Základy AI a praktické návody

Claude Memory: How to Control What Claude Remembers

Claude memory is on by default on the Free, Pro and Max plans, it now carries context between chat and Cowork, and deleting a conversation does not delete what…

Grok vs Gemini: Which AI Is Actually Better in 2026?

Grok 4.6 and Gemini 3.1 Pro cost almost the same to run, but they are built for different jobs. Gemini is the better default for most people. Grok is the sharper…

What Is Artificial General Intelligence (AGI)? Definition, Examples and Where We Actually Are

Artificial general intelligence is an AI that matches human ability across essentially every cognitive task, and it does not exist. What changed recently is that…

Microsoft Copilot vs ChatGPT in 2026: Which One Should You Pay For?

Almost every Microsoft Copilot vs ChatGPT comparison online still pits Copilot Pro against ChatGPT Plus at $20 each. Copilot Pro stopped selling in October 2025 and…

Microsoft Copilot Pricing in 2026: Every Plan and What You Really Pay

Microsoft Copilot ranges from free to $30 per user per month, but the advertised price is never the bill. Every business tier is an add-on that sits on top of a…

Claude Tag: What It Is, How It Works in Slack, and Who Can Use It

Claude Tag put a shared @Claude inside Slack channels, and it replaced the old Claude in Slack app on 3 August 2026. Here is what it does, who can get it, and what…

How to Use Microsoft Copilot in 2026: Every Version, Step by Step

Learning how to use Microsoft Copilot starts with a question nobody expects, which is which Copilot you actually have. Two different products now share the name…

Gemini Gems: What They Are, What They Can Do, and Where They Stop

Gems are saved, reusable versions of Gemini, free on every plan. Here is what they can do, the limits Google never publishes, and what sharing one gives away.

ChatGPT Memory: How It Works and How to Delete It

ChatGPT rebuilt how it remembers you on 4 June 2026, and almost every guide still describes the old screen. Here is how the memory summary works, how to delete what…

The Best AI Browser: Which Ones Actually Still Work

Most best AI browser lists still recommend software that stopped working. Here are the ones that survived, what they cost, and whether they are safe.

ChatGPT Projects: How They Work and How to Use Them

ChatGPT Projects keep one long-running job in a single workspace: its chats, its files and its own instructions. Here are the real file limits, the sharing rules…

AI Job Interview Practice: How to Rehearse Before a Machine Screens You

Everyone used AI to write their application, so employers added a machine to screen it. Here is how to rehearse against the thing that is actually scoring you, and…

What Is Microsoft Copilot? Every Version, Price and Model in 2026

Microsoft Copilot is Microsoft’s AI assistant, built into Windows, Edge and the Microsoft 365 apps. As of August 2026 the name covers two completely different…

ChatGPT Privacy: What OpenAI Collects and Who Can See It

ChatGPT collects more than most guides admit, and three of the facts you have probably read about it are now out of date. Here is what OpenAI actually stores, who…

AI Watermarks Explained: How to Check for Them and How to Remove Them

An AI watermark is not one thing. It is a visible logo you can crop away and an invisible signal you cannot, and since 2 August 2026 European law requires the…

Is ChatGPT Allowed in School? The AI Rules That Actually Apply to You

Is ChatGPT allowed in school? Usually yes, with conditions. Here is the three-layer rule that decides it, a task by task table of what you may and may not do, and a…

Gemini Study Notebooks: How to Study With Google's Free AI Tutor

Gemini study notebooks turn your lecture notes into an adaptive tutor with a diagnostic quiz and a progress dashboard. Here is how to make one, what it costs, and…

Claude vs Gemini vs ChatGPT: Which One Should You Actually Use?

Claude Opus 5, GPT-5.6 Sol and Gemini 3.1 Pro compared on coding, writing, research and price. A short verdict per task, the benchmark story nobody else is telling…

Claude vs Gemini: Which One Should You Actually Use?

Claude leads the benchmarks and Gemini leads on price, speed and reach. We compare Claude Opus 5 and Gemini 3.1 Pro on coding, writing, research, cost and the…

Google AI Pro pro studenty v roce 2026: Je rok zdarma stále k dispozici?

Pokud jste sem přišli získat rok Google AI Pro zdarma jako student, máte dobré načasování. Nabídka je zpět. Google 19. srpna 2026 znovu spustil svůj studentský…

Best AI for Translation: What the Only Independent Test Found

Almost every list answering this question is published by a company selling a translation product. The one independent evaluation that grades output by hand reaches…

Best AI for a Cover Letter? What the Evidence Actually Says

Several of the reassuring statistics you will meet on this topic do not survive a check against their own sources. The research that does hold up says something…

Nano Banana Pricing: What Google’s Image Models Really Cost in 2026

There is no standalone Nano Banana subscription. You either get it inside a Google AI plan starting at $4.99 a month, or you pay per image through the Gemini API…

How to Replace Siri With ChatGPT, Claude, or Gemini

Every guide telling you how to replace Siri with ChatGPT gives a different Settings path, and two of the three menus do not exist. Here is what actually works today…

How to Use Nano Banana: Google’s Image Model, Explained Step by Step

Nano Banana is not labelled anywhere in the Gemini app, which is why so many people cannot find it. Here is where it actually lives, which of the four versions you…

Which AI Is Best for Resume Writing? Claude, ChatGPT and Gemini Tested

Three chatbots, one resume, one job description. None of them invented a statistic. One of them quietly claimed nine competencies the candidate never had, which is…

Google Classroom AI: What It Does and What It Can’t Detect

The short answer most people arrive looking for is this. Google Classroom AI cannot tell you whether a student used ChatGPT. Classroom has no built-in AI detector…

Claude Code Permissions: What Auto Mode Lets Claude Do Without Asking

In a controlled study of 1,053 paid testers, Anthropic swapped one permission prompt for a clearly dangerous command and watched who caught it. The humans caught it…

Best AI for Math: Which Model Actually Solves It

The best AI for math right now is Claude Opus 5, which sits at the top of MathArena‘s cross-competition ranking with an expected score of 84.4%. That is the short…

AI Voice Detector: How to Tell If a Voice Is AI-Generated

Every AI voice detector on the first page of Google advertises something close to 99% accuracy. ElevenLabs, which builds one of them, states plainly on its own tool…