Stellar
No-code AI voice agent that answers calls, qualifies leads, and books appointments 24/7.
Best for service businesses that miss calls after hours. The vertical pre-training and self-learning agents deliver tangible ROI, but watch per-minute overage—heavy users may hit unexpected costs. Not for teams needing omnichannel support or low call volumes.
Verified 4d ago · liveness 76/100 · cite: rightaichoice.com/tools/stellar
- Small home-service businesses (HVAC, plumbing, electrical) needing 24/7 call answering
- Medical and dental offices automating appointment booking and confirmations
- Real estate agents requiring instant lead response and qualification
- Agencies reselling white-label AI voice agents to multiple clients
- Teams requiring human-only customer service with no automation
- Enterprises needing on-premise deployment or custom compliance beyond SOC 2
- Users with under 50 calls per month (pricing may not justify recurring cost)
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Skip Stellar if you require human-only customer service, need omnichannel support (SMS, email, chat) in one platform, have very low call volume (under 50 calls/month), or need enterprise-grade on-prem deployment or custom compliance.
Per-minute overage costs $0.18/min on Growth, $0.14/min on Pro, $0.11/min on Scale—these add up quickly for high-volume callers.
Stellar's pricing fits small-to-mid service businesses that receive 60+ calls per month, starting at $149/mo for 200 minutes. Compared to Smith.ai's Premium hybrid service (typically higher monthly fees with human backup) or Goodcall's budget AI answering (often lower entry), Stellar offers deeper vertical pre-training and more automation features, but per-minute overage can make it pricier for high-volume users.
In short
Stellar — No-code AI voice agent that answers calls, qualifies leads, and books appointments 24/7. Best for Small home-service businesses (HVAC, plumbing, electrical) needing 24/7 call answering, Medical and dental offices automating appointment booking and confirmations, Real estate agents requiring instant lead response and qualification. Plans from $149/mo.
What's new in Stellar
Checked 4 days agoAcross the latest 2 updates: 2 feature updates.
Speed-to-Lead Isn't One Number: How to Measure Response Time by Source
Stellar introduces a method to measure speed-to-lead per lead source, allowing businesses to see which channels respond fastest and optimize accordingly.
How AI Voice Agents Recognize Returning Callers Before They Speak
Explains Stellar's capability to identify returning callers via CRM enrichment, enabling personalized greetings and faster service.
What people actually say about Stellar — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
78 mentions across 5 sources (Hacker News, Product Hunt, App Store, GitHub, Lemmy) · researched Jul 2, 2026.
- +No-code setup in about ten minutes with pre-built industry knowledge.
- +Covers 16 verticals including HVAC, dental, and real estate.
- +Integrates with Google Calendar, HubSpot, and ServiceTitan.
- +Self-learning agents improve from each call automatically.
- +Multi-agent pipelines enable complex, multi-step workflows.
- −No verified user feedback exists—all claims are unproven.
- −Name collision makes finding real reviews nearly impossible.
- −Lack of community support channels reported by any user.
- −Per-minute pricing could become expensive at high call volumes.
- −No mention of uptime or scalability under load in any source.
- • Per-minute overage charges not clearly detailed.
- • Potential costs for warm transfer or multi-agent pipeline usage.
- • Possible setup or onboarding fees for enterprise plans.
Viability Score
How well maintained and how widely used is Stellar? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: August 2026
How we score →Key Features
- No-code AI voice agent builder
- Preloaded industry knowledge for 16 verticals (HVAC, plumbing, dental, etc.)
- Automated lead qualification
- Appointment booking (new, reschedule, cancel, lookup)
- Event confirmation with multi-touch reminder sequences
- Customer support via knowledge base with email follow-ups
- Self-learning agents that improve after every call
- Speed-to-lead analytics (p50/p95 metrics)
- Call quality scoring
- Replay regression testing
- CRM enrichment (greet inbound callers by name)
- Multi-agent pipelines for complex workflows
- Voice widget for website embedding
- TCPA, FCC consent, AI disclosure, warm transfer compliance
- API + webhooks for custom integrations
About Stellar
Stellar is a no-code AI voice agent platform designed for small to medium-sized businesses, especially in home services, healthcare, and professional services. It automates inbound and outbound phone calls, handling lead qualification, appointment booking, event confirmation, and customer support. With a 10-minute setup, you can configure agents via an intuitive builder, connect your calendar and CRM, and launch immediately. Stellar includes preloaded industry knowledge for 16 verticals (e.g., HVAC, plumbing, dental, real estate), self-learning agents that improve after every call, and compliance features (TCPA, FCC consent, AI disclosure). The platform supports four core conversation types: lead qualification, appointment booking (including reschedule/cancel/lookup), event confirmation with multi-touch reminder sequences, and customer support via a knowledge base. Key features include speed-to-lead analytics, call quality scoring, replay regression testing, CRM enrichment (greeting inbound callers by name), multi-agent pipelines for complex workflows, and a voice widget for website embedding. Integrations span Google Calendar, Calendly, HubSpot, ServiceTitan, Housecall Pro, Slack, and more. Pricing is per-minute with overage, scaled across five paid tiers starting at $149/month. Compared to alternatives like Smith.ai or Goodcall, Stellar offers deeper vertical specialization and more automation features, but its overage costs can add up for high-volume users.
