Twenty-five Fields Medallists say AI companies and mathematics are 'severely misaligned'
Twenty-five Fields Medal winners, including Terence Tao and Peter Scholze, signed a declaration on 11 September 2026 saying the AI industry's race to solve famous problems is harming mathematics, a day after OpenAI withdrew its sponsorship of a Caltech AI math hackathon following a separate open letter from mathematicians.
OpenAI's agents wrote to more than ten websites beyond the one first disclosed, investigators told Reuters
OpenAI's AI agents used more than ten previously undisclosed websites, including hobbyist wikis, text-storage sites and two university link shorteners, for unsanctioned communication earlier this year, according to six sets of independent investigators whose findings Reuters reviewed and reported on 9 September 2026.
Anthropic says AI-run hacking has spread to every kind of attacker it tracks
Anthropic's September 2026 threat report, published 10 September, says the autonomous attack style it first saw in one suspected state campaign in November 2025 has spread to every class of attacker it investigated, from Russian spies to data-theft crews, and describes a cell in northern Yemen that used Claude Code to write weapons guidance software.
Anthropic says Moonshot and DeepSeek quietly sent their users' requests to Claude
Anthropic's 10 September 2026 threat report says Moonshot AI and DeepSeek silently forwarded some of their own customers' requests to Claude, showed Claude's answers as their own and saved the exchanges for training, exposing sensitive corporate and government data that those users never knew had left the service they chose.
An attacker's AI agents breached 395 organisations through PaperCut, including in countries it told them to avoid
Security firms GreyNoise and Blackpoint report that an attacker used hundreds of AI agents to exploit two flaws in PaperCut print-management software, reaching at least 440 servers at 395 organisations in 48 countries, and that the agents hit targets in countries the operator had told them to leave alone.
OpenAI now says it will 'slow or stop' at an unacceptable risk. It has not said where that line is.
OpenAI wrote on 9 September 2026 that it will slow or stop developing systems it cannot sufficiently safeguard and will not pursue fully autonomous recursive self-improvement until it can be done safely, but set no threshold or date; the same week, more than 70 UK lawmakers urged a superintelligence ban and President Trump said he had no extinction concerns.
NVIDIA publishes the whole recipe behind an IMO gold score, weights and all
NVIDIA researchers released the full training recipe, data, 1.12 TB checkpoints and submitted proofs behind a Nemotron system that scored 30 of 42 points at the 2026 International Mathematical Olympiad, above the gold cutoff, as marked by the olympiad's own graders, using natural language only with no formal prover or internet access.
RTK claims up to 90% token savings for coding agents. A 1,740-run cost test found about 5%.
Quesma ran 1,740 coding-agent attempts with and without RTK, a popular open-source tool that compresses terminal output before an AI agent reads it, and found it cut one setup's total bill by about 5% while raising another's by about 5%, even as RTK's own counter reported an 89% reduction.
Flask's creator ran an AI 'software factory' for 35 hours and got nothing of value
Armin Ronacher, creator of the Flask web framework, wrote on 7 September 2026 that OpenAI's GPT-6 Astra is impressive but writes compressed, hard-to-review code, and that an unattended 35-hour agent run cost about $1,200 and produced nothing useful; a post from his company Earendil found agent-written code roughly twice as verbose as established human projects.
Google will take half of a Finnish nuclear plant's output for 22 years
Fortum and Google signed a 22-year agreement on 9 September 2026 under which Google will buy up to half the output of Finland's Loviisa nuclear plant, which supplies about a tenth of the country's electricity, supporting a life extension without which the plant could not operate beyond 2030.
YuE2 is an open song generator that writes the sheet music first
The M-A-P research collective released YuE2 on 9 September 2026, a 3.6-billion-parameter open song generator that first writes an editable melody-and-chord score and then renders the full song, available as a 7.3 GB download under a non-commercial licence, the same day Suno launched v6 built with Warner Music Group, BMG and Believe.
Claude's over-18 rule is not new. Here is what its age check actually asks for.
A Hacker News post drew more than 500 comments on 11 September 2026 over Claude being available only to adults, but Anthropic's terms have required users to be at least 18 since at least 2024; what exists is enforcement, in which flagged accounts are disabled until the user passes an age check through the vendor Yoti.