COMPETITOR COMPARISONLooking for an alternative to Sierra?
Sierra is built to become your new agent OS. Callers.ai is built to make your current stack better, integrating with your CCaaS, CRM, and telephony to deliver voice AI outcomes without a multi-quarter migration.
Trusted by revenue teams running at scale
Why teams switchWhat Sierra means for your current stack
Sierra is an impressive platform, if you're ready to rebuild your customer operations from scratch. Most teams aren't.
Sierra wants to replace your stack, not join it
Sierra is designed as a standalone Agent OS, the system of record for all customer conversations. That means rethinking your CCaaS, your CRM integrations, and your telephony. Callers.ai plugs into what you already have and starts delivering outcomes in weeks.
Multi-quarter implementation vs. weeks to live
Sierra's enterprise deployment model involves professional services, custom configuration, and extended rollouts. Callers.ai customers go from signed contract to live campaigns with a dedicated CSM in weeks, not quarters.
Pricing tied to outcomes you do not control
Sierra's pricing is outcome-based, tied to resolved conversations, saved cancellations, and completed transactions. You only know the cost once the calls are running. Callers.ai pricing is transparent and predictable from day one.
Why Callers.aiBuilt for teams that run on volume
A conversational AI platform that integrates with your existing stack, goes live in weeks, and gives your CX team full control, without replacing anything.
Keep your CCaaS, CRM, and telephony.
Callers.ai slots into your existing stack via 610+ native integrations. No rip-and-replace, no migration project.
Live in weeks, not quarters.
A dedicated CSM sets up and manages your campaigns with you. No implementation deck, no professional services engagement.
Your team owns it.
No-code visual builder means your CX and marketing teams can launch and optimize campaigns without engineering involvement.
Post-call analysis on every call.
AI-generated summaries, lead-status flags, and step-level script performance in the UI. No consultant required.
HIPAA and SOC 2 certified, included.
Not an enterprise add-on. Every paid plan is covered.
Callers.ai vs. the alternative
Customer storiesRevenue teams that switched chose Callers.ai
★★★★★
"Callers cut our call center load by 65% and 10X our outreach with significantly better results."
Justin Kahn
Head of Digital Innovation
★★★★★
"We were up and running faster than expected and started seeing measurable results within the first week."
Chelsea Thompson
Director of Operations
★★★★★
"Callers reduced outbound time by 46% and accelerated inbound demand leading us to expand our sales team."
Rob Stevenson
Vice President
Sierra makes you migrate. Callers.ai makes you ship.
Add voice AI to your existing stack in weeks, without rebuilding your customer operations.