# Tools – Dein privater Assistent

> ChatGPT, Claude, Copilot and others: which tool suits which job.

- [ChatGPT vs Claude: Which One for Which Job](https://dein-privater-assistent.de/en/tools/chatgpt-vs-claude/): ChatGPT is the broader package, with image generation, a polished voice mode and a huge library of custom GPTs. Claude stands out with long documents, careful writing and project workspaces built around your own files. Both charge $20 a month for an individual plan and have usable free tiers. Your own test with real tasks should settle it.
- [How to Write AI Prompts: Six Parts, Real Examples](https://dein-privater-assistent.de/en/tools/how-to-write-ai-prompts/): A good AI prompt tells the model what to do, why you need it, what material to use and what the answer should look like. Adding one to three examples of the output you want improves results noticeably. Anthropic's guide offers a simple test: if a colleague with no background would be confused by your prompt, the model will be too.
- [Copilot vs ChatGPT: Which One Fits a Microsoft 365 Office](https://dein-privater-assistent.de/en/tools/copilot-vs-chatgpt/): If your company runs on Microsoft 365, you probably already have Copilot Chat at no extra cost: a web-grounded chat with enterprise data protection. The full Microsoft 365 Copilot is a paid add-on that reads your mail, files and calendar. ChatGPT is the more versatile standalone tool. For Microsoft 365 offices, Copilot Chat is the obvious place to start.
- [Build Your Own AI Assistant Without Code: A Template](https://dein-privater-assistent.de/en/tools/build-your-own-ai-assistant/): To build your own AI assistant, set up a custom GPT or project in ChatGPT, a project in Claude, a Gem in Gemini or an agent in Copilot, then add standing instructions and reference files. The model isn't retrained; it reads your setup at the start of every chat. Precise instructions, clean files and a ten-question test decide whether it works.

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