Attendee: Open-source, self-hostable meeting bot API that sends bots into Zoom, Google Meet, and Microsoft Teams to capture recordings and transcripts. Substrata: AI sales intelligence platform that analyzes the social and emotional signals behind conversations to help dealmakers read buyer intent. 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 Attendee when developers embedding meeting recording and transcription into their own saas products matters most, and Substrata when coaching sellers on social dynamics in high-stakes conversations matters most. Trial each on a few real meetings before you commit — the better fit usually shows fast.
Open-source, self-hostable meeting bot API that sends bots into Zoom, Google Meet, and Microsoft Teams to capture recordings and transcripts.
AI sales intelligence platform that analyzes the social and emotional signals behind conversations to help dealmakers read buyer intent.
Attendee is an open-source REST API, developed by Attendee Labs, that abstracts the engineering work of building meeting bots into a single developer-friendly interface. Instead of maintaining separate bot stacks for each video platform, developers send one API request and Attendee dispatches a bot that joins a Zoom, Google Meet, or Microsoft Teams call, then returns recordings, transcripts, and real-time media streams. It is built on widely used, battle-tested technologies such as Django, PostgreSQL, and Redis, and is designed to run from a single Docker image so teams can self-host it on their own infrastructure for data residency, compliance, and cost control. The project documents real-time transcription, webhooks, calendar integration, scheduled meetings, and websocket audio input/output. Because it is open source and self-hosted, organizations in regulated industries can keep meeting audio and transcripts inside their own environment rather than routing them through a third-party vendor. The repository is actively maintained with frequent releases, and the project markets itself as a lower-cost alternative to closed-source meeting-bot platforms for developers who want to embed meeting capture and transcription into their own applications. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Substrata is an AI sales coaching and deal intelligence platform that takes a different angle from typical conversation intelligence tools: rather than focusing on transcription and summaries, it analyzes the social and emotional signals beneath sales conversations. Its core function is to model buyer psychology, attitudes, and momentum across interactions to help professional dealmakers understand intent and power dynamics. A central component is SoundWave, a real-time conversational analytics engine that listens to sales calls and analyzes voice tone, pace, pauses, interruptions, and the push-pull of social dynamics, surfacing the why behind what is being said rather than just the words. Substrata applies this signal analysis across conversations and email exchanges to gauge buyer sentiment and engagement, giving sellers and revenue leaders a read on how deals are actually progressing. The platform is aimed at B2B revenue professionals and leaders, and is positioned for smaller and mid-sized dealmaking teams that want behavioral insight into negotiations and high-value conversations. It has been recognized as a high performer across sales coaching, AI sales assistant, conversation intelligence, sales analytics, and revenue operations categories. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Attendee is a free tier with paid upgrades (freemium); Substrata is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Attendee | Substrata |
|---|---|---|
| Core capability | Unified REST API for deploying bots to Zoom, Google Meet, and Microsoft Teams | SoundWave real-time analysis of tone, pace, pauses, and interruptions |
| Standout feature | Meeting recording and transcript retrieval through API endpoints | Behavioral analysis of buyer attitudes, intent, and power dynamics |
| Team usage | Real-time media pipeline with websocket audio input/output | Email signal analysis for sentiment and engagement |
| Integrations | Webhooks for event-driven workflows | Deal momentum tracking across conversations |
| Languages & capture | Calendar integration and scheduled-meeting support | Coaching insights focused on social and emotional cues |
| Best-fit workflow | Single Docker image self-hosting built on Django, PostgreSQL, and Redis | SoundWave real-time analysis of tone, pace, pauses, and interruptions |
Attendee
Choose Attendee if you need developers embedding meeting recording and transcription into their own saas products — strengths include fully open source and designed for convenient self-hosting, keeping meeting data on your own infrastructure.
Substrata
Choose Substrata if you need reading buyer intent and sentiment during negotiations — strengths include analyzes social and emotional subtext beyond plain transcription.
Attendee
Substrata
It depends on your workflow. Attendee is strong for developers embedding meeting recording and transcription into their own saas products, while Substrata is strong for reading buyer intent and sentiment during negotiations. Both transcribe and summarize meetings.
Attendee is a free tier with paid upgrades and Substrata is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Sure. Running both makes sense when their strengths don't overlap and the budget allows.
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