Callabo: Korean AI meeting-notes service from Return Zero that records, transcribes, summarizes, and analyzes meetings for individuals and teams. Sotto: Sotto is a native macOS voice-to-text dictation app that turns speech into text system-wide using local AI transcription models. Which one wins depends on your platform mix, budget, and how hands-off you want notes to be.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Callabo when turning recurring internal team meetings into shareable summaries and action items matters most, and Sotto when privacy-first transcription of imported audio recordings on-device 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.
Sotto is a native macOS voice-to-text dictation app that turns speech into text system-wide using local AI transcription models.
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
Sotto is a native Swift dictation app for macOS 13 and later that converts speech to text in real time. It works as a system-wide push-to-talk layer: the user holds a hotkey, speaks, and Sotto inserts clean text into whatever app is in focus, from Slack and Notion to Xcode and email fields. Audio is transcribed by local engines, including OpenAI Whisper models (Tiny through Large V3 Turbo and Distil Large V3) and NVIDIA Parakeet v2/v3, so by default recordings never leave the Mac; users can optionally connect cloud providers such as OpenAI or Groq with their own API keys for added accuracy. Beyond live dictation, it can import and re-transcribe audio files, supports 90+ languages, keeps a searchable history of recordings with timestamps, and offers a custom vocabulary dictionary. One-click AI processing can rewrite, summarize, translate, or reformat dictated text. It is aimed at developers, writers, and privacy-conscious professionals who want fast, local voice input rather than a cloud meeting-bot service.
Best suited for
Callabo is a free tier with paid upgrades (freemium); Sotto is a free tier with paid upgrades (paid). Always confirm current pricing on each vendor's site before buying.
| Feature | Callabo | Sotto |
|---|---|---|
| Core capability | Automatic recording and transcription for Google Meet, Teams, Zoom, and Webex | System-wide push-to-talk dictation that inserts text into any app |
| Standout feature | Paragraph summaries, key discussion points, and timestamped action items | Local on-device transcription via Whisper and NVIDIA Parakeet models |
| Team usage | Automatic meeting-language detection for multilingual meetings | Audio file import and re-transcription with searchable, timestamped history |
| Integrations | AI chat to ask follow-up questions about a meeting | Support for 90+ languages with per-language hotkeys |
| Languages & capture | Integrations with calendars, CRM, messengers, and project tools | One-click AI processing to summarize, translate, or rewrite dictated text |
| Best-fit workflow | Enterprise security: permissions, 2FA, IP restrictions, and audit logs | Optional cloud transcription via user-supplied OpenAI or Groq API keys |
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.
Sotto
Choose Sotto if you need hands-free dictation of emails, messages, and documents across mac apps — strengths include local processing keeps audio on-device for strong privacy.
Callabo
Sotto
It depends on your workflow. Callabo is strong for turning recurring internal team meetings into shareable summaries and action items, while Sotto is strong for hands-free dictation of emails, messages, and documents across mac apps. Both transcribe and summarize meetings.
Callabo is a free tier with paid upgrades and Sotto is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Often yes: teams combine tools when one handles capture and another handles analysis.
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