Tutorials

Most people pick AI models on instinct — one prompt, one answer, no controls. Here's how to run fair side-by-side comparisons in minutes and actually know which model fits your work.

CoreAI's 13 free converters turn PDFs, HTML, Notion, Google Docs, and more into clean Markdown. Who needs Markdown conversion, why, and the two-minute audit to run on every output.

Five free AI naming tools plus the process that makes them work: generate 100 candidates, filter with four brutal tests, and verify domains and trademarks before you commit.

Six free CoreAI tools let you interrogate PDFs, Word docs, text, and websites in plain English. Real workflows for contracts, research papers, and reports — plus the habits that keep answers trustwort

Prompt engineering in four levers — role, context, format, constraints — with before/after examples and three free tools that build, optimize, and outline your prompts for any AI model.

Kimi K3, GPT-5.6, Claude Sonnet 5 — the models topping the leaderboards are not developer-only. A step-by-step guide to chatting with all of them in one app, no API key in sight.

CoreAI's free AI Resume Writer and Cover Letter Generator get you a strong draft fast. Here is the workflow, the ATS rules, and the honest list of things you must edit yourself.

Eight free FAQ generators — for websites, PDFs, DOCX, Google Docs, and Notion — plus the FAQPage schema workflow that turns ordinary pages into People Also Ask and featured-snippet winners.

Three free CoreAI tools cover almost every email you will ever send. Here is which one to use when, plus prompt patterns that control tone and length so drafts sound like you.

Eleven free sitemap tools, one workflow: check, validate, extract, compare, analyze, generate, split, and wire your XML sitemap into robots.txt — the full SEO audit loop without paying for a single su

The free tier gives you 50 requests a day. Here is exactly where OpenRouter's limits sit, why 429 errors show up early, and the retry playbook that keeps your requests flowing.

Thinking mode is the AI equivalent of 'let me get back to you' — slower, pricier, and sometimes dramatically better. Here's a plain-English guide to what reasoning does, when it pays off, and when it'