Do I need to install an app?

No. Günther works entirely within WhatsApp — you just chat like with a contact. No download, no separate account.

How secure is my data?

Your data is processed GDPR-compliantly. Conversations are encrypted and automatically deleted after 30 days. You can delete all data at any time via /forget.

Which languages are supported?

Günther responds in German and English. The translation feature supports over 50 languages. You can change the language at any time with /language.

Can I cancel anytime?

Yes, anytime. No subscription lock-in, no notice periods. The Free plan stays free forever.

What AI powers Günther?

Günther uses OpenAI GPT-4.1-nano for text, SuperSpeech for ultra-fast voice transcription, and FAL AI for image generation. All in one WhatsApp chat.

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AI summaries in WhatsApp

Long articles, email threads, or voice memos distilled in seconds — as TL;DR, bullet points, or executive summary. Directly in WhatsApp, no copy-paste into another tool.

Quick facts at a glance

AI model: OpenAI GPT-4.1-nano, tuned for speed and precision
Variants: TL;DR, bullet points, executive summary, short/long
Languages: 50+ languages, translation included
Input: Text, email content, transcribed voice memos
Export: PDF via /pdf, forward straight from WhatsApp

Summary in 4 steps

Send text or voice

Paste the article, thread, or text into the WhatsApp chat — or send a voice memo that Günther transcribes first.

Choose style and length

Reply with 'Summarize' or be more specific: 'TL;DR in 3 sentences', '5 bullet points', 'executive summary', 'explain for non-technical readers'.

Receive the summary

Günther replies within seconds with a compact, consistently formatted summary — powered by GPT-4.1-nano.

Refine or export as PDF

Ask for more: 'shorter', 'with examples', 'in German'. Or send /pdf for a cleanly formatted document to forward.

What you get

✓Quick overview instead of reading long texts
✓Consistent style across all summaries
✓Multiple length variants (TL;DR, bullets, executive)
✓50+ languages — input and output freely chosen
✓Ideal for newsletters, reports, minutes, articles

Pricing

Text chat is unlimited on every tier. Voice transcription: FREE 5 min, BASIC 30 min, PREMIUM 120 min per month.

More relevant features

AI Chat Document Analysis PDF from chat

FAQs

How long can the input be?

WhatsApp allows up to ~65,000 characters per message. For very long texts, split them across messages — Günther can hold context across multiple messages.

Can Günther summarize PDFs too?

Yes. Send the PDF directly in chat (up to ~10 MB). Günther extracts the text and summarizes. See also our Document Analysis page.

How good are summaries of technical texts?

GPT-4.1-nano is strong on business, legal, marketing, and general topics. For highly specialized texts (e.g. medical studies), we recommend verifying results against the original.

Are my texts used for training?

No. Günther uses OpenAI via API — per OpenAI's API policy, API data is not used for model training. We additionally delete chats after 30 days automatically.

Can I save a style for recurring summaries?

Via /erinnerung you can tell Günther your preferences, e.g. 'always summarize in 5 bullet points, formal tone'. It's stored as memory and applied on every new summary.

Try it free now

No download, no setup. Just start chatting in WhatsApp.

Start chatting View pricing