The shared inbox is close to a tie in principle. Both let several people answer one number. WatMark lists auto-assignment by round-robin or least-loaded on every plan, plus tags, internal notes, @mentions and a separate internal team chat. WATI lists a team inbox on Growth and names round-robin assignment on Business. WATI's page does not say Growth has no assignment at all, so ask them how new chats are routed on the plan you would buy.
Campaigns and automation are where the entry plans differ. WatMark lists campaigns, bulk messaging and automation on every plan, with analytics that follow a send from delivered and read through to replies, leads and revenue. WATI Growth includes chatbots and broadcasts, capped at 15,000 broadcasts and 1,000 automation triggers a month. Pro lifts the broadcast cap. If you broadcast to a large list every week, price WATI Pro.
AI is the clearest difference in approach. WATI includes Astra AI agents on every plan, described as handling conversations end to end, and Business includes unlimited agents, voice among them. That is the right product if you want a bot to finish the chat. AI suggests replies from conversation history for an employee to review, edit and send. It does not message customers on its own. The AI assistant is an add-on on Starter, Business and Enterprise, and it is separate from rules and chatbots, which send only what you set up. If a person has to approve every reply, that rule alone decides between the two.
Sales workflows lean toward WatMark. Quotations, invoices with payment links, WhatsApp Commerce and appointments are on WatMark's pricing comparison for every plan, along with Meta lead form sync and Click-to-WhatsApp ad attribution. WATI's pricing page lists a Shopify add-on. We could not confirm from that page which plans include quotations, invoices, appointments, ad attribution or a website widget, so those cells tell you to check WATI's pricing page.
Channels lean toward WATI. WATI Growth lists an omnichannel inbox. WatMark is a WhatsApp workspace and does not claim to be the inbox for Instagram, TikTok or email. If those channels are part of the daily queue, that matters more than any row above.