The AI voice agent
callers can't tell apart
Most AI calling tools sound robotic and require engineers to set up. Stellar sounds remarkably human out of the box — with no-code setup, built-in templates, and honest per-minute pricing.
Pay per minute, not per seat
Flat base fee plus per-minute billing for natural-sounding conversations. No seat licenses, no minimums, no hidden overages.
Live in under 30 minutes
Three production-ready templates with natural-sounding voices. Pick one, customize the tone and knowledge, deploy a human-like agent.
Built for ops teams, not developers
No engineering required. Stellar's no-code builder handles everything from voice personality to calendar integrations. Your team deploys human-sounding agents without writing a line of code.
Feature-by-feature breakdown
Based on publicly available pricing pages and documentation as of early 2025.
| Feature | Stellar | Bland.ai | Synthflow | Air.ai |
|---|---|---|---|---|
| Pricing | ||||
| Transparent per-minute pricing | – | – | ||
| No seat license required | – | – | ||
| No platform fee (free tier) | – | – | ||
| Starter plan under $100/mo | – | – | ||
| Annual discount available | – | – | – | |
| Setup & ease of use | ||||
| No-code agent builder | – | – | ||
| Built-in call templates | – | – | – | |
| Live in under 30 minutes | – | – | – | |
| Developer API available | Pro+ | – | ||
| White-label support | Scale | – | – | |
| Voice & calling | ||||
| Outbound + inbound calls | ||||
| Knowledge base per agent | – | – | ||
| Google Calendar booking | – | – | – | |
| Multi-touch follow-up campaigns | – | – | – | |
| CSV batch upload & triggers | ||||
| Call recording & transcripts | ||||
| Searchable transcripts | – | – | – | |
| Custom voice tuning | Scale | – | – | |
| Embeddable call widget | Scale | – | – | – |
| Integrations | ||||
| Webhook triggers | ||||
| Slack notifications | Pro+ | – | – | – |
| CRM integrations (native) | – | – | ||
| Zapier / Make support | – | |||
| Custom API webhooks | Pro+ | – | ||
| Analytics & compliance | ||||
| Real-time call dashboard | – | – | ||
| Call outcome analytics | – | |||
| TCPA compliance tools | – | – | – | |
| GDPR data retention | – | – | – | |
| Contact CRM (auto-capture) | – | – | – | |
| Post-call automation rules | – | – | – | |
| Weekly AI performance digest | Pro+ | – | – | – |
| Support | ||||
| Email support | ||||
| Priority support | Pro+ | Enterprise | Pro+ | |
| Dedicated onboarding | – | – | – | |
Competitor information sourced from public documentation and pricing pages. Last reviewed Q1 2025.
How Stellar compares, one-on-one
Bland.ai is a developer-first API for building voice agents. Powerful if you have engineers, but the out-of-the-box voice quality and conversational flow don't match what non-technical teams need for human-sounding calls.
Stellar's no-code builder gets you live in 30 minutes with a natural-sounding agent. No API keys, no webhooks, no custom code.
Bland requires API integration and custom code for every workflow. Building a basic qualification call means writing and maintaining code.
Stellar ships 3 production-ready templates for lead qualification, appointment booking, and event confirmation. Customize and deploy.
Bland has no built-in call workflow templates. Every conversation flow is built from scratch via their API.
Stellar books directly into Google Calendar during the call. Your AI agent checks availability and confirms the slot in real time.
Bland has no native calendar integration. You'd need to build a custom tool handler and connect your own calendar API.
Transparent pricing, always
We publish every price. No sales calls required.
| Stellar | Bland.ai | Synthflow | Air.ai |
|---|---|---|---|
From $59/mo $0.16–$0.22/min | From $0/mo $0.07–$0.14/min | Custom pricing Not published | Custom pricing Not published |
| Pay-as-you-go | Usage-based API | Seat-based tiers | Enterprise contracts |
| No minimums | ·Requires engineering | ·Annual contracts | ·Minimum commitment |
| No contracts | ·No templates | ·Custom quotes | ·Requires onboarding |
| Public pricing | ·No no-code builder | ·Higher per-min rates | ·Weeks to deploy |
| Free plan available | ·Developer-only | ·Agency-focused | ·Not self-serve |
Built for teams that need callers to trust the voice
Stellar isn't for everyone, and that's by design.
SMBs with 1–50 employees
You need a voice agent that sounds like a real employee — deployed in minutes, not months. No engineering team required.
Sales & ops teams
Your reps should be closing, not dialing. Stellar handles the first touch with a voice so natural, leads engage like they're talking to your team.
Healthcare & professional services
Patient scheduling, client intake, and appointment reminders — handled by a voice patients trust and callers enjoy talking to.
Agencies managing multiple clients
Deploy human-sounding AI agents across client accounts. Each client gets their own voice, branding, and phone number. Built-in margins included.
Switching to
Stellar
Common questions about migrating from another platform or getting started.
Hear the difference yourself
Deploy a human-sounding AI agent in under 30 minutes. Free to start, no credit card required.