// