Retell AI alternative for WhatsApp calls: Dialaunch vs Retell

Retell AI presents itself as a platform to build, test, deploy and monitor voice and chat agents. Its docs cover single-prompt, multi-prompt and conversation flow agents, phone numbers, elastic SIP trunking, and call transfers in cold, warm and agentic warm modes. It suits builders and agencies that design phone agents for themselves or for clients.

Dialaunch is for businesses whose customers call them on WhatsApp. On one WhatsApp phone, you take one call at a time and the next caller hits a busy line. Dialaunch lets one WhatsApp Business number take many simultaneous calls: each is answered by the AI agent, routed to the next free agent, queued with hold music, or handled by the step you configured. You design the flow and place the AI where you want it.

Retell’s chat agent documentation says it has no built-in integrations with third-party chat platforms such as WhatsApp, and its integrations page lists WhatsApp as an unofficial connector through automation tools, typically for messages after a call. At the time of writing (October 2026), we did not find documentation for answering WhatsApp voice calls with Retell; check with them.

Dialaunch is built on Meta’s WhatsApp Business Platform. Customers call your WhatsApp number as usual, and the AI answers in any language they speak, from your own information. It confirms orders, books appointments in Google Calendar, checks deliveries, creates callbacks and calls your systems through an API you connect.

Both tools answer calls with AI that sounds like a person. They differ in channel, setup and what happens when a person is needed.

• Primary channel: Retell, phone calls through its numbers or your SIP trunk, plus chat agents. Dialaunch, WhatsApp Business calls, plus your phone number through a SIP trunk and website calls.
• WhatsApp voice calls: Retell, no built-in WhatsApp integration documented (October 2026). Dialaunch, inbound WhatsApp calls, and call-backs once the customer accepts a call permission request.
• Building the agent: Retell, prompts and conversation flows you design. Dialaunch, guided setup from your website, catalog and answers in about 15 minutes.
• Handing to a person: Retell transfers calls to a number or SIP address. Dialaunch puts the call in your team’s queue, and it rings on the phone your team already uses.
• Team control: Dialaunch lets managers listen live, whisper, take over in one click and hand back to the AI.
• Contact centre: Dialaunch adds keypad menus, queues with hold music, opening hours with holidays and time zones, voicemail, recording with consent and retention, and reporting per agent, team and number.

If your customers dial phone numbers, you want detailed control over prompts and flows, or you build voice agents for many clients as an agency, Retell is a strong option. Its transfer modes and SIP options give builders a lot of room on the phone network.

Dialaunch fits when the calls come in on WhatsApp and you want them answered properly from day one. The AI says it is an AI, hands the call to a person when asked or when the caller is upset, and writes a summary, key moments and an outcome for every call. Your team works from a live view of queues, agents and AI calls, with full call history and a timeline for each call.

You can keep Retell on your phone lines and connect your WhatsApp number to Dialaunch. If you want one system for both, Dialaunch also answers calls to your own phone number through a SIP trunk, in the same flows. Dialaunch does not provide or port phone numbers.

Once a WhatsApp number is connected to Dialaunch, it stops working in the WhatsApp Business app, and the app’s chat history does not move over. EU hosting is available, and Dialaunch is GDPR-ready with a DPA.