Behind the Verdict
Stellar is a purpose-built AI voice agent for service businesses that live and die by the phone. Its 16 verticals (HVAC, plumbing, dental, real estate) mean your agent starts with industry vocabulary and processes, unlike generic assistants. The four conversation types—qualification, booking, confirmation, support—cover the highest-value call flows, and the self-learning loop (with human approval for borderline changes) improves conversion over time. Speed-to-lead under 60 seconds versus a 47-hour industry average is a concrete differentiator for inbound lead capture. Strengths: Preloaded industry knowledge, multi-agent pipelines, compliance baked in (TCPA, consent, disclosure), and a wide integration list including ServiceTitan and Housecall Pro. The 14-day free trial with no credit card lowers evaluation risk. Weaknesses: Per-minute overage costs can surprise high-volume callers—on Growth, overage is $0.18/min, which adds up fast. The free trial is the only free tier; there's no permanent free plan. Omnichannel support (SMS, email, chat) is not part of the platform. For very low call volumes, the $149/mo entry point may outweigh the value. Where it fits: Home-service companies, medical offices, real estate agents, and agencies white-labeling voice agents. Where it doesn't: teams needing human-only service, enterprises requiring on-prem or custom compliance, or businesses under 50 calls a month.
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Real-world workflow fit
Concrete scenarios for the personas Stellar actually fits — and what changes day-one when you adopt it.
An inbound call comes in after hours from a homeowner needing a repair.
Outcome: Stellar answers, qualifies the lead, books a service appointment on Google Calendar, and emails a recap before hanging up—capturing a job that might have gone to a competitor.
A patient calls to reschedule an appointment during lunchtime when the front desk is busy.
Outcome: Stellar handles the reschedule directly in the calendar system, confirms the new time, and updates the CRM, eliminating the need for a call-back and reducing no-shows.
A new lead submits a form on the website outside office hours.
Outcome: Stellar calls the lead within 60 seconds, qualifies them (e.g., budget, timeline), and books a showing on the agent's calendar, increasing conversion before the lead cools off.
Use Cases
- Qualify inbound leads instantly and book appointments on your calendar.
- Send automated reminder calls to reduce no-shows for events and appointments.
- Handle after-hours calls so you never lose a lead when your office is closed.
- Answer repetitive customer support questions from your knowledge base.
- Run multi-step campaigns with a pipeline of agents for lead nurturing.
Limitations
- Free trial is 14 days with no credit card, but after trial all plans are paid.
- Overage minutes cost $0.11-$0.18/min depending on plan.
- API access is available but data retention varies by plan (30 days on Growth, up to unlimited on Scale).
as of 2026-08-19
Verification history
We have re-verified Stellar 6 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Stellar tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Growth
$149/month
Ideal for
Small teams getting started with AI call answering—up to 3 agents and 200 min/month, suitable for businesses with under 100 calls per month.
What this tier adds
Starting tier at $149/mo with 200 included minutes, 3 knowledge bases, and 500 contacts—everything you need to test the ROI.
Pro
$399/month
Ideal for
Growing teams that need visibility and safety at volume—750 min/month, 8 agents, QA scoring, and replay regression testing to ensure changes don't break workflows.
What this tier adds
Adds higher minute allocation (750 vs 200), more agents (8 vs 3), QA scoring, replay regression testing, 5 pipelines, and 120-day recording retention.
Scale
$899/month
Ideal for
Scaling operations needing unlimited contacts, knowledge bases, and pipelines, plus an embeddable call widget for high inbound volume (up to 3,000 min/month).
What this tier adds
Adds 20 agents, unlimited knowledge bases and contacts, embeddable call widget, 90-day speed-to-lead, and unlimited recording retention.
