Callengo vs Vapi
Business platform vs. developer API
Vapi advertises $0.05 per minute. The real cost, once you add speech-to-text, an LLM, and a text-to-speech provider, runs $0.30 to $0.33 per minute. Callengo's overage rate covers everything from $0.17 to $0.29 per minute, with three pre-built outbound agents, no developer required, and HIPAA included. This guide breaks down the real differences.
Setup time
Callengo
< 15 min
Vapi
4 to 6 weeks
Effective cost/min
Callengo
$0.17–$0.29
Vapi
$0.30–$0.33
Outbound templates
Callengo
3 agents
Vapi
None
Full comparison: pricing, features, integrations, and use cases
What you're actually comparing
Vapi is a voice infrastructure API with a modular architecture. You bring your own speech-to-text provider, your own LLM, and your own text-to-speech provider, then use Vapi's transport layer to connect them into a working voice agent. The advertised $0.05/min covers that transport layer only. The actual cost of running a call also includes what you pay each vendor separately.
Vapi supports 100+ languages, sub-200ms latency with Cartesia, multi-agent squads for complex workflows, and handles 400,000+ daily calls at enterprise scale. It is a genuinely capable platform for engineering teams building custom voice products. Getting to production takes 4 to 6 weeks and requires developers who know voice APIs.
Callengo is built for the opposite buyer. If your team doesn't have developers available, or you simply want to automate outbound calls without building the infrastructure from scratch, Callengo gives you three ready-to-use agents: Lead Qualification, Appointment Confirmation, and Data Validation. You connect your CRM, upload contacts, and launch.
Pricing is a flat monthly fee with a single overage rate. HIPAA compliance is included. CRM integrations are native, not webhook-dependent. And there are no vendor fees to track.
Vapi is best for
- Developer-led engineering teams
- Custom multilingual voice apps
- BYOM / BYOS / BYOT architectures
- Ultra-low latency requirements
Callengo is best for
- Sales and ops teams, no devs needed
- Healthcare, legal, real estate
- Predictable all-in pricing
- CRM-connected outbound automation
Zero developer time, three outbound agents ready to launch. Try Callengo free.
Start free trialVapi's $0.05/min: what the number hides
Vapi's advertised rate only covers the voice transport. Real costs add up quickly once you factor in the vendors you're required to connect.
Callengo Plans
Flat monthly, single all-in overage rate
| Plan | Price | Minutes | Overage |
|---|---|---|---|
| Free | $0 | 15 (one-time) | Blocked |
| Starter | $99/mo | 300 | $0.29/min |
| Growth | $179/mo | 600 | $0.26/min |
| Business | $299/mo | 1,200 | $0.23/min |
| Teams | $649/mo | 2,250 | $0.20/min |
| Enterprise | $1,499/mo | 6,000 | $0.17/min |
All-in pricing · HIPAA included · No vendor fees to manage · 12% off with annual billing
Vapi Real Cost Breakdown
Per-minute with typical vendor stack
| Component | Cost/min | Billed by |
|---|---|---|
| Vapi transport | $0.05/min | Base rate only |
| Speech-to-text (e.g. Deepgram) | $0.01–$0.04/min | Paid separately |
| LLM (e.g. GPT-4o) | $0.10–$0.15/min | Paid separately |
| Text-to-speech (e.g. ElevenLabs) | $0.10–$0.12/min | Paid separately |
| Total effective cost | $0.30–$0.33/min | With typical vendors |
Plus: HIPAA costs $1,000/month extra · Concurrency limited to 10 on standard plans
The $0.05/min rate is not what you pay
Vapi's pricing page shows $0.05/min, but that only covers Vapi's own transport layer. To run a call, you also need a speech-to-text provider (Deepgram, Assembly AI, or similar), an LLM (GPT-4o, Claude, Gemini), and a text-to-speech provider (ElevenLabs, Azure, Cartesia). Each of those is billed separately by the vendor.
With a common stack using GPT-4o and ElevenLabs, the effective all-in rate runs $0.30 to $0.33 per minute. That's actually higher than Callengo's Business plan overage of $0.23/min, which includes everything with no vendor accounts to manage.
If your team needs HIPAA compliance, add another $1,000 per month on top of that. Callengo includes HIPAA at no extra cost.
Callengo includes everything: HIPAA, CRM sync, follow-up automation, and all-in per-minute pricing.
