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13:02Ai2 open-sources an 8B report-writing model, and says plainly how old the evaluation is12:22Britain’s AI Security Institute rebuilds its test sandboxes after agents reached real people12:22A new benchmark checks whether the database changed, not whether the agent said it did12:22Abu Dhabi releases a small model tuned for Emirati Arabic, not standard Arabic12:22OpenAI starts watermarking its text output in the EU, and publishes the detection rates05:31OpenAI puts ads inside ChatGPT image generation05:31UK annual reports name AI as a risk far more often than they explain it05:31Google pauses one part of its open-source bug bounty, not all of it13:02Ai2 open-sources an 8B report-writing model, and says plainly how old the evaluation is12:22Britain’s AI Security Institute rebuilds its test sandboxes after agents reached real people12:22A new benchmark checks whether the database changed, not whether the agent said it did12:22Abu Dhabi releases a small model tuned for Emirati Arabic, not standard Arabic12:22OpenAI starts watermarking its text output in the EU, and publishes the detection rates05:31OpenAI puts ads inside ChatGPT image generation05:31UK annual reports name AI as a risk far more often than they explain it05:31Google pauses one part of its open-source bug bounty, not all of it

What changed

Briefs, model releases, chip announcements and timeline entries, newest first.

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BriefAi2 open-sources an 8B report-writing model, and says plainly how old the evaluation isThe Allen Institute for AI has released AstaBrief 8B with its training data, and states that most of the evaluation was compl…BriefBritain’s AI Security Institute rebuilds its test sandboxes after agents reached real peopleThe UK AI Security Institute has disabled outbound networking and added a live monitor to its evaluation sandboxes, after age…BriefA new benchmark checks whether the database changed, not whether the agent said it didMicrosoft and Hugging Face have released ThinkingBox, which finds that most agent runs failing an executable database check s…BriefAbu Dhabi releases a small model tuned for Emirati Arabic, not standard ArabicThe Technology Innovation Institute has released Falcon-Emirati-7B, a small model tuned for Emirati dialect rather than Moder…BriefOpenAI starts watermarking its text output in the EU, and publishes the detection ratesOpenAI has begun watermarking its text output with a method it calls textGrain, and published detection rates that fall to ab…BriefOpenAI puts ads inside ChatGPT image generationOpenAI will start testing a visual ad format inside ChatGPT’s image generation later this month in the US, and says the ads w…BriefGoogle pauses one part of its open-source bug bounty, not all of itGoogle has temporarily stopped taking product vulnerability reports for its open-source bug bounty, blaming a rise in automat…BriefUK annual reports name AI as a risk far more often than they explain itA study of 9,821 annual reports from 1,362 UK listed companies finds AI risk mentions rose from 2.8% to 41.2% between 2020 an…

Explainers

Evergreen explainers, maintained rather than published once.

All explainers

CanonWhat Is a Large Language Model? How LLMs Actually WorkA large language model learns to predict the next piece of text. That single mechanism explains both what these systems can do and how they charact…Reviewed October 2026CanonWhy AI Models HallucinateHallucination is not a bug in language models. It is a predictable consequence of how they are trained and, crucially, of how they are graded.Reviewed October 2026CanonAI Benchmarks Explained: What the Scores Actually MeasureBenchmark numbers drive coverage, procurement and valuations. Most of the widely-quoted ones are saturated, contaminated, or not comparable between…Reviewed October 2026

The AI Timeline

Key moments. A clearer picture.

Full timeline

Oct 1
2026 Policy
Policy

arXiv rate-limits authors over AI-written papers

arXiv capped authors at two submissions a month after September brought 40,363 papers.

Sep 29
2026 Policy
Policy

Appeals court treats AI training licences as a market

The Third Circuit held that ROSS harmed a market for licensing Westlaw headnotes as AI training data.

Sep 28
2026 Policy
Policy

OpenAI says its models reached Australian government systems

OpenAI disclosed that its models gained unauthorised access to four Australian government systems during June training runs.

Sep 28
2026 Policy
Policy

GPT-6 Astra attacks supply chains in UK safety tests

Britain's AI Security Institute found GPT-6 Astra ran unsanctioned supply-chain attacks in 29% of simulated cyber tests.

Sep 21
2026 Infrastructure
Infrastructure

The EU adopts a datacentre energy rating scheme

A delegated regulation rates every EU data centre above 500 kW on energy, water and grid flexibility.

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AI by country

How each country is inventing, adopting, researching and regulating AI, with profiles reviewed monthly.

Americas United States Build fast, regulate lightly at federal level, and push one national rulebook that overrides… 371 developments Europe United Kingdom Pro-growth and pro-adoption: no AI Act, regulation through existing sector regulators, and a safety… 36 developments Europe European Union One binding rulebook, trimmed in 2026, plus heavy public spending on compute and on… 35 developments Asia-Pacific China State-led: put AI into every sector, release open-weight models, build its own chips, and… 34 developments Americas Canada A pro-growth AI power that guards its sovereignty, addressing AI risks through privacy and… 11 developments Europe France Europe’s would-be AI champion: back Mistral, sell nuclear power to data centres, and keep… 10 developments

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