Convarza AI vs Retell AI: a voice-agent engine, or the agent plus the inbox and CRM
Retell AI is a voice-agent platform built for developers and agencies: a visual flow builder or full API, your choice of LLM and voice, pay-as-you-go pricing per minute, and integrations that push call outcomes into the CRM you already run. Convarza AI puts the same kind of AI voice agent inside a complete conversations platform — WhatsApp and the other chat channels, a shared inbox for your team, contacts with lead stages and multi-channel campaigns. Row by row, from Retell AI's own published pages.
Feature comparison
| Convarza AI | Retell AI | Notes | |
|---|---|---|---|
| AI voice agent, inbound and outbound | ✓ | ✓ | Both answer and place calls. |
| How you build it | No-code: prompt, knowledge base, functions, handover | No-code flow builder, or API, SDKs and MCP | Retell AI offers far more developer control. |
| Choice of LLM and voice provider | Model per bot | Wide choice, priced per component | Retell AI lists many LLMs and voice providers, each priced separately. |
| Telephony | Your Twilio, Maqsam or SIP numbers | Retell numbers (US, Canada), SIP, Twilio, Telnyx and more | Both work with your own line. |
| Transfer to a person | ✓ | Warm and cold transfer | Both hand over mid-call. |
| Calendar booking | Built-in calendar and booking links | Via Cal.com or Calendly | Convarza AI books from its own calendar. |
| Built in | Unofficial connector | Retell AI connects WhatsApp through an automation platform. | |
| Instagram, Facebook, Telegram, Viber and LINE | ✓ | Not listed | Retell AI lists web, in-app chat and SMS. |
| Shared inbox for your team | ✓ | Not listed | Retell AI lists role-based access and live call monitoring. |
| Contacts and lead stages built in | ✓ | Via CRM integrations | Retell AI syncs to Salesforce, HubSpot, Dynamics 365, GoHighLevel or Zoho CRM. |
| One campaign: AI call, then WhatsApp, then email | ✓ | Not listed | Retell AI batch campaigns cover calls and SMS. |
| Post-call analysis and sentiment | ✓ | ✓ | Both score calls after they end. |
| Price | From ₹2,499/mo — 600 AI calling minutes, 1 user | $0.07–$0.31/min, pay as you go | Retell AI has no platform fee and $10 in free credits; Convarza AI is a monthly plan with minutes included. |
Note: The Retell AI column is taken from Retell AI's own public pages as they stood on ; prices are as displayed there. "Not listed" means those pages do not mention it. Verify against their current pages before deciding.
Where Convarza AI is stronger
- The AI voice agent comes with WhatsApp, Instagram, Facebook, Telegram, Viber, LINE, web chat, SMS and email in one shared inbox — no unofficial connectors.
- Contacts, lead stages and the activity feed are built in, so outcomes land in a CRM without integration work.
- Campaigns that call, then WhatsApp, then email, and stop per person the moment they reply.
- A built-in calendar with booking links that the AI uses mid-call and mid-chat.
- Run by your sales or support team, not your developers — with a monthly plan priced in rupees.
Where Retell AI is the better choice
- You are a developer or agency and want API, SDK and MCP control over every part of the voice agent.
- You want to pick your own LLM and voice provider and pay per minute, with no platform fee.
- You need published enterprise compliance — Retell AI states SOC 2 Type II, HIPAA with a BAA, GDPR and ISO 27001.
- You need ready-made integrations with US contact-centre and healthcare systems.
When the other option is the right one
If you are building voice agents as a developer or agency and want control over every component, Retell AI is a strong engine. Convarza AI is for businesses that want the AI voice agent, the chat channels, the team inbox and the CRM working together out of the box.
The whole platform, on every plan
Shared inbox
WhatsApp, Instagram, Facebook, Telegram, Viber, LINE, your web widget, SMS and email land in a single queue your team actually works from.
AI chatbot
One bot answers WhatsApp, Instagram, your web widget, SMS and email — and hands the conversation to a person the moment your condition says it should.
AI voice agents
An AI agent answers your line in natural speech, follows your prompt, calls your functions, and hands to a human the moment it should.
Call flows
Ring agents, hand to an AI agent, branch on a condition, run an IVR menu, check business hours, take voicemail — as one flow you can read.
Campaigns
AI call. No pickup, WhatsApp. Four hours on, call again. Still nothing, email. Written as sentences, running from a day to two months, across every channel your customer actually uses.
Sequences
Someone fills a form, or you enrol them by hand. Then a call, a WhatsApp, a wait, an email — and along the way a stage change, a task, a booked meeting. A campaign and a workflow in one.
About this comparison
Where does the information about Retell AI come from?
Only from Retell AI's own public pages, checked on 2 November 2026 and linked at the foot of this page. Where those pages do not mention a feature we write "Not listed", not "No" — it may exist and simply not be on the page. Products and prices change; check Retell AI's current pages before you decide, and if anything here is out of date, email legal@convarza.com and we will correct it.
Is Convarza AI a Retell AI alternative?
If you want the AI voice agent, the chat channels, the team inbox and the CRM in one product your team runs without developers, yes. If you are a developer or agency building custom voice agents on your own stack, Retell AI is designed for exactly that.
When would you tell me not to buy Convarza AI?
If you are building voice agents as a developer or agency and want control over every component, Retell AI is a strong engine. Convarza AI is for businesses that want the AI voice agent, the chat channels, the team inbox and the CRM working together out of the box.
What does Convarza AI cost?
Four plans from ₹2,499 to ₹54,999 a month, with yearly billing costing ten months. No setup fee and no per-conversation charge. See pricing.
Sources, checked 2 November 2026: Retell AI pricing · Retell AI home page · Retell AI integrations · Retell AI docs. Retell AI is a trademark of its owner, used here only to identify the product compared. Convarza AI is not affiliated with or endorsed by Retell AI.
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