Compare plansCallengo vs Vapi: feature by feature
| Feature | Callengo | Vapi |
|---|---|---|
| Setup time | Under 15 minutes | 4 to 6 weeks (developer required) |
| Technical expertise required | None | Developer required |
| Pre-built outbound templates | 3 vertical agents | None (4 inbound-only templates) |
| Lead Qualification Agent | BANT scoring included | Custom build required |
| Appointment Confirmation Agent | Full logic included | Custom build required |
| Data Validation Agent | CRM writes included | Custom build required |
| Follow-up automation | Up to unlimited, by plan | Custom code required |
| No-show auto-retry | Yes (Growth and above) | Custom code required |
| Voicemail detection | Smart detection (Starter+) | Basic, via webhook |
| Calendar sync | Google, Outlook, Zoom, SimplyBook.me | Google Calendar via webhook |
| HubSpot integration | Native (Business+) | Via Zapier or webhook |
| Salesforce integration | Native (Teams+) | Via Zapier or webhook |
| Pipedrive integration | Native (Business+) | Not native |
| Clio integration (legal) | Native (Business+) | Not available |
| Base per-minute cost | $0.17 to $0.29/min (all-in) | $0.05/min + separate STT, LLM, TTS |
| Effective per-minute cost | $0.17 to $0.29/min flat | $0.30 to $0.33/min with vendors |
| HIPAA compliance | Included | $1,000/month add-on |
| Vendor management | None required | Manage STT, LLM, TTS separately |
| Free tier | 15 min free, always | $10 credit (one-time) |
| Language support | English (US, UK, AU) | 100+ languages |
| Concurrency | 1 to unlimited, by plan | 10 calls (Enterprise for unlimited) |
| SOC 2 certified | Yes | Yes |
| Live call transfer to human | Yes | Yes |
| Multi-agent workflows | Campaign-level automation | Multi-agent squads (developer config) |
| Voice providers | 4 curated voices | 9+ providers (ElevenLabs, Azure, etc.) |
| Dedicated support | Email and onboarding on paid plans | Discord and email on paid plans |
| Daily volume cap | None | 10 concurrent (Enterprise for more) |
Where Vapi genuinely excels
Vapi's modular architecture is its greatest strength. By letting you bring your own STT, LLM, and TTS providers, Vapi gives engineering teams the flexibility to choose exactly the right model for each component of a call. Want sub-200ms latency? Use Cartesia for TTS. Need GPT-4o for complex reasoning? Plug it in. Need Deepgram for accurate transcription in a noisy environment? Done.
Language support is another genuine advantage. Vapi supports 100+ languages with automatic detection, which makes it a strong fit for multinational businesses or products that serve non-English-speaking markets. This is not a capability Callengo currently matches on standard plans.
At enterprise scale, Vapi handles 400,000+ daily calls with 99.99% uptime and SOC 2 / GDPR certification. Multi-agent squad configurations let engineering teams build sophisticated routing logic where multiple AI agents hand off calls or work in parallel. For complex, custom voice applications at scale, Vapi's infrastructure is battle-tested.
100+ languages
Automatic language detection across global markets
9+ voice providers
ElevenLabs, Azure, Cartesia, OpenAI, and more
BYOM / BYOS / BYOT
Bring your own model, STT, and telephony
Multi-agent squads
Multiple AI agents in one coordinated workflow
Where Callengo pulls ahead for business teams
Three agents built for outbound, ready to use
Vapi offers four templates, all designed for inbound conversations. There are no outbound templates for lead qualification, appointment confirmation, or data validation. Callengo ships with exactly those three agents, each with a tested call script, smart follow-up logic, and CRM field mappings already configured.
One price. No vendor math required.
Vapi's $0.05/min rate only covers its own transport layer. You pay separately for a speech-to-text provider, an LLM, and a text-to-speech provider. Using typical vendors like Deepgram, GPT-4o, and ElevenLabs, the real cost runs $0.30 to $0.33 per minute. Callengo's overage rate includes everything. $0.23/min on Business. Full stop.
No developer. Minutes, not months.
Vapi production deployments typically take 4 to 6 weeks. You need to select and configure STT, LLM, and TTS vendors, build call flow logic, write webhook handlers, set up CRM field mappings, and test edge cases. Callengo removes all of that. Connect your CRM via OAuth, pick your agent, upload your contacts, and launch. Most teams are running their first campaign the same day.
Full-loop automation, no assembly required
After a call ends, Callengo writes the outcome to your CRM, books calendar events, triggers follow-up calls, handles voicemails, and sends Slack alerts. In Vapi, each of these requires a separate webhook or tool call that you configure and maintain yourself. The difference is the difference between a product and a platform.
HIPAA included, not invoiced separately
Vapi charges $1,000 per month extra for HIPAA compliance. For healthcare practices, this adds $12,000 per year before you've run a single call. Callengo includes HIPAA compliance as standard. For medical offices, dental practices, and health services businesses, this is a meaningful cost difference.
Deep integrations for the CRMs you already use
Vapi connects to third-party tools via Zapier, Make, and webhooks, which means you're responsible for mapping fields, handling errors, and maintaining the integration when APIs change. Callengo integrates natively with HubSpot, Salesforce, Pipedrive, Zoho, Dynamics 365, and Clio, with automatic field mapping and no middleware to maintain.
Callengo: three outbound agents, all-in pricing, no developers. See it live.
