Free: official Dessa recordings breakdown, Mac M4 Max checker, and BYOK mode. Instant Voice Pass: $4.90 one-time for 150 credits (15 minutes). Pro Studio: $12.90/month for 1,200 credits (120 minutes).
Key features
Live voice conversation with realistic AI character
Real-time character responses that read tone, pace, and hesitation
Reflective debrief with specific feedback and one thing to try next time
Custom framework integration
Team practice spaces with shared scenario library
Browser-based, no installation required
EU-based data processing with encryption and 30-day deletion
English and French language support
Official Dessa audio recordings with two-track synchronized playback
Mac M4 Max hardware readiness checker for local deployment
Bring-your-own-key mode with OpenAI API integration
Session audio and transcript download
Real-time voice AI with 6-second credit metering
Model comparison table for Dessa vs Sesame vs GPT-Live-1 vs Moshi
Microphone preview mode for testing audio input
Multiple conversation scenarios for voice practice
What makes it different
Practice with zero real-world cost before high-stakes conversations
Consistent training across teams on the same scenarios
Builds instinct through realistic repetition rather than theory
Realistic voice simulations that respond like real counterparts
Measurable improvement tracking across individuals and teams
Independent platform with no affiliation to Block, Inc., providing free access to official Dessa recordings
Only source showcasing Block's full-duplex Dessa model with official two-track demonstrations
Free M4 Max hardware checker to estimate Dessa's local deployment compatibility
Zero-text speech-to-speech architecture with no text intermediary
Harco
DessaVoice