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Guides

Plain answers to the questions people ask before an AI project: what it costs, how to evaluate a developer and which tools to use. Every assumption is written down so you can redo the maths with your own numbers.

How Much Does a Custom RAG System Cost to Build and Run?
What drives the cost of building a custom RAG system, how to estimate monthly running costs from token volumes, and three worked scenarios with every assumption written down.
How to Hire an AI Developer: A Checklist for Startups and Small Teams
How to evaluate an independent AI developer: a scoping checklist, questions to ask, what to check in the code at handover, an evaluation plan and a delivery process that protects you.
n8n vs Custom Python for AI Workflow Automation
The same AI lead-intake workflow built in n8n and in custom Python, with the maintenance tradeoffs of each and when to choose which, or both.
PHP2Shell (CVE-2026-109618 and CVE-2026-109619): How the PHP Bugs Work, What They Can Cost You and How to Patch
The two critical PHP remote code execution bugs fixed on 21 October 2026, explained in plain terms: how the attacks work, which servers are most at risk, what a break-in can cost, and how to patch supported and end-of-life PHP versions.