Try Callengo freeWhich platform for which job?
The right choice depends on whether your team is building something custom or automating an existing outbound workflow.
Appointment confirmation and no-show reduction
Callengo recommendedCallengo has a dedicated Appointment Confirmation Agent. It calls contacts before appointments, handles reschedules live, triggers retry calls for no-answers, and updates your calendar automatically. Vapi has no outbound templates and would require building this entire workflow from scratch using its API.
Outbound lead qualification
Callengo recommendedCallengo's Lead Qualification Agent runs BANT-based qualification calls, scores leads, books meetings, and syncs to HubSpot, Salesforce, Pipedrive, or Zoho. Vapi's four templates are all inbound-focused. Building an outbound lead qualification flow in Vapi requires custom development across multiple components.
CRM database hygiene and data validation
Callengo recommendedCallengo's Data Validation Agent calls contacts to verify contact information and writes clean data directly to CRM fields. Vapi does not offer a pre-built data validation workflow. Building one requires configuring the voice stack, writing the conversation logic, and setting up webhook-based CRM writes.
Multilingual customer-facing voice products
Vapi preferredVapi supports 100+ languages with automatic detection, making it the clear choice for consumer products that need to serve global audiences. Callengo's standard plans cover English-speaking markets. For multilingual outbound at scale, Vapi's infrastructure approach has a real advantage.
Custom voice application development
Vapi preferredIf you need to build a novel voice application with custom logic, your own LLM, and a specific STT provider, Vapi's modular architecture gives you that flexibility. Callengo is a finished product for specific use cases, not a platform for building new ones.
Non-technical ops and sales teams
Callengo recommendedVapi requires a developer to reach production. Callengo is designed for ops managers, practice administrators, and sales directors who need to run outbound campaigns without involving engineering. The setup is guided, the CRM connections are native, and support comes from the Callengo team directly.
The bottom line
Vapi is a capable infrastructure platform for engineering teams who need maximum flexibility, multilingual support, and the ability to bring their own AI components. If you're building a custom voice product with complex logic and a global audience, Vapi gives you the building blocks to do it.
But that flexibility has a cost: vendor complexity, a $0.30+ effective per-minute rate, a $1,000/month HIPAA add-on, and a 4 to 6 week development timeline. Most business teams don't need that flexibility. They need automation that runs outbound campaigns, writes back to their CRM, and works today.
Callengo is the answer for those teams. Three ready-to-run agents, flat monthly pricing with no vendor math, HIPAA included, native CRM integrations, and onboarding support. You don't build it. You launch it.
Choose Callengo if...
- You want automation running this week
- Your team has no developers to allocate
- You need outbound agents, not inbound templates
- You want HIPAA compliance included, not billed separately
- You use HubSpot, Pipedrive, Zoho, Clio, or SimplyBook.me
- You want one predictable monthly bill
Consider Vapi if...
- You have developers to build and maintain the voice stack
- You need 100+ language support for global markets
- You want to bring your own LLM, STT, and TTS providers
- You're building an embedded voice product, not running campaigns
- Ultra-low latency is a core technical requirement
- You need multi-agent squad logic for complex workflows
Frequently asked questions
Does Vapi really cost $0.05 per minute?
No. Vapi's $0.05/min covers its own transport layer only. You also pay separately for a speech-to-text provider, an LLM, and a text-to-speech provider. With a typical stack using GPT-4o and ElevenLabs, the effective all-in rate is $0.30 to $0.33 per minute. Callengo's overage rates range from $0.17 to $0.29/min with everything included.
Can non-technical teams use Vapi for outbound campaigns?
Not easily. Vapi is designed for engineering teams. Getting to a production outbound campaign typically takes 4 to 6 weeks of development work. Callengo is designed for non-technical teams and can be running in under 15 minutes.
Does Vapi have outbound calling templates?
Vapi offers four templates, all focused on inbound conversations: appointment setter, customer support, Q&A, and a game NPC demo. There are no outbound templates for lead qualification, appointment confirmation, or data validation. Callengo ships with exactly those three outbound agents.
How does Callengo's HIPAA compliance compare to Vapi's?
Callengo includes HIPAA compliance as part of its standard platform with no additional fees. Vapi offers HIPAA compliance as a paid add-on at $1,000 per month. For healthcare practices running appointment confirmation campaigns, this is a $12,000/year difference before a single call is made.
Can I migrate from Vapi to Callengo?
Yes. Migration involves connecting your CRM via OAuth, selecting the relevant agent template, and launching your first campaign. The Callengo team assists Business and Teams plan customers through the migration process.
Which platform is better for a healthcare practice?
Callengo. The Appointment Confirmation Agent handles confirmation calls, live reschedules, no-show retries, and calendar updates automatically. HIPAA compliance is included with no add-on fees. Vapi would require building the entire workflow from scratch and paying $1,000/month extra for HIPAA.
Compare Callengo with other platforms
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