CallSphere vs PolyAI: AI Voice Agent Comparison 2026
Compare CallSphere’s accessible AI voice and chat platform with PolyAI’s enterprise-focused voice assistant for large contact centers.
How do they compare?
CallSphere
CallSphere is a turnkey AI voice and chat agent platform designed for businesses of all sizes. With transparent pricing starting at $149/mo, live interactive demos, HIPAA compliance, and 57+ language support, CallSphere makes enterprise-grade AI accessible to everyone — from local clinics to Fortune 500 companies.
PolyAI
PolyAI is an enterprise-focused conversational AI company that builds custom voice assistants for large contact centers. They focus exclusively on voice, require a lengthy sales and onboarding process, do not publish pricing, and primarily target large enterprises with high call volumes.
Side-by-side feature breakdown
Where CallSphere pulls ahead
Accessible to All Business Sizes
CallSphere serves businesses of every size with plans starting at $149/mo. PolyAI focuses exclusively on large enterprises, leaving SMBs and mid-market companies without an option. CallSphere brings enterprise-grade AI to businesses that PolyAI won’t serve.
Live Before You Commit
CallSphere deploys in 3–5 days and offers live demos you can try right now. PolyAI’s enterprise sales cycle typically takes 6–12 weeks from initial contact to go-live, with no public demo available to evaluate the product beforehand.
Voice + Chat, Not Voice Only
CallSphere combines voice and chat agents on a single platform with unified analytics and shared context. PolyAI is voice-only, so businesses need additional vendors and integrations to cover chat and messaging channels.
Transparent, Predictable Costs
CallSphere publishes all pricing on its website — no surprises. PolyAI requires contacting sales for a custom quote, making it impossible to evaluate cost without entering a sales process. CallSphere’s approach means you know exactly what you’ll pay before your first conversation.
What will it actually cost?
CallSphere Pricing
Flat monthly plans: Starter ($149/mo), Growth ($499/mo), Scale ($1,499/mo). No annual contracts required. All plans include voice + chat agents, integrations, and support.
PolyAI Pricing
Custom enterprise pricing only. Requires contacting their sales team, going through a discovery process, and negotiating a custom contract. Typically involves annual commitments and five-figure budgets.
Bottom line: PolyAI is designed for enterprises handling millions of calls. For most businesses, CallSphere delivers the same AI voice capabilities at a fraction of the cost, with the added benefit of chat agents included. Businesses can start with the $149/mo Starter plan and scale up as needed.
The Verdict
CallSphere is the clear choice for businesses that want enterprise-grade AI voice and chat agents without the enterprise sales cycle, pricing opacity, or voice-only limitations. PolyAI can be a fit for very large contact centers with dedicated budgets and long implementation timelines, but most businesses will find CallSphere faster to deploy, more affordable, and more versatile.
Skip the Sales Cycle
Try CallSphere’s live AI voice agent demo instantly — no sales call, no contract, no waiting. See exactly what you’re getting before you commit.