Head to head
JustCall vs Vapi
Written By Research Team
AI Outbound Calling
Fact Checked
All pricing verified against vendor documentation
Updated
Higher score
JustCall
A mature, fully-priced sales phone system that added a credible AI voice agent.
JustCall scores high for reasons that have nothing to do with AI hype: it publishes every seat price, and it holds the broadest certification set we found — SOC 2, HIPAA, ISO, PCI DSS, GDPR and CSA STAR. If your blocker is procurement rather than capability, this is the path of least resistance. The caveat matters though: its AI Voice Agent starts at $0.15/min, which is more expensive per minute than Bland, Retell or Vapi, and the core product is still a seat-based phone system.
Vapi
The cheapest published platform rate and the most developer-flexible — if you can live with the compliance gap.
At $0.05/min Vapi has the lowest published platform rate here, and bringing your own model keys can take model cost to zero. For engineering teams it is the most composable option. But read the compliance row carefully: the self-serve Build tier has no SOC 2, no SSO and no RBAC, HIPAA is a $2,000/mo add-on, zero data retention is another $1,000/mo, and call history is kept only 14 days. Those controls arrive on the annual Scale contract.
Side by side
| Criterion | JustCall | Vapi |
|---|---|---|
| Overall score | 87/100 | 76/100 |
| Rank | #3 | #5 |
| Type | AI-assisted dialer | Autonomous AI agent |
| Pricing model | Published | Published |
| Headline cost | $29–$89 per user/mo billed annually; AI Voice Agent from $0.15/min | $0.05/min on Build, plus model costs at cost (or $0 with your own keys) |
| Concurrency | Seat-based; unlimited minutes on Business tier | 10 included, +$10/line/mo; custom on Scale |
| Free trial | 14-day free trial, no credit card | No stated trial credits; signup via dashboard |
| Certifications | SOC 2, HIPAA, ISO, PCI DSS, GDPR, CSA STAR Level One | SOC 2 (Scale tier only), HIPAA ($2,000/mo add-on), PCI (Scale), SSO & RBAC (Scale only) |
Score by criterion
| Criterion | Max | JustCall | Vapi |
|---|---|---|---|
| Pricing transparency | 20 | 19 | 15 |
| Outbound capability | 20 | 12 | 16 |
| Compliance & security | 20 | 20 | 12 |
| Integrations & extensibility | 15 | 14 | 14 |
| Time to first call | 15 | 15 | 11 |
| Scale & reliability | 10 | 7 | 8 |