Voice AI's default brain is retiring. Resonance is training the successor.

Since 2024, every frontier lab optimized for coding and regressed on conversation. Now GPT 4.1 starts retiring in October, with no equivalent successor. Resonance is building for the missing layer: the 80% of shared intelligence every voice agent needs, so builders can focus on the 20% that wins their market.

Get early access Q4 cohort: 8 of 12 seats filled
The model we're training
Fast
Sub-500ms real-time intelligence.
Reasoning to drive resolution
Skills universal to the domain and role to get the job done.
Conversationally fluent
Built for messy spoken turns, not perfect chat turns.

With every learning from our ex-Hippocratic and ex-Assort team, trained into our system.

From building the intelligence behind
300M+
Interactions
1,000+
Agents across 9 healthcare verticals
3-day
Go-lives with enterprise clients

We become your R&D lab

Early Access partners get a dedicated research team: tell us what you're building today that the model should already know. Let's build the future of voice AI together.

What partners get
01
Model & API Research Preview
Run your hardest calls on the model pre-release. Your long-tail failure cases set our bar to ship.
02
Co-define Benchmarks
Help write the public standard for conversational quality.
03
1:1 Consultations with our Research Team
Focused sessions applying what we've learned to scaling voice agents to help your systems.
No binding contract Letter of Intent-based Free during Early Access By Invitation
Join the Early Access Partnership Program Q4 cohort: 8 of 12 seats filled
Call volume / month optional
Base model your stack is mostly built on optional

Received.

We read every request and reply personally, usually within a few days. If it's a fit, the next note you get is an invitation.