kitio.aiVapi vs ConvoStack
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. ConvoStack has the lower starting price: about $9 a month, against $29 for Vapi.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Voice agent orchestration
- Choice of STT, LLM and voice providers
- Phone numbers and SIP
- Real-time call monitoring
- HIPAA add-on
- Zero data retention option
- AI phone agents
- Intent detection
- Structured data capture
- Call routing
- Outbound campaigns
- API access
| Feature | Vapi | ConvoStack |
|---|---|---|
| Best for | Developer platform to build, test and deploy voice AI agents | AI voice agents that answer business calls and capture caller details |
| Category | Customer support | Customer support |
| Pricing model | Freemium | Paid |
| Starting price | $29/mo | $9/mo |
| Free plan | Yes | No |
| Made by | Vapi | ConvoStack |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
ConvoStack has the lower starting price: about $9 a month, against $29 for Vapi.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
By Usage
Pay per minute
- $5 free credits
- 1 phone number included
- 4 concurrent calls
- 14 days of data retention
Core
$29/mo
- 5 phone numbers
- 10 concurrent calls
- 30 days of data retention
- Zero data retention included
Pro
$999/mo
- 10% of hosting fee, $999 minimum
- 30 concurrent calls
- RBAC and dedicated Slack support
- 99% uptime SLA
Premier
Contact sales
- Custom concurrency and retention
- Named support team
- 99.9% uptime SLA
3 plans
Starter
$9/mo
- 3,000 credits, about 300 minutes
- 3 AI agents and 3 numbers
- API access and campaigns
Scale
$199/mo
- 100,000 credits, about 10,000 minutes
- 3 workspace seats
- Dedicated onboarding
Enterprise
Contact sales
- HIPAA BAA and custom DPA
- Unlimited seats and voices
- Higher concurrency
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Vapi
- Mix and match model and voice providers
- Free credits to start building
- Many telephony options
- Per-minute costs stack across providers
- Pro package has a $999 monthly minimum
- Built for developers, not no-code users
ConvoStack
- Low entry price
- API included on every plan
- HIPAA BAA available
- Starter covers only about 300 call minutes
- Big jump in price to the Scale plan
- Few named integrations
Which one should you choose?
Choose Vapi if you want:
- Mix and match model and voice providers
- Free credits to start building
- Many telephony options
Watch out: per-minute costs stack across providers.
Choose ConvoStack if you want:
- Low entry price
- API included on every plan
- HIPAA BAA available
Watch out: starter covers only about 300 call minutes.
Vapi vs ConvoStack FAQ
What is the difference between Vapi and ConvoStack?
Vapi: Developer platform to build, test and deploy voice AI agents. ConvoStack: AI voice agents that answer business calls and capture caller details. Both are customer support tools.
Is Vapi or ConvoStack cheaper?
ConvoStack has the lower starting price: about $9 a month, against $29 for Vapi.
Do Vapi and ConvoStack have free plans?
Vapi: Yes. ConvoStack: No.
Who makes Vapi?
Vapi is made by Vapi, based in United States.
Who makes ConvoStack?
ConvoStack is made by ConvoStack.
Which should I choose, Vapi or ConvoStack?
Choose Vapi if you value mix and match model and voice providers and free credits to start building. Choose ConvoStack if you value low entry price and api included on every plan.