Zavu
One API for WhatsApp, SMS, voice, email and Telegram
SubscriptionAPI2 impressionslaunches Oct 14
More API tools →74 free dev tools →
Zavu provides a single API to send and receive messages across WhatsApp, SMS, voice, email, Telegram, Instagram and Messenger.
- for
- Developers building messaging features and AI agents that need multi-channel communication.
- pricing
- freemium
- license
- Apache-2.0
Key features
- One unified API — Send and receive on all supported channels through a single integration and webhook.
- Agent-first runtime — Create AI or voice agents that manage senders, numbers and workflows via code or CLI.
- Multi-language SDKs — Official SDKs for TypeScript, Python, Ruby, Go and PHP.
- Built-in LLM proxy — Use your own OpenAI, Anthropic, Google or Mistral keys with no markup.
- Memory units — 250 k memory units free per month for agents to remember contacts.
- Channel add-on pricing — Add WhatsApp, Telegram, Instagram, Messenger, email, SMS or voice with flat monthly fees.
Use cases
- Customer support agents answering queries on WhatsApp, SMS or email
- Transactional notifications such as order updates sent via the customer’s preferred channel
- Voice agents that handle calls, translate speech and hand off to a human when needed
Zavu pricing
- Free$0/mo2,000 messages/month on WhatsApp, Telegram, Instagram, Messenger · $2 credit for SMS, voice, email · 250 k memory units/month · No credit card required
- Pro$20/mo/monthUnlimited send/receive on all channels · $20 monthly credit for SMS, voice, email · Multi-tenant support with spend limits · 2 M memory units/month (extra $5 per million)
Zavu vs alternatives
 Zavu |  Vonage |  Twilio |  SendGrid |  OpenRouter | |
|---|---|---|---|---|---|
| Best for | Unified messaging API for AI agents | Multi-channel messaging via separate services | Unified messaging with lower platform fees | All-channel messaging beyond email | Unified AI model access |
| Pricing | Freemium | Subscription | Subscription | Subscription | Subscription |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Oct 2031 | — | — | — | — |
- Zavu vs Vonage: Vonage offers separate APIs for each channel, while Zavu consolidates them into one API and bill.
- Zavu vs Twilio: Twilio provides similar messaging channels but charges per service and has higher platform fees; Zavu bundles fees and includes credit.
- Zavu vs SendGrid: SendGrid focuses only on email delivery, whereas Zavu handles email plus SMS, voice, WhatsApp and more.
- Zavu vs OpenRouter: OpenRouter aggregates AI model endpoints, while Zavu aggregates communication channels and adds agent runtime.
Zavu FAQ
Do I need a credit card to start using Zavu?+
No, the Free plan is free forever and does not require a credit card.
Can I use my own LLM provider?+
Yes, you can bring your own OpenAI, Anthropic, Google or Mistral key with no markup.
How are SMS and voice costs calculated?+
Rates start at $0.004 per SMS and $0.07 per minute for voice, varying by destination and carrier.
What happens when my credit runs out?+
When the balance reaches zero, messages stop sending until you top up the account.
Is there support for multiple clients in one account?+
The Pro plan includes multi-tenant capabilities with separate spend limits per client.
Can I buy phone numbers through Zavu?+
Yes, you can purchase and manage phone numbers via the API or dashboard.
Summarized by DevHunt from zavu.dev · Oct 25, 2026. Details may change; check the official site.
