Blog: AI use cases, comparisons, practice
What artificial intelligence actually delivers at work, use cases, head-to-head comparisons and experience from real deployments. Individual reviews live in the tool overview.
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AI use casesLatest article
AI photo editing: retouch, extend and enhance images with AI
Remove a stranger from the picture, swap the background, rescue an old photo or simply say what should change: which tools edit images with AI, what is free and where law and data protection draw the line.
Law & privacy
Meta AI in WhatsApp: switch it off, object, protect your chats
The icon in the chat window cannot be removed, the chain letter about AI reading your chats is wrong, and you can still object to AI training. What Meta AI can see in WhatsApp and what you can do about it.
Practice
AI detectors: how reliably can AI-written text be spotted?
GPTZero, ZeroGPT, Turnitin and others promise to expose AI text. Research says otherwise: they err in both directions, and humanizers defeat them. What detectors can do, what watermarks change and what German courts require as evidence.
Guides
Google AI Mode: what it can do and how to search without AI
Since October 2025 Google has been answering searches in Germany as a conversation too. How to open AI Mode, where it gets things wrong, what it stores, and why it cannot be switched off but can be bypassed.
Guides
ChatGPT alternatives: which AI instead of ChatGPT?
Ads on the free plan, data in the United States or simply wanting a second opinion: there are good reasons to look for another AI. The alternatives, sorted by the reason for switching.
Comparisons
Claude vs. ChatGPT: the head-to-head comparison
A tenth of a point separates the top two in our ranking. Where Claude leads, where ChatGPT does, what the plans cost, and what changed in September with GPT-6 and Claude Opus 5.5.
AI use cases
Rewriting text with AI: which tool for which purpose
Shorter, more formal, friendlier, simpler: rephrasing is where AI helps more reliably than almost anywhere else. DeepL Write, LanguageTool, Grammarly, Duden or simply a chatbot? And why rewriting does not fool an examiner.
Guides
Image to video with AI: how a photo becomes a moving clip
Upload a still, describe the motion, and the clip is done. Why the source image matters more than the prompt, which tool suits which job, and what the law says about photos of people.
Practice
Creating AI videos for free: what still works without a subscription
Sora has been shut down, Gemini requires a subscription, and many free tiers have shrunk to a one-off starter credit. Which routes remain, what a free clip is good for, and when a small subscription costs less than chasing credits.
Practice
Creating AI images for free: what the free tiers really offer
Seven routes to an image without a subscription, from Copilot and Gemini to your own computer. How many images you get, who can see them, and when a free image becomes a risk on a company website.
AI use cases
NotebookLM: Google's AI research tool for your own source collection
Rather than querying the whole web, NotebookLM answers only from the documents you give it, with citations. Since July it has been called Gemini Notebook. What it is good for with contracts, dossiers and onboarding, where it falls short, and how it handles your data.
Practice
Local AI with Ollama and LM Studio: language models on your own machine
Open models such as Llama, Mistral, Gemma or Qwen now run on a well-equipped laptop. What the two most common tools for the job do, which hardware you need, and where the data protection advantage ends.
Comparisons
Presentations with AI: Gamma, Canva and Copilot compared
A text or a document becomes a slide deck in minutes. Four tools, four approaches, and one mistake almost everyone makes on the first attempt: the content gets left behind.
AI use cases
Suno and Udio: AI music for video, podcasts and advertising
A line of text becomes a finished song with vocals, lyrics and arrangement. What the two tools deliver, what they cost, and why usage rights are the real question for businesses.
Comparisons
AI meeting assistants compared: Otter, Fireflies, tl;dv or just Copilot?
A bot listens in, writes along and delivers minutes and a task list after the call. What these tools actually do, where they mishear, and why in Germany the legal question comes before the feature question.
Video AI in focus
CapCut: AI features inside the editor itself
ByteDance's video editor has grown into a toolbox with script-to-video, avatars and voice cloning. For short social formats it is the shortest route from idea to finished clip.
Video AI in focus
HeyGen: avatar video for training, sales and support
A script becomes a video with a talking avatar, in over a hundred languages. Where that holds up, where it shows, and what it requires legally.
AI use cases
AI use cases at the office: seven tasks where it pays off
Not every task suits AI. These seven do, with realistic time savings, the right tools and the places where a human still has to check.
Video AI in focus
Kling 3.0: longer clips and characters that stay the same
Kuaishou's model targets what most video AI fails at: length, and recognisability across several shots.
Video AI in focus
Seedance: multi-shot clips in which the product stays the same
The model from the ByteDance orbit is cited mainly for advertising and retail, because logos, packaging and text are meant to stay stable across shots.
Comparisons
ChatGPT, Claude or Gemini? Which AI assistant fits which task
Three assistants, six tasks from a normal working day, identical conditions. The result is clearer than the scores suggest, and different from what many expect.
Video AI in focus
Higgsfield: camera work instead of lucky hits
The platform bundles several video models and adds a layer on top for camera moves, character consistency and a production pipeline.
Video AI in focus
Krea: many models under one interface
Rather than committing to a model of its own, Krea bundles other people's image and video models and makes them comparable. For the selection phase that is practical.
Video AI in focus
InVideo AI: from one sentence to a finished social clip
One prompt, one platform choice, and out comes a video with script, voiceover, footage, captions and music. The fastest route for beginners, with clear limits.
Video AI in focus
Freepik: AI video inside a subscription many already have
The stock library has turned into an aggregating interface for dozens of AI models. For agencies with an existing subscription it is the most convenient entry point.
Video AI in focus
Runway: the toolbox when it goes beyond a single clip
Runway is more than a generator: masking, retouching, style transfer and camera control make it a small post-production suite. What that means day to day.
Video AI in focus
Google Veo 3.1: picture and sound from one pass
Veo generates video together with matching audio and is regarded as the benchmark for lip sync. Interesting above all for anyone already working inside Google.
Guides
Choosing an AI tool in five steps
Starting from the question “which tool is best?” usually means buying past your actual need. This order gets you there more reliably.
Law & privacy
AI tools and the GDPR: what companies really have to check
Not every AI tool is ruled out on data protection grounds, but every one needs a check. An overview of the points that actually count.
Practice
Free AI tools: how far you get without a subscription
For many tasks the free tiers go surprisingly far. Where the limit runs, and when a subscription starts to pay off.
Matching the articles: our reviews
Every article links to the tools it discusses. Start with the tests: