Gemini
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How to Use AI on a Spreadsheet and Still Trust the Numbers
Make the AI calculate rather than read, then check its work against one number you already trust. A five-step routine, a prompt, and a worked example.
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Why AI Gives Different Answers to the Same Question
AI picks each word by weighted chance, and the dial that used to calm that down is being removed. Why answers vary, and how to use the variation as a check.
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Multimodal AI Explained: What Happens to the Photo You Upload
An AI model never sees your photo, only a copy cut into squares and often shrunk first. What that costs, what the vendors say it gets wrong, and what to do.
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How to Summarise a Long Document With AI Without Losing the Point
AI summaries of long documents tend to drop what sits in the middle. Here are five prompts, each with a one-minute check, to find what the summary left out.
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Nine AI Prompts for Work That Check Their Own Answers
Nine copy-and-adapt prompts for summaries, emails, policies, tables and meeting notes, each built so you can see at a glance when the answer has gone wrong.
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What “Free” Actually Gets You on ChatGPT, Claude and Gemini
Listicles quote free-plan message caps. ChatGPT, Claude and Gemini publish none. What each free plan really includes, and where to see your own limit.
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Fine-Tuning vs RAG vs Prompting: Which One You Actually Need
Want an AI that knows your business? You probably need a better prompt, not training. A symptom-to-fix table, plus OpenAI’s fine-tuning wind-down dates.
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Reasoning Models Explained: What AI “Thinking” Actually Is
The thinking you watch scroll past is a summary, not the model’s working. What reasoning tokens are, what they cost, and when the extra wait is worth it.
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Tokens, Pricing and Why Your AI Bill Looks Like That
Why an AI chatbot costs several times what its visible text suggests, worked through one 10-turn chat at Claude, OpenAI and Gemini prices checked 25 Oct 2026.
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Why AI Forgets Mid-Conversation: Context Windows, Explained
A context window is everything an AI model can see at once. How tokens fill it, why answers slip long before it is full, and what to do in long chats.
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A Practical Guide to Prompting
Most prompting advice is folklore. These are the techniques that reliably change output quality, why they work, and the ones you can safely ignore.
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Why AI Makes Things Up (And What to Do About It)
AI models invent facts because inventing facts and recalling them are the same operation. Here is what causes it, what it looks like in the wild, and the habits that catch it.