Visca

The full-stack
runtime for
human-like AI.

Deploy AI that can see, listen, speak, appear and act—on your infrastructure or ours, using open-weight models or licensed providers.

Live session00:03:24

Intelligence

Routing

Hearing

Listening

Voice

Speaking

Presence

On screen

Action

Executing

A human-like AI presence in a live professional conversation
SpeakingREALTIME

Built for control

One runtime. Five human-like capabilities.

Visca unifies the models, tools and interfaces required to deliver human-like AI—securely and reliably.

One runtime. Every layer of presence.

Visca coordinates the complete path from human input to intelligent action without locking the application to one model or deployment.

Human input● Live
Human input to the Visca runtime
Audio in● 48 kHz
Visca runtime

Intelligence

Routing

Understands intent and routes to the best path.

Hearing

Listening

Transcribes speech with noise and context handling.

Voice

Generating

Generates natural speech with tone, timing and safety.

Presence

Streaming

Renders avatar and syncs lip, face and tone in real time.

Action

Executing

Executes tools and workflows to get results done.

Completed action● Live

Task completedCalendar event created

Live visual response● Live
Live visual response
Audio out● 24 kHz
Model choice Visca-verified open-weight Licensed providerDeployment Visca Cloud Private cloud On-premises
Runtime guarantees

Interruption handling

Detects barge-ins and immediately pauses output, preserving context and continuing the conversation.

Active

Identity ownership

Your identities, data and policies stay yours. Visca enforces access, consent and retention end to end.

Enforced

Provider fallback

Automatically retries across providers or deployments to maintain continuity without user impact.

Standby
Full trace Live session timeline → Model & provider path → Tool execution log →
Live Active Standby Completed Paused Realtime End-to-end encrypted Policy enforced Region: Your choice

Access is temporary.
Infrastructure endures.

The temporary suspension of Fable was our wake-up call: critical AI cannot depend on access that another organization can withdraw.

Provider-dependent application

UserVoiceIdentityToolsRecord
×

Policy changeAccess withdrawn.
Session ends.

Visca runtime

UserVoiceIdentityToolsRecord
Licensed modelUse the best
intelligence available.
······→
Open-weight fallbackRetain the ability to
operate without it.

✓   Session, identity, voice, presence, tools, and record continue.

Use the best intelligence available.
Retain the ability to operate without it.

Models

You decide which models to use, when to use them, and what runs in fallback.

Voices

Your voices, styles, and prompts live in your environment and travel with your runtime.

Identities

Your users, roles, and policies remain under your control, end-to-end.

Infrastructure

Your data, sessions, and logs reside in your infrastructure by design.

Read the sovereignty thesis

Installed where the work and data already live.

Models, voices, institutional data, credentials, and operational records can remain inside the network. The same governed runtime can operate in a health system, a bank, a public institution, or a fully air-gapped boundary.

Explore institutional deployments
Visca runtimes installed inside healthcare, financial, and public-sector networks

First deployment underway
at Stanford Medicine.

Visca is being deployed where practitioners will use human-like AI inside a real institutional environment.

01

Integration

Connected to EHR and clinical systems

02

Pilot

Limited rollout with practitioner champions

03

Evaluation

Safety, reliability, and usability review

04

Deployment

Expanding to more care teams

Give intelligence a presence—
and keep it under your control.