If you're a small business owner losing revenue to missed calls and after-hours voicemails, finding an AI receptionist that fits your budget is critical. CallOS is a growing name in AI-powered call handling — but its quote-based pricing makes it hard to compare costs before speaking with sales.
Whether you need to automate inbound calls for your HVAC company, reduce missed leads at your law firm, or provide 24/7 answering for your growing service business, understanding what you'll actually pay is the first step toward the right decision.
In this post, we'll break down everything we know about CallOS pricing, how it compares to competitors with publicly listed plans, and what factors affect your total cost — so you can evaluate your options with confidence.
Note- All pricing sourced from provider websites.
CallOS positions itself as an AI receptionist and virtual phone assistant for businesses that need 24/7 automated call answering, appointment booking, and lead qualification. The platform is particularly popular among service-based businesses like HVAC contractors, where missed calls directly translate to lost revenue.
However, like many AI receptionist providers targeting mid-market and enterprise customers, CallOS does not publicly list pricing on its website. To get specific cost information, you need to contact their sales team for a custom quote.
This approach means your CallOS pricing will likely depend on factors such as:
Important distinction: CallOS and the alternatives in this guide are AI receptionist platforms designed for automated call answering — not full call center solutions, IVR phone trees, or basic voicemail services. These tools use natural language processing to have real conversations with callers, book appointments, and qualify leads.
‘Not sure what to look for in an AI receptionist for your business? Our guide covers the key features and considerations.
Get transparent AI receptionist pricing without the guesswork
See exactly what you'll pay before you commit. Welco offers clear, published pricing with plans starting at $39/month.
Since CallOS doesn't share exact pricing publicly, estimating costs requires looking at industry benchmarks and what comparable providers charge. Here's what we know about the factors that influence CallOS pricing.
When contacting CallOS for a quote, it's important to get clarity on the full cost picture. Consider asking about:
Without publicly available pricing, comparing CallOS to other providers requires looking at competitors that do publish their rates. That's exactly what we'll cover next.
To understand where CallOS likely fits in the market, it helps to compare pricing across AI receptionist providers that publicly share their plans. Below is a snapshot of the current pricing landscape.
| Provider | Starting Price | Included | Overage | Free Trial | Best For |
|---|---|---|---|---|---|
| CallOS | Contact sales | Contact sales | Contact sales | Contact sales | Service businesses, HVAC |
| Welco | $39/mo | 60–300 min | Contact vendor | 7-day | SMBs, growing businesses |
| Dialzara | $29/mo | 60–500 min | $0.48/min | 7-day | Low volume, testing |
| Smith.ai (AI) | $95/mo | 50+ calls | $1.90–$2.40/call | 30-day MBG | Professional services |
| My AI Front Desk | $99/mo | 200–300 min | $0.12/min | No | Small teams |
| RingCentral AI | $59/mo | 100 min | $0.50/min | Yes | Existing RingCentral users |
| Rosie AI | $49/mo | Unlimited min | None | 7-day | High volume, bilingual |
All prices in USD. Pricing may vary by region — contact providers directly for localized pricing or currency options.
Note: Welco monthly starter plan starts at $39. Smith.ai monthly self-service plans start at $95/mo with $1.90–$2.40/call rates. Annual plans start at $500/mo with $1.20–$1.50/call rates and no overages. Front Desk monthly pricing is $99–$149/mo; annual billing reduces to $79–$119/mo. All figures sourced from provider websites as of early 2026.
Each provider uses a different pricing model, and the best value depends on your specific call volume and feature requirements. Let's look at how these models work.
For a deeper look at how AI phone answering systems compare across features and pricing, see our detailed breakdown.
Customer sentiment matters just as much as pricing when choosing an AI receptionist. Here's what users are saying:
Welco users frequently praise the platform's fast setup and transparent pricing. Alex Smith, Owner of PulseFit Gym, shared: "Welco answers every call — even when our gym's packed with members and trainers. Prospects no longer slip through the cracks, and I've seen a clear uptick in new memberships since we started."
Zain Brown, Project Manager at Apex Contractors, noted that before Welco, calls from subcontractors and new construction leads would fall through the cracks during busy overlaps: "Now, everything's automatically logged, routed, and documented — no more missed info or scattered call notes."
CallOS is known for strong industry-specific solutions, particularly in the HVAC and home services space, where users value its deep integration with tools like ServiceTitan.
Smith.ai appeals to professional services firms that want AI plus human backup for complex calls. Dialzara attracts solopreneurs testing AI receptionists for the first time with its low $29/month entry point.
Understanding how AI receptionists charge for their services is just as important as comparing sticker prices. The pricing model you choose directly affects your monthly costs, especially as call volume fluctuates.
| Model | How It Works | Providers | Best For |
|---|---|---|---|
| Flat-rate / Subscription | Fixed monthly fee with included minutes | Welco ($39–$149/mo), Rosie ($49–$299/mo) | Budget predictability, growing businesses |
| Per-minute | Base fee + charge per minute of usage | Dialzara ($0.48/min overage), My AI Front Desk ($0.12/min overage), RingCentral ($0.50/min overage) | Low volume with predictable call patterns |
| Per-call | Charge per call handled regardless of duration | Smith.ai ($1.20–$2.40/call) | Businesses with longer consultation-style calls |
| Custom / Quote-based | Pricing tailored to business needs | Complex requirements, high volume | Complex requirements, high volume |
Per-minute plans can advertise attractive starting prices, but costs increase as usage grows. For example, Dialzara's $29/month plan includes 60 minutes. If your business uses 150 minutes in a month (roughly 50 calls at 3 minutes each), the overage of 90 minutes at $0.48/min adds $43.20, bringing the actual cost to $72.20 — nearly 2.5x the advertised price.