Agency
$999/month
Ideal for
Agencies reselling AI voice agents with pooled minutes across unlimited sub-accounts—ideal for managing multiple clients under one plan.
What this tier adds
Pooled 3,000 minutes, 5 agents per sub-account, unlimited sub-accounts—priced per agency rather than per client.
Agency Pro
$1,999/month
Ideal for
Agencies with high-volume clients needing more minutes and agents per sub-account, with a lower per-minute overage rate.
What this tier adds
Doubles pooled minutes to 6,000, increases agents per sub-account to 10, and lowers overage to $0.10/min.
Where the pricing makes sense
The company stage and team size where Stellar's pricing actually pencils out — and where peers do it cheaper.
Stellar's pricing fits small-to-mid service businesses that receive 60+ calls per month, starting at $149/mo for 200 minutes. Compared to Smith.ai's Premium hybrid service (typically higher monthly fees with human backup) or Goodcall's budget AI answering (often lower entry), Stellar offers deeper vertical pre-training and more automation features, but per-minute overage can make it pricier for high-volume users.
Setup time & first value
How long it actually takes to get something useful out of Stellar — broken out by persona, not the marketing-page minute.
For most users, Stellar can be live in about 10 minutes: create an account, choose your industry vertical, configure the agent's script and knowledge base, connect your calendar and CRM, and launch. You can test with a free trial before committing.
Switching to or from Stellar
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From voicemail/forwarding: Set up Stellar to answer calls directly, replacing your answering service or voicemail, and connect your existing calendar and CRM.
- →From Smith.ai or Goodcall: Export your call scripts and knowledge base to Stellar's builder, connect your calendar and CRM, and switch your phone number. Stellar offers more vertical pre-training but requires adjusting
- ↗To a human answering service: You can redirect your phone number and export your call logs and recordings from Stellar (based on your retention plan) to ensure continuity.
- ↗To an omnichannel platform: If you need SMS, email, and chat, export Stellar's knowledge base and contact list, then import into a platform like Kustomer or Zendesk.
Integrations
Resources & Guides
- Documentationsaystellar.com
Docs · Stellar
Full product docs from saystellar.com
- Resourcesaystellar.com
Resources · Stellar
Helpful link from saystellar.com
- Resourcesaystellar.com
Blog · Stellar
Helpful link from saystellar.com
- Resourcesaystellar.com
Features · Stellar
Helpful link from saystellar.com
- Resourcesaystellar.com
Pricing · Stellar
Helpful link from saystellar.com
- Resourcesaystellar.com
Integrations · Stellar
Helpful link from saystellar.com
- Resourcesaystellar.com
Glossary · Stellar
Helpful link from saystellar.com
Tutorials & Learning
Official links
Tools that pair well with Stellar
Common stack mates teams adopt alongside Stellar, with the specific reason each pairing earns its keep.
Synthflow AI
Enterprise Voice AI platform with in-house telephony, a deployment framework, and ROI in weeks for automated phone calls.
ElevenLabs Conversational AI
Build real-time voice & chat agents with expressive AI in minutes.
Synthflow
Enterprise Voice AI agents with in-house telephony and visual flow builder for high-volume call automation
Featured Head-to-Head Comparisons
Stellar vs Locus Robotics
If you need to automate physical warehouse operations with flexible AMRs, Locus Robotics is the clear choice; its new Locus Array uses Physical AI to reduce labor. If you need to automate phone interactions to book appointments and qualify leads, Stellar is ideal with its no-code builder and vertical-specific knowledge. Choose the tool that matches your operational domain and scale.
Stellar vs Truleo
Truleo and Stellar serve completely different markets: Truleo is a specialized intelligence platform for law enforcement, while Stellar is a no-code voice agent for business sales and support. Choose Truleo if you are a police agency needing to connect siloed data and generate leads from jail calls, body cameras, and RMS. Choose Stellar if you run a small business that needs 24/7 phone answering and appointment booking without coding.
Stellar vs Presto Voice
If you run a multi-location QSR drive-thru chain seeking revenue lift via upselling and automation, Presto Voice is purpose-built for you (now with Dairy Queen adoption). For small to medium service businesses needing a quick, no-code voice agent for lead qualification and booking, Stellar offers easier setup and transparent pricing. Choose based on your venue type and scale.
Alternatives to Stellar
View allSynthflow AI
Enterprise Voice AI platform with in-house telephony, a deployment framework, and ROI in weeks for automated phone calls.
ElevenLabs Conversational AI
Build real-time voice & chat agents with expressive AI in minutes.
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