Attendee: Open-source, self-hostable meeting bot API that sends bots into Zoom, Google Meet, and Microsoft Teams to capture recordings and transcripts. ColdCALR: AI cold-call roleplay and training tool where reps practice scripts against AI prospects and get scored on technique. Here's where each one pulls ahead on pricing, features, and the meetings it suits best.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Attendee when developers embedding meeting recording and transcription into their own saas products matters most, and ColdCALR when practicing objection handling for specific industries such as real estate or saas 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 cold-call roleplay and training tool where reps practice scripts against AI prospects and get scored on technique.
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
ColdCALR is an AI-powered cold-call training tool that simulates realistic outbound calling scenarios so sales professionals can practice their scripts and objection handling against AI-generated prospects. The AI plays the role of a prospect that raises objections, asks questions, and reacts in a way meant to mirror real conversations, letting reps rehearse repeatedly on demand without scheduling a live partner. After a practice session, ColdCALR provides objective, automated feedback and scoring on cold-calling technique and objection handling, helping reps see where their delivery and responses can improve. The tool includes a script builder for creating and refining cold-calling scripts, an analytics dashboard for tracking progress and appointment-setting metrics over time, and industry-specific templates with prebuilt scenarios for sectors such as real estate, SaaS, insurance, and recruiting. Notably, ColdCALR focuses on practice against AI rather than recording real prospect calls, which the product positions as a way to sidestep dual-consent recording concerns. It is aimed at individual reps, account executives, sales teams, and training directors who want low-pressure, repeatable cold-call practice. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Attendee is a free tier with paid upgrades (freemium); ColdCALR is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Attendee | ColdCALR |
|---|---|---|
| Core capability | Unified REST API for deploying bots to Zoom, Google Meet, and Microsoft Teams | AI roleplay simulations of cold-call conversations with responsive AI prospects |
| Standout feature | Meeting recording and transcript retrieval through API endpoints | Automated scoring and feedback on cold-calling technique and objection handling |
| Team usage | Real-time media pipeline with websocket audio input/output | Script builder for creating and refining cold-call scripts |
| Integrations | Webhooks for event-driven workflows | Analytics dashboard tracking practice progress and appointment-setting metrics |
| Languages & capture | Calendar integration and scheduled-meeting support | Industry-specific scenario templates for real estate, SaaS, insurance, recruiting, and more |
| Best-fit workflow | Single Docker image self-hosting built on Django, PostgreSQL, and Redis | On-demand, around-the-clock practice without a live partner |
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.
ColdCALR
Choose ColdCALR if you need new reps rehearsing cold-call scripts before dialing real prospects — strengths include low-pressure environment for repeatable cold-call practice.
Attendee
ColdCALR
It depends on your workflow. Attendee is strong for developers embedding meeting recording and transcription into their own saas products, while ColdCALR is strong for new reps rehearsing cold-call scripts before dialing real prospects. Both transcribe and summarize meetings.
Attendee is a free tier with paid upgrades and ColdCALR 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.
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