The Modern
Vonage Alternative
Same powerful communications API. Simpler pricing. Built-in AI agents. See why developers are switching from Nexmo.
No credit card required. First US phone number is free.
Feature Comparison
Everything you need, plus AI capabilities Vonage doesn't offer.
| Feature | Zavu | Vonage |
|---|---|---|
| SMS API | ||
| WhatsApp Business API | ||
| Email API | ||
| Built-in AI Agents | ||
| Knowledge Base (RAG) | ||
| Visual Flow Builder | ||
| Per-contact pricing | ||
| Free first US number | ||
| Webhooks included | ||
| Multi-language SDKs |
Pricing Comparison
Transparent pricing. No complex plans or surprise fees.
| Item | Zavu | Vonage |
|---|---|---|
| SMS to US (per message) | $0.0077 | $0.0078 |
| WhatsApp conversation (marketing) | $0.005 + Meta fee | Meta fee + markup |
| US Phone Number | 1 Free, then $1.15/mo | $1.25/mo |
| AI Agent (GPT-4o-mini) | $0.15/1M input tokens | Not available |
| Inbound webhooks | Free | Free |
Why Developers Switch
Save on Every Message
Our per-contact pricing means unlimited messages to the same user for one flat fee. High-volume senders save significantly.
Built-in AI Agents
Automatically respond to customer messages with AI. No third-party integrations needed. Connect your LLM and go.
Modern Developer Experience
Clean REST API design without legacy baggage. Quick to integrate, easy to maintain.
Developer-First
Clean REST API, comprehensive SDKs for Python, Node.js, Go, Ruby, and Java. Documentation developers actually enjoy reading.
Real Support
Talk to actual engineers, not ticket queues. We help you migrate and optimize your messaging infrastructure.
Enterprise Ready
99.9% uptime SLA, SOC 2 compliance, and dedicated infrastructure for high-volume customers.
Migration FAQ
How hard is it to migrate from Vonage/Nexmo?
Most migrations take a few hours. Our REST API follows modern patterns, and we provide migration guides. We can also help you port your phone numbers.
Do you support all the same features as Vonage?
We support SMS, WhatsApp, and Email with all the features most developers need. We don't support Voice yet, but it's on our roadmap. Plus, we have AI agent capabilities Vonage doesn't offer.
What about reliability?
We maintain 99.9% uptime with redundant infrastructure. We use premium carrier connections for SMS delivery. For WhatsApp, we're direct Meta partners.
Can I try before fully migrating?
Yes! Start with a test integration, verify everything works as expected, then migrate your production traffic when you're ready.
Do you offer volume discounts?
Yes, for high-volume senders we offer custom pricing. Contact us for enterprise plan details.
Ready to Switch?
Join developers who've already made the switch. Start free, migrate at your own pace.