The AI Voice Agent That Sounds Human

300ms
End-to-end
voice latency (p95)
<120ms
Live interruption
handling
<30 min
Time to first
deployed agent
99%+
Session completion
rate

Beyond Conversation.
It thinks. It acts.

Four stages of intelligence working in perfect harmony, delivering human-like interactions at machine speed.

01 - Perception

Stacle listens with high-fidelity inputs, filtering noise to capture pure intent.

Latency < 200ms|99.9% Recall

02 - Cognition

Deep semantic analysis understands meaning, context, and emotion instantly.

Context Window 128k|Sentiment Analysis

03 - Interaction

Generates natural, adaptive responses indistinguishable from human conversation.

Adaptive Tone|40+ Languages

04 - Execution

Autonomously updates CRMs, schedules meetings, and triggers workflows.

Salesforce|HubSpot|Zapier

How it works

Live in Under 30 Minutes

Three steps between you and an AI agent that sounds human, handles interruptions, and books outcomes.

Step 01

Configure

Define your agent's personality, knowledge base, and business rules. Upload scripts, set guardrails, and pick a voice — all from a single dashboard.

Step 02

Connect

Plug into your existing phone system, CRM, and tools. Native integrations with Twilio, Salesforce, HubSpot, and 30+ more — zero middleware required.

Step 03

Deploy

Go live with real calls and monitor performance in real-time. A/B test scripts, track conversions, and scale from 10 to 10 million calls without re-architecture.

30+ Integrations

Connects to Your Entire Stack

Plug Stacle into the tools you already use. No middleware, no glue code — just native integrations that work on day one.

Reliable. ◇ Scalable. ✳ Secure.

99.99% Uptime

Custom real-time audio infrastructure with enterprise-grade reliability.

Forward-deployed Team

Deployment assistance with a dedicated forward-deployed engineer to go live in a week.

Sub-500ms Latency

Scale up and down to millions of calls in minutes with ultra-low latency interactions.

AI Guardrails

Built-in conversation guardrails prevent model hallucinations and ensure data integrity.

SOC2, HIPAA, & PCI Compliant

Enterprise-level security for healthcare and financial services.