Aravind Arumugam.
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Technical articles on Cyber Security, IoT, Smart Metering, and AI.

Claude runs a 50,412-account revenue forecast overnight, then backtests itself
Featured4 Sept 2026

Claude runs a 50,412-account revenue forecast overnight, then backtests itself

Anthropic's demo shows Claude Fable 5.1 rebuilding a company's revenue forecast unattended, grouping 50,412 accounts by spending behaviour and running 10,000 scenarios per cohort. Asked how accurate it has been, it backtests four quarters of its own forecasts. And it still cannot publish without a human approving it.

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Claude Fable 5.1: what actually changed
Ai1 Sept 2026

Claude Fable 5.1: what actually changed

Three commands to get on Fable 5.1 - and the first is where most people stop. Both my machines were too old to run it.

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Anthropic deleted 80% of Claude Code's system prompt. Here is what replaced it
Ai27 Aug 2026

Anthropic deleted 80% of Claude Code's system prompt. Here is what replaced it

Every change Anthropic made when they cut 80% of Claude Code's system prompt, with the actual before and after: the comment rule they deleted, the Todo enum, ToolSearch deferred loading, and where each instruction should live.

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Kimi K3: Moonshot AI's 2.8 Trillion Parameter Open Model, Explained
Ai27 Jul 2026

Kimi K3: Moonshot AI's 2.8 Trillion Parameter Open Model, Explained

Kimi K3 is Moonshot AI's 2.8 trillion parameter open-weight model, the largest released to date. Here is what it is, how good it really is, and what to make of its headline launch demos.

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Claude Certifications Explained: Associate, Developer and Architect
Ai9 Jul 2026

Claude Certifications Explained: Associate, Developer and Architect

Anthropic's Claude Certification Program now offers four credentials for Associate, Developer and Architect roles, priced from $99 to $175.

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Claude Desktop Is on Linux: Install It in Two Minutes
Tutorial3 Jul 2026

Claude Desktop Is on Linux: Install It in Two Minutes

Claude Desktop is now on Linux in beta. The exact commands to install it on Ubuntu or Debian, what you get, and what is missing.

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Aravind Arumugam.

Cyber Security Practitioner, Embedded Systems specialist, and Full Stack AI Developer.

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