Whissle

The product is a voice-AI platform for building voice agents that answer calls, book appointments, qualify leads and handle support by understanding emotion, intent and context while a person is still speaking. It sells to B2B teams that put voice agents in front of customers — reception and front desk, appointment booking, customer support, lead qualification and clinical intake — and to the developers who build them, including organizations that require self-hosted deployment for privacy and compliance. It is positioned against cloud-only orchestrators that stitch third-party speech-to-text, language models and synthesis, offering its own speech models that extract emotion, intent and entities in one pass and a gateway that can be self-hosted or used as a cloud API.

Key features

• Real-time voice over WebRTC and phone
• Meta-aware ASR in 23 languages
• Single-pass emotion and intent extraction
• Entity, age and gender detection
• Knowledge base with RAG retrieval
• Tools, actions and integrations
• Appointment booking automation
• Transcripts, recordings and analytics
• Embeddable widget
• Self-hostable Docker gateway
• SIP/Twilio phone number support