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There is no universal winner. Choose based on the work you need done: a shared sales or support inbox, campaigns, automation, or commerce workflows. The WhatsApp Business Platform provides the messaging connection; WATI, Interakt, and AiSensy add software around it. Compare the provider’s current India plan and your expected message bill together—not just a headline subscription price.

First, separate WhatsApp from the software you buy

“WhatsApp Business API” is commonly used to mean the underlying WhatsApp Business Platform. Meta supplies the messaging service and sets message-category and destination-market pricing. A provider such as WATI, Interakt, or AiSensy can add a browser-based inbox, team controls, campaign tools, automations, integrations, and support. The provider subscription is separate from WhatsApp message charges. Meta’s pricing page explains the platform charges; vendor plan pages describe their own software and inclusions.

That distinction matters for a small business: adopting the platform alone does not tell you whether you will have the team interface or workflow features you need, while buying a provider plan does not necessarily mean message delivery is included in its subscription.

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Which option fits your workload?

Your main need What to compare first Evidence-based starting point
One-person business with modest chat volume Whether a paid shared inbox or automation suite is needed at all; include the platform fee and likely message charges in the decision. Do not choose a provider solely because it offers a WhatsApp API connection. Price the workflow you actually need.
Growing support or sales team Shared inbox, agent assignment, permissions, analytics, seat limits, and how agents handle the same customer conversation. Interakt’s feature page describes shared inbox, auto-assignment, conversation and agent analytics. AiSensy lists a shared live-chat inbox. Verify plan-specific limits before choosing either.
Campaign-led business Delivered marketing-message volume, recipient countries, message-category billing, campaign tools, and any add-ons. AiSensy lists broadcasts and retargeting among its platform functions. Compare campaign workflow and total cost against a quote from other providers; do not infer a ranking from feature descriptions alone.
E-commerce or order-heavy business Catalog and order workflows, payment links, Shopify or other required integrations, and whether those functions are included in the proposed plan. Interakt describes catalog/order tools, payment links, Shopify integration, APIs, and webhooks. Ask for an India plan showing which functions are included.
Custom CRM or developer workflow API and webhook access, branching automation needs, integration support, and any usage or add-on charges. Interakt describes APIs and webhooks; AiSensy lists API automation and integrations. Confirm the exact capabilities and limits for your intended workflow.

These are workflow-based starting points, not a tested vendor ranking. Feature availability may depend on plan, configuration, or add-on.

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What the three providers are documented to offer

WATI: verify plan details before comparing price

WATI’s official pricing result advertises a seven-day free trial, zero setup fees, and the ability to sync a WhatsApp Business App with WATI for chats and campaigns. The pricing page could not be opened for verification, so current India pricing, included seats, feature limits, and the precise sync or coexistence terms are not established here. Treat those surfaced statements as vendor-page claims, then confirm them and the workflow for your existing number directly with WATI. WATI pricing

Interakt: evaluate team handling and commerce workflows

Interakt’s official features and pricing page describes a shared team inbox, auto-assignment, conversation and agent analytics, chatbot tiers, forms, payment links, catalog and order tools, Shopify integration, APIs, and webhooks. Some displayed message-cost and plan details are marked as applying to Indian destination numbers, but the page redirected to a US pricing view when checked. Do not use its displayed dollar amounts as an India quote; request current India pricing and confirm which features and limits apply to the offered plan. Interakt pricing and features

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AiSensy: compare its listed platform tiers and add-ons

AiSensy’s India pricing page lists broadcasts, retargeting, a shared live-chat inbox, contacts, tags and attributes, API automation, and integrations. It says chatbot and AI-agent add-ons are priced separately and that message credits are managed separately from the platform plan. Its published plan prices are useful for an initial comparison, but confirm billing cadence, GST, add-ons, and current message rates before purchase. AiSensy pricing

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How to estimate the total cost

Build a monthly estimate from the provider subscription plus WhatsApp charges, then add any applicable seats, add-ons, taxes, onboarding, top-ups, or provider markup. The exact list depends on the vendor’s quote. Message charges depend on delivered volume, recipient market, and category—not simply on the number of messages you try to send. Meta describes four categories: marketing, utility, authentication, and service. Meta’s platform pricing page says charges are per delivered message.

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Cost item What to put in your estimate
Provider plan Recurring platform subscription for the quoted India plan and billing interval.
WhatsApp message charges Expected delivered messages by category and recipient country, using the current applicable rate card and billing treatment.
Seats and limits Number of agents, role or usage limits, and charges to add capacity if needed.
Extras and tax Required chatbot, AI, integration, onboarding, or other add-ons; GST and any minimum top-up or provider markup stated in the quote.

