How do I open an AI assistant with a keyboard shortcut in Windows?
Alt+1 opens Zack KI with your selection, Alt+2 a blank chat and Alt+Shift+1 your last chat. You can change every shortcut.
Guides for Zack KI
Answers for common tasks: what Zack KI does, how to do it and where the limits are.
Help right inside your app
How can I ask AI about selected text without copy and paste?
Select text in any app and press Alt+1: Zack KI attaches the selection to your question and leaves your clipboard as it was.
How do I get the AI answer into the email or document I’m writing?
Click “Insert” on a text block in the answer: Zack KI puts it into the app you used last, at the cursor or in place of your selection.
How do I fix text with AI right in Word or Outlook?
Select, press Alt+3 or Alt+4: Zack KI improves the text or fixes its errors and replaces your selection in place.
Writing and reading
How do I rephrase text with AI so it reads more clearly?
“Improve” rewrites selected text more clearly with as few changes as useful and keeps meaning, language, tone, names and numbers.
How do I check spelling and grammar with AI in any Windows app?
Select text and press Alt+4: “Fix errors” corrects spelling, grammar and punctuation with the smallest edits and keeps your wording.
How do I summarize a long text or have it explained in plain language?
Select the text, press Alt+1 and click “Summarize” for the key points or “Explain” for its meaning in plain words.
How do I translate selected text with AI on Windows?
Select the text, press Alt+1 and type “Translate into Spanish”: the translation comes as a text block you can insert or copy.
How do I write email replies faster with AI in Outlook or Gmail?
Select the email, press Alt+1 and say what you want to answer. Or write a rough reply and let Alt+3 polish it. You check and send.
How do I set up my own AI actions for recurring tasks?
Rename the four chips, give them your own instructions and a shortcut, for example “Formal” or “Tasks”.
Files, screen and web
How can I have AI analyze a PDF or Excel file?
Select a file in Explorer, press Alt+1, ask: Zack KI reads PDF, Word, Excel, PowerPoint, image and text files.
How do I ask AI about something on my screen?
Press Alt+1 with nothing selected, drag a box around the error message or chart, and type your question.
How do I get current AI answers with sources?
Zack KI searches the web on its own when a question needs current facts, and lists the sources it used.
Answers that suit you
When should I use Quick and when Deep?
Quick for short, fast answers; Deep for complex questions that need more thought.
How do I make the AI answer in my style?
Write your preferences once under “Custom instructions”, choose an answer length, and adjust single answers by editing or regenerating.
How do I find and continue an old AI chat?
Open “Show chats”, search titles and messages, and continue any chat. Copy it as Markdown or set how long chats are kept.
Data, costs and setup
What happens to my chats and files in Zack KI?
Chats stay on your PC; only what you send with a question goes out. You set retention, diagnostics and account deletion yourself.
Is Zack KI free to use?
Yes: Zack Free gives you 500 credits when you sign in and 100 more each week for Quick answers, files and screenshots.
Can I use Zack KI with my own API key or a local model?
OpenAI, OpenRouter, Groq, Mistral, DeepSeek, xAI or a local model through Ollama and LM Studio: Zack KI uses your provider, without Zack credits.
How do I install and set up Zack KI on Windows?
Install from the Microsoft Store or the website, sign in with Google or email, and Zack KI waits in the notification area for Alt+1.
Try Zack KI with your next question.
Download the Windows app and sign in.