Smith.ai's per-call model charges $1.90–$2.40 per call on monthly self-service plans. At 100 calls/month on the lowest monthly tier ($95/mo for 50 calls), the additional 50 calls at $2.40 each add $120, totaling $215/month. Annual plans reduce these per-call rates significantly ($1.20–$1.50/call) and eliminate overages, but require upfront commitment starting at $500/month.
Businesses using an AI receptionist often pair it with a CRM like HubSpot or Salesforce, scheduling tools like Calendly or Google Calendar, and workflow automation platforms like Zapier for end-to-end call-to-booking automation.
The advertised subscription price rarely tells the full story. When evaluating CallOS or any AI receptionist, consider these additional cost factors that affect your actual monthly spend.
| Cost Factor | Welco | Dialzara | Smith.ai (AI) | My AI Front Desk | |
|---|---|---|---|---|---|
| Setup Fee | $0 | $0 | $0(self-serve) | $0 | $0 |
| Overage Rate | Contact vendor | $0.48/min | $1.90–$2.40/call | $0.12/min | $0.50/min |
| Setup Time | Under 5 min | 15–30 min | 48 hours (guided) | Under 5 min | Minutes |
| Contract | Month-to-month | Month-to-month | Monthly or annual | Monthly or annual | Monthly |
| Free Trial | 7 days | 7 days | 30-day MBG | No | Yes |
Key cost considerations:
Want to calculate whether an AI receptionist makes financial sense for your business? Try our AI receptionist ROI calculator to estimate your potential savings.
CallOS offers strong capabilities for service-based businesses, but its quote-based pricing makes it difficult to evaluate costs upfront. Here's a comparison of CallOS alongside five alternatives to help you find the right fit.
| Alternative | Ideal For | Free Trial | Pricing | Key Differentiator |
|---|---|---|---|---|
| Welco | SMBs and growing businesses | 7-day | $39–$149/mo | Transparent pricing, fast setup, 8,000+ integrations |
| Dialzara | Low volume, solopreneurs | 7-day | $29–$199/mo | Lowest entry price, simple setup |
| Smith.ai | Professional services, legal | $95–$2,000/mo | $95–$2,000/mo | Hybrid AI + live agent backup |
| My AI Front Desk | Small teams, basic automation | No | $99–$149/mo | Quick setup, affordable mid-range |
| RingCentral AI | Existing RingCentral users | Yes | $59–$69/mo | Bundled with business phone system |
| Rosie AI | High volume, bilingual needs | 7-day | $49–$299/mo | Unlimited minutes on all plans |
Need predictable AI receptionist pricing?
Optimize costs without sacrificing features. Explore an alternative that aligns with your budget and business needs.
Welco strikes a balance between affordability and functionality, making it a practical solution for businesses that want to automate call handling without navigating complex or unpredictable pricing structures.
Unlike providers with quote-based pricing, Welco publishes its plans upfront, so you know exactly what you'll pay before signing up. Here's what each plan includes:
| Plan | Price | Included Minutes | Free Trial | Ideal Use Case |
|---|---|---|---|---|
| Starter | $39/mo | 60 minutes | 7 days | Never miss occasional calls |
| Professional | $99/mo | 100 minutes | 7 days | Handle daily inbound calls with CRM integrations |
| Business | $149/mo | 300 minutes | 7 days | Consistent volume with workflows, intake forms, and call transfer |
All plans are month-to-month with no long-term contracts. Cancel anytime with no penalty.
Here's how Welco's features can streamline your call handling while keeping costs transparent.
| No | Aspect | Description | Benefit |
|---|---|---|---|
| 1 | Transparent Pricing | Published plans from $39–$149/mo with clear feature tiers. | Know your costs upfront; no surprises after a sales call. |
| 2 | Fast Setup | AI receptionist configured and live in under 5 minutes. | Faster deployment means faster ROI. Start capturing calls the same day. |
| 3 | 24/7 AI Call Answering | Round-the-clock call handling with natural language processing. | Never miss leads from after-hours or overflow calls. |
| 4 | Workflow Automation | Custom call workflows, intake forms, and call transfer/escalation. | Automate routine call handling; route complex calls to your team. |
| 5 | Integrations | Connects with 8,000+ apps via Zapier, plus native CRM and calendar integrations. | Fits into your existing tech stack without custom development. |
| 6 | Call Intelligence | Call recordings, transcripts, and analytics on all Professional and Business plans. | Track call quality and gain insights to improve customer experience. |
| 7 | Scalable Plans | Upgrade or downgrade anytime with no penalties. Enterprise tier available for high volume. | Grows with your business without requiring a platform switch. |
See how Welco handles real customer calls in our AI receptionist demo walkthrough.
CallOS does not publicly list pricing on its website. You need to contact their sales team for a custom quote. This approach is common among AI receptionist providers targeting mid-market and enterprise customers with variable needs and industry-specific requirements.