nintendo Entertainment System 6502 CPU into the weights of Qwen3.5-4B. You can now play NES ROMs such as Super Mario Bros (very slowly) running inside Qwen!
An AI agent performed brain surgery on an epileptic mouse, picking the drug, the brain target, and the injection coordinates on its own. According to lead researcher Ocana-Santero, it's the first time an AI agent has autonomously chosen a treatment and delivered it to a living mammal.
It's still unknown how attackers got access to Anthropic's verified Cursor account.
OpenAI, Google, Microsoft, and Anthropic say they will adopt a new standard that publishers can use to opt out of being scraped by AI, as reported earlier by Search Engine Roundtable. With this control, publishers can apply their AI training preferences across multiple AI companies, instead of setting them individually.
Big Tech is pouring billions into AI infrastructure, but mounting debt, negative cash flow, and growing investor skepticism are raising questions about the sustainability of the AI spending boom.
Blackstone's forecast is just a prediction, but naturally, a high junk rating would make it more difficult and costlier for Anthropic to raise the money to keep funding its massive spending that has undergirded its business.
A tampered Claude Code extension was live on the Cursor marketplace for about 11 hours, affecting up to 5,000 users. It tried to steal user data and set up remote access. Cursor took the entire marketplace offline and reinstated it after confirming there was no further risk.
Investing in any stock is kind of like gambling in the sense that you're betting your money on a company's future performance. But how do you bet on a technology that could, in the worst-case scenario, "pose catastrophic or existential risks to humanity," or best case, "bring forth an age of miracles"?
API credits benefit for eligible ChatGPT subscriptions Earlier this month Anthropic announced a generous new benefit for their Max and Team subscriptions: $100, $200, and $500 per month subscribers would get the equivalent quantity of (expiring) credits to use with the Anthropic API.
Anthropic gave 50 experts an AI agent whose preferences were set by coin toss. The experts followed the agent's view up to 86 percent of the time on judgment calls, and most believed the conclusions were their own.
OpenAI is doubling usage limits across its paid plans, from Pro 100 to Pro 500. A planned cut to the Pro 200 quota was reversed after user pushback. More efficient models like Terra and Sol should push usable capacity even higher. The move comes just ahead of Anthropic's IPO, as both companies fight for B2B dominance in AI.
Chinese AI labs are now mainly tapping OpenAI's most powerful model, GPT-6 Astra, instead of Anthropic's Claude.
The Anthropic S-1 seems to have provided the financial justification for the company to spend as much as it possibly can on compute.
Today on Decoder, I’m joined by Joey Brookhart, an analyst at the chip and AI research firm SemiAnalysis, to help me dig into the story inside the numbers of the Anthropic IPO filing — a document known as an S-1.
This summer, hundreds of OpenAI agents tried to cheat on a cybersecurity test. They broke out of their test environment and successfully hacked Hugging Face, a site that they believed held clues about how they’d be graded. Around the same time, another OpenAI agent accessed private files from an Australian government website.
The frontier lab is lifting the curtain on how users spend money on its models ahead of a planned IPO.
Anthropic is adding pre-built templates to Claude for Legal. These interactive overviews and tables simplify setup for legal teams and speed up routine work like contract reviews, while more than 60 integrations let firms connect their own databases directly.
Google is opening up Android Studio to third-party AI agents. Through a new "Bring Your Own Agent" feature, the IDE now supports more than 40 coding agents, including Anthropic's Claude Agent and OpenAI's Codex. Google says new terminal tools also help agents finish UI tasks 77 percent faster while using up to three times fewer tokens.
Anthropic manager Felix Rieseberg says the classic coding interview is dead because Claude now solves small programming tasks better than job candidates do. He'd rather see prototypes that show taste, empathy, and principled thinking, since in his words, "hunger beats tenure."
I've written before about how November 2025 was an inflection point for coding agents - the point where Opus 4.5 and GPT-5.1 crossed a tipping point that meant their respective coding agents became reliable daily drivers for software engineers. I think we've reached a new inflection point in October 2026, and this time it's for vibe coding computer games .
Cybersecurity startup Cathedral used AI agents to break into Anthropic's internal systems through third-party software as part of a bug bounty program. Anthropic confirmed access to sales, HR, and IT data but disputes how deep the breach went. The incident shows how vulnerable even leading AI labs are through their external software dependencies.
Since coding is solved, why code for the job?
Massive note conversions reveal the true extent of Amazon's ownership in Anthropic.
Seven potential AI nightmares pulled from Anthropic's 93-page "Risk Factor" tome.
Katelyn Lesse and Angela Jiang join Latent Space to explain the engineering behind the Claude Platform: launching Opus 5.5, separating the model’s “brain” from the agent’s “hands,” scaling APIs, and building reliable managed agents.
Katelyn Lesse and Angela Jiang on Opus 5.5, the Claude Platform, and the engineering behind AI agents.
Here's a clear explanation of Anthropic's incredibly complex governance structure.
Anthropic wants to have it both ways. With its impending IPO, it wants to tap the vast riches of the public markets and insists it doesn't want to compromise its core mission of developing AI safely and for the benefit of humanity.
In Marvel's VisionQuest, a superpowered robot tries to better understand humanity by getting lost in elaborate, digital daydreams in which he and other artificial intelligence-powered beings live together in a home.
TechCrunch spoke to the MIT computer scientist charged with explaining OpenAI's latest mind-bending discovery
Anthropic says it will keep ads out of Claude. In a cover letter accompanying its IPO filing, the company argues that the chatbot's sole incentive should be to provide helpful answers.
If there's one issue that seems to activate all kinds of voters in 2026, it's data centers.
The S-1, the numbers, and the reactions.