For example, a campaign-heavy business should model its expected delivered marketing templates by destination and add the provider plan and any relevant extras. A support-heavy business should also forecast service replies and verify how those are billed by both Meta and the provider. These are different cost mixes, so a single “cost per WhatsApp message” is not a reliable budget.

India message-rate caveat: Meta and AiSensy currently differ

There is a material discrepancy in the published billing information reviewed as of October 4, 2026. Meta’s general pricing page says businesses are not charged for service messages or utility messages sent in response to users. It also describes a 24-hour customer service window that resets with each user message, and a 72-hour free entry point after a qualifying Click-to-WhatsApp ad or Facebook Page call-to-action. Meta’s page

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AiSensy’s India pricing page says that, effective October 1, 2026, the first 1,000 service messages per WhatsApp Business number each month are free and later service messages cost ₹0.145 each; it also says utility messages delivered within the 24-hour window are chargeable from that date. That same page lists India rates of ₹1.09 per delivered marketing message and ₹0.145 per delivered utility or authentication message. These are AiSensy’s published figures, not a conflict-free confirmation of Meta’s universal rate card. Check the current Meta rate card and the provider’s invoice treatment before using an exact service-message figure in your budget. AiSensy’s India pricing page

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Published item What the cited source says How to use it
Marketing, India ₹1.09 per delivered message, listed by AiSensy on its current pricing page. Use as AiSensy’s published figure to check against the current rate card and your provider quote.
Utility or authentication, India ₹0.145 per delivered message, listed by AiSensy on its current pricing page. Confirm category and window treatment for your traffic before forecasting.
Service messages, India AiSensy says 1,000 per WhatsApp Business number monthly are free from October 1, 2026, then ₹0.145 each; Meta’s general page says service messages are not charged. The published statements conflict. Do not budget an exact service rate without checking the current rate card and invoice terms.
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AiSensy’s displayed monthly plan prices

The following are the prices shown on AiSensy’s India pricing page when accessed October 4, 2026. They are vendor-displayed amounts, not independently tested quotes; the page details should be confirmed at purchase, including tax and billing cadence. AiSensy pricing

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Pro ₹3,200/month Confirm billing cadence, GST, included limits, and any required add-ons with AiSensy.
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Enterprise Custom priced Request a written quote for your workload and requirements.

Comparable India plan prices for WATI and Interakt are not established by the available official pages: WATI’s pricing page timed out, and Interakt’s page redirected to a US view. Their India prices and plan limits are therefore not stated here. Request current, written quotes rather than comparing AiSensy’s displayed monthly figures with unverified amounts. WATI pricing · Interakt pricing

A practical way to choose

  1. Write down the workflow. Decide whether the main job is customer support, sales-lead assignment, outbound campaigns, automated FAQs, order updates, or a custom integration. Identify the must-have actions rather than starting with a vendor shortlist.
  2. Count the people and access they need. Record the number of agents, assignment needs, permissions, and analytics requirements. Ask each provider which quoted plan includes them and what happens when the team grows.
  3. Forecast messages by type and destination. Estimate monthly delivered marketing, utility, authentication, and service messages, including the countries receiving them. Ask the provider how templates and service-window traffic appear on its bill.
  4. Request like-for-like India quotes. Ask WATI, Interakt, and AiSensy for the same seats, workflow, integrations, message volumes, billing interval, taxes, and add-ons. Keep the quote date and any minimum top-up or markup in the comparison.
  5. Check your existing-number workflow. If retaining or synchronizing an existing WhatsApp Business App workflow matters, ask the provider to explain number setup, coexistence or sync conditions, migration, and support in writing. Do not assume terms from a brief search-result claim.
  6. Verify the current billing rules before committing. Compare the current Meta rate card with the provider’s written category and service-window billing explanation, particularly given the discrepancy between Meta’s general page and AiSensy’s October 2026 notice.
  7. Choose the least complex plan that meets the need. Prefer a demonstrably included feature over an assumed capability, and add optional automation or AI only if it solves a defined workflow.

What to ask before signing up

  • What is the total India price for the exact number of agents and features quoted, and is it monthly, annual, or otherwise billed?
  • Are message credits separate from the subscription? Are any top-ups required, and is there provider markup on messaging?
  • Which functions are included in this plan, and which require add-ons—for example, chatbot, AI agent, Shopify, APIs, webhooks, or other integrations?
  • What is the current treatment of marketing, utility, authentication, and service messages, including messages within the 24-hour service window and qualifying 72-hour free-entry cases?
  • How are taxes, onboarding, extra agents, contact or automation limits, and cancellation handled in the written offer?
  • Can the proposed setup work with the existing number and app workflow, and what migration and support process applies?

Record the answer, quote date, currency, billing interval, tax treatment, seats, add-ons, message volume by category and destination, and any provider markup. That makes the comparison useful even if plan pages change.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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