Product
Voice
A better customer experience is calling.
Natural and effective
Delight your customers across inbound and outbound calls.
Enable better, more human conversations
Deliver low-latency voice interactions that handle interruptions, background noise, accents, and detect customer sentiment in real-time to adapt tone and pace while remaining calm and helpful.
Resolve questions instantly and accurately
Replace rigid IVR menus with an empathetic voice agent that understands customer context, leverages memory for personalized experiences, and delivers accurate, real-time resolutions while representing your brand.
Speak in over 55 languages
Produce fast, accurate support with native-level fluency and seamless mid-conversation language switching.
Enterprise-ready
Designed for teams who require reliability, adaptability, and complete control.
Build, test, deploy, and optimize
Build agents with Ghostwriter, validate with voice simulations across real-world edge cases, deploy across all channels, and continuously optimize with AI-driven insights.
Orchestrate with best-in-class models
Every turn is routed to the optimal model—maximizing speed, accuracy, and response quality in the right language and tone.
Escalate seamlessly to support teams
When a human touch is required, transition conversations to care representatives with full context and history.
Voice payments
Collect card and ACH payments entirely over the phone with no IVR handoff.
One continuous conversation
From payment request to confirmation, everything happens in a single, uninterrupted call.
Secure by design
Card details are collected via DTMF tones through Level 1 PCI compliant infrastructure, and routed directly to your payment processor.
Easy to integrate
Voice payments connect to your existing payment processor with a standard integration.
Trusted in real customer conversations
Industry leaders are reimagining their customer experience with voice.
Discover what Sierra can do for you
Find out how Sierra can help your business build better, more human customer experiences with AI.


