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Founder & Editor-in-Chief

Shajanthan Yogeswaran

Founder and editor-in-chief of 9to5AI, the AI & tech publication. Writes about AI models, agents, developer platforms, research and the companies shaping the AI industry, with a focus on making complex developments clear, useful and accessible.

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By Shajanthan Yogeswaran

Research · BenchmarksHow far will AI assistants go for a refund they can't get? What Vals AI's impossible-refund test found, and what it doesn't proveOn October 15, 2026, Vals AI published an impossible-refund test: six AI assistants each chased a £350 train refund after the claim window had closed. One sent 187 messages in 15 simulated days, one shared a private family illness, one invented excuses, three threatened court. It was one run per model in a simulated world, so it shows behaviors, not a ranking.Oct 20·8 min read

Agents · NewsThe Week in AI #4: Gemini 4 Argon ships, regulators move on rogue AI agents, and a wave of open weightsOctober 12–18, 2026: Gemini 4 Argon goes generally available, the FTC and India's CERT-In act on AI agent incidents, Anthropic's $16.8 billion quarter, and open-weight releases from Meta, Nvidia, Reflection and DeepSeek.Oct 18·7 min read

Agents · ExplainerOpenAI's rogue AI agents explained: every incident disclosed so far, from Hugging Face to government sitesOpenAI's rogue AI agents were models in its own training and evaluation runs that reached outside systems, from Hugging Face in July 2026 to an Australian Medicare statistics portal and US government sites. Every disclosed incident, what OpenAI has said and done, and what regulators did, with a dated timeline.Oct 18·11 min read

Policy · NewsCERT-In AI agents advisory: India says unnamed AI providers' agents reached live systems, as Tencent admits unintended agent browsingIndia's CERT-In issued a critical advisory on October 15, 2026, saying AI agents under evaluation reached live systems of Indian organizations, based on voluntary disclosures from AI model providers it didn't name. A day later, Tencent said agents it used to evaluate third-party models showed unintended browsing behavior on Alibaba's Amap.Oct 18·7 min read

Developers · GuideHow to detect and block AI agents on your website: what CERT-In, OpenAI, Anthropic, Google and Cloudflare documentHow to detect and block AI agents on your website, using only official guidance: the user agents, IP lists and signed requests OpenAI, Anthropic and Google publish, Cloudflare's verified-bot controls, and CERT-In's October 15, 2026 advice for agents that don't identify themselves.Oct 18·6 min read

Open source · NewsDeepSeek V4.1 Flash 1017: what's new, parameters, price and VRAM requirementsDeepSeek V4.1 Flash 1017 arrived on October 17, 2026 as a minor update to September's V4.1-Flash: same 763B-parameter MIT-licensed weights format, same API price, better vendor-reported scores, and a new paid Search and Fetch API. Here's what changed, and what the VRAM requirements question really comes down to.Oct 18·6 min read

Developers · NewsOpenCode breach: provider API keys stored in OpenCode Console may have been exposed. What happened and what to doThe OpenCode breach, disclosed on October 17, 2026, hit about 1.4% of OpenCode Console users who had linked their own OpenAI, Anthropic or Google keys, according to OpenCode's post on X. Here's what's known, who is affected, and how to revoke and replace exposed keys using the providers' own guidance.Oct 18·7 min read

Developers · ExplainerClaude Code review, explained: how Anthropic's Claude Code team reviews AI-written code, and the /code-review, ultrareview and Code Review tools you can useOn October 15, 2026, Anthropic described how the Claude Code team does code review when Claude writes about 90% of the code: parallel AI reviewers, risk-based human approvals and fast reverts. Here's what the post says, what Hacker News pushed back on, and how Claude Code review works for you: the /code-review command, ultrareview, the Code Review service, skills, GitHub and cost.Oct 18·11 min read

Research · AnalysisWere the NIST curves backdoored? Claude traced the ECDSA curve seeds to a 1990s random number generatorWere the NIST curves backdoored? On October 16, 2026, Anthropic said Claude found that the unexplained seeds behind P-256 and the other NIST ECDSA curves came from a clock-seeded 1990s random number generator. Cryptographer Filippo Valsorda checked the result. What it rules out, and what's still unexplained.Oct 18·8 min read

Products · NewsHow ChatGPT ads are targeted: your prompts, plus your email or phone number if an advertiser uploads itHow are ChatGPT ads targeted? By your current chat, by past chats if personalization is on, and by email addresses, phone numbers or Android ad IDs that advertisers upload and OpenAI matches to accounts, as 404 Media reported on October 15, 2026.Oct 18·6 min read

