Callabo: Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams. Sonnet AI: Bot-free AI meeting assistant that records device audio, transcribes, and generates structured notes and action items across major conferencing apps. Here's where each one pulls ahead on pricing, features, and the meetings it suits best.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Callabo when turning recurring internal team meetings into shareable summaries and action items matters most, and Sonnet AI when recruiters documenting candidate interviews with structured templates matters most. Try them side by side on real calls before deciding — needs vary by team.
Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams.
Bot-free AI meeting assistant that records device audio, transcribes, and generates structured notes and action items across major conferencing apps.
Callabo (콜라보) is an AI meeting assistant developed by Return Zero (리턴제로), a Korean speech-AI company. It automatically records, transcribes, summarizes, and analyzes business meetings for both individuals and enterprise teams, aiming to turn a one-hour meeting into organized notes with a single click and no complex setup. Callabo connects to online meetings on Google Meet, Microsoft Teams, Zoom, and Webex, and also supports recording in-person meetings. After a meeting it produces transcripts, paragraph summaries, key discussion points, and action items with timestamped source quotes, and it can automatically detect the meeting language to handle multilingual conversations. An AI chat feature lets users ask follow-up questions about a meeting beyond the generated insights. The service integrates with workflow tools including Google Calendar, Outlook, Salesforce, Pipedrive, HubSpot, Slack, Microsoft Teams, Zapier, Notion, Confluence, and Linear. For enterprises, Callabo provides meeting access controls, team and member permission management, original-media retention settings, two-factor authentication, IP access restrictions, and audit logs, and it holds ISO/IEC 27001 certification. Mobile apps are available for both iOS and Android. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Sonnet AI is an end-to-end AI meeting assistant and notetaker that captures conversations without sending a separate bot into the call. Instead of joining as a visible participant, it records high-quality audio directly from the user's device, which lets it work across Zoom, Google Meet, Microsoft Teams, Slack and Discord without per-platform integrations or plug-ins. Once a meeting ends, Sonnet produces a transcript and a structured set of notes, pulls out action items with potential assignees and deadlines, and stores everything in a searchable conversation database so users can revisit past discussions. It offers a template gallery aimed at specific contexts such as sales, recruiting, legal and medical meetings, along with customizable note layouts that support elements like tables and concept maps. Additional features include meeting reminders and preparation tools, participant relationship tracking, and the ability to keep CRM records updated from meeting content. It is designed for professionals and teams who want hands-free note capture and reliable post-meeting follow-up without disrupting the flow of a live conversation. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Callabo is a free tier with paid upgrades (freemium); Sonnet AI is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Callabo | Sonnet AI |
|---|---|---|
| Core capability | Automatic recording and transcription for Google Meet, Teams, Zoom, and Webex | Bot-free recording that captures device audio without joining the call as a participant |
| Standout feature | Paragraph summaries, key discussion points, and timestamped action items | Automatic transcription with AI-generated structured notes |
| Team usage | Automatic meeting-language detection for multilingual meetings | Action item extraction with assignees and deadlines |
| Integrations | AI chat to ask follow-up questions about a meeting | Template gallery for sales, recruiting, legal, medical and other meeting types |
| Languages & capture | Integrations with calendars, CRM, messengers, and project tools | Searchable database of past conversations |
| Best-fit workflow | Enterprise security: permissions, 2FA, IP restrictions, and audit logs | Works across Zoom, Google Meet, Microsoft Teams, Slack and Discord |
Callabo
Choose Callabo if you need turning recurring internal team meetings into shareable summaries and action items — strengths include serves both individual users and enterprise teams.
Sonnet AI
Choose Sonnet AI if you need sales reps capturing call notes and follow-ups without a bot in the room — strengths include no visible bot joins the meeting, which can feel less intrusive to participants.
Callabo
Sonnet AI
It depends on your workflow. Callabo is strong for turning recurring internal team meetings into shareable summaries and action items, while Sonnet AI is strong for sales reps capturing call notes and follow-ups without a bot in the room. Both transcribe and summarize meetings.
Callabo is a free tier with paid upgrades and Sonnet AI is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
You can — some teams pair them when each covers a different part of the meeting workflow.
More head-to-head comparisons involving Callabo and Sonnet AI.
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