Yes, installation is free and you can immediately transcribe voice messages without a credit card. Optional Basic and Pro plans provide unlimited transcriptions, unlimited translation sessions, intelligent transcription, and more scheduled messages.

Is the extension secure? What data does it access?

The extension runs exclusively on WhatsApp Web and works with chats you already have open. Your history remains encrypted on your own device; message contents are not stored on Kaption's servers. Audio sent for transcription is processed and discarded once text is returned. Your conversations are never used to train AI models.

Does it work with WhatsApp Business?

Kaption complements web.whatsapp.com and works with the account signed in to that tab. It is a browser extension, not an integration of the official WhatsApp Business API, so Cloud API numbers are not connected.

Does it work in Microsoft Edge?

Yes, Kaption works in Microsoft Edge.

Browser Extensions & Plugins · United States

Kaption AI

WhatsApp voice messages to text with AI

Try kaptionai.com (new tab)0 votes. Log in to give Kaption AI a nod

Community votes: 0
DR by Ahrefs: 19 no change since last check

Ahrefs Domain Rating benchmarked 25 Oct 2026, rebuilt 25 Oct 2026.

Kaption AI metrics

Benchmarks for kaptionai.com: Ahrefs Domain Rating and Majestic link data, with the change since the last build.
Metric	Value
Domain Rating	19 no change since last check
Trust Flow	6 no change since last check
Citation Flow	30 no change since last check
Referring domains	181 no change since last check
External backlinks	2,486 no change since last check

Ahrefs Domain Rating benchmarked 25 Oct 2026, rebuilt 25 Oct 2026. Main build topic: Arts/Performing Arts (5). Majestic benchmarked 25 Oct 2026, rebuilt 25 Oct 2026. Link data built by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

Kaption AI domain build sheet

Public RDAP record, last read 25 Oct 2026, 21:50 UTC.
Domain age	3 years
Registered	23 Dec 2022
Expires	23 Dec 2026
Registrar	Cloudflare, Inc.
DNSSEC	Not signed

Inspect kaptionai.com's registration

Browser extension that transcribes WhatsApp voice messages, summarizes chats, and suggests AI-powered replies for Chrome, Edge, and desktop apps.

What it is

Screenshot of the Kaption AI homepage — kaptionai.com, as visitors see it

Kaption AI is a browser extension for Chrome and Edge that transforms how users interact with WhatsApp Web by transcribing voice messages to text. It automatically converts audio to text in chats, summarizes long conversations, and integrates AI assistants like Claude and ChatGPT through MCP connections. The extension also translates messages across 36 languages, records WhatsApp calls with transcripts, schedules messages, sets reminders, and exports contacts and chat histories. All transcription and conversation data remains encrypted on the user's device, with audio only sent to Kaption's servers temporarily for processing. The service is available free with limited features, or as paid Basic and Pro plans with unlimited transcriptions and additional tools.

What it is built with

Voice message transcription with automatic text conversion
Chat summarization with AI
Live translation in 36 languages
WhatsApp call recording with transcripts
Integration with Claude and ChatGPT via MCP
Kanban board for chat organization
Scheduled messages and reminders
Contact export and group member download
Privacy mode and screen lock
Support for multiple WhatsApp accounts on desktop

Pricing

Pricing model: Freemium

Free: no credit card required. Basic: US$5.99/month (US$4.99/month quarterly, US$3.99/month annually). Pro: US$9.99/month (US$7.99/month quarterly, US$5.99/month annually). Also available in Brazilian Real: Basic from R$29.99/month, Pro from R$49.99/month.

See Kaption AI's full pricing (new tab)

Compare and explore

Questions from the bench

Is Kaption AI free?: Yes, installation is free and you can immediately transcribe voice messages without a credit card. Optional Basic and Pro plans provide unlimited transcriptions, unlimited translation sessions, intelligent transcription, and more scheduled messages.
Is the extension secure? What data does it access?: The extension runs exclusively on WhatsApp Web and works with chats you already have open. Your history remains encrypted on your own device; message contents are not stored on Kaption's servers. Audio sent for transcription is processed and discarded once text is returned. Your conversations are never used to train AI models.
Does it work with WhatsApp Business?: Kaption complements web.whatsapp.com and works with the account signed in to that tab. It is a browser extension, not an integration of the official WhatsApp Business API, so Cloud API numbers are not connected.
Does it work in Microsoft Edge?: Yes, Kaption works in Microsoft Edge.

Find Kaption AI online

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