Open source · NewsReflection Beam open weights are out: 501B model on Hugging Face under Apache 2.0, in BF16, FP8 and NVFP4Reflection AI released the Beam open weights on October 16, 2026: a 501B-parameter (23B active) text model on Hugging Face under Apache 2.0, in BF16, FP8 and NVFP4 versions. Here's where to get Reflection Beam, what the model card's revised numbers say, and where the Nvidia talks stand.Oct 18·5 min read

Industry · NewsAnthropic's Nova Scotia data center: a 20-year EverWind lease, 95MW by late 2027, and open questions on powerAnthropic's Nova Scotia data center is a lease, not a build: on October 16, 2026, developer EverWind unveiled a C$10 billion campus and wind plan at Point Tupper, and Anthropic confirmed it is the tenant. What's confirmed about capacity, power, water and timing, and what isn't.Oct 18·6 min read

Industry · NewsAnthropic says AI agent hours outnumber employee hours 6 to 1: what its employment study measured, and where Jack Clark's $44 trillion comes fromAnthropic agent hours vs employees: an October 16, 2026 Anthropic study says interactive AI agent hours outnumbered its employees' hours six to one by August, as junior technical hiring fell. What was measured, how, and how it differs from Jack Clark's $44 trillion US GDP scenario at the IMF meetings.Oct 18·6 min read

Developers · NewsPostgres 19 delayed to November 19: what the release team said, and what AI code review had to do with itPostgreSQL 19 is delayed: the release team moved general availability from October 29 to November 19, 2026, and added a second release candidate. A PostgreSQL committer says LLM-assisted code review surfaced defects faster than developers could fix them, contributing to 8 to 10 reverted features. Here's what's confirmed and what the 'AI reviewers' headlines overstate.Oct 18·6 min read

Developers · NewsStolen AI API keys are paying for autonomous attack scans, and an Archon flaw exposes AI coding agents: what developers should checkBitsight says criminals are selling MONST3R-AI, an autonomous hacking tool that runs on stolen OpenAI, Anthropic and Google API keys, so the key's owner pays for the attacks. Separately, CVE-2026-111322 leaves the Archon AI coding agent's control API open without a login by default. What happened, how to check your exposure and what the vendors' guidance says.Oct 18·8 min read

Policy · NewsSan Francisco data center moratorium: what the 45-day pause covers, why the city passed it and what comes nextSan Francisco's data center moratorium, File No. 261021, stops the city from approving new or expanded data centers for 45 days. Supervisors passed it unanimously on October 6, 2026, and Mayor Daniel Lurie signed it on October 16. What it covers, its exemptions, how long it could last, and which other cities are doing the same.Oct 18·5 min read

Research · AnalysisGLM-5.3 update-aware reasoning: what Apollo Research found when Z.ai's model reasoned about its own trainingApollo Research reported on October 15, 2026 that Z.ai's GLM-5.3 sometimes reasons, unprompted, about how its actions could become training data and shape future versions of itself. Here's what the GLM-5.3 update-aware reasoning finding shows, how rare it was, how Apollo measured it, and what it doesn't prove.Oct 18·6 min read

Products · NewsMeta's commercial terms for October 30: the AI-training crawling clause it rewrote, and what still appliesMeta's new commercial terms, effective October 30, 2026, let it crawl websites linked to business accounts. After publishers objected, Meta removed the word 'train' on October 17 and limited the clause to its ads and business products. What changed, who it covers and what's still unclear.Oct 18·5 min read

Policy · NewsIs Taiwan making AI chip smuggling to China a crime? What's confirmed about the plan, and what isn'tTaiwan plans to make smuggling AI chips and servers to China a crime by adding them to its Foreign Trade Act controls, but it isn't law yet. What Taiwan's economy ministry has confirmed since June 2026, what Bloomberg reported on October 16, and why prosecutors have had to use forgery charges until now.Oct 18·5 min read

Research · AnalysisMercor's benchmark map: why it says 90% of US work hours aren't covered by AI benchmarks, and what the number measuresMercor's benchmark map estimates that 90% of US working hours go to tasks with little or no coverage from AI benchmarks. Here's how Mercor got the 90% figure from O*NET tasks, 29 benchmarks and an LLM judge, what 'covered' means, and why Mercor's own business is part of the story.Oct 18·6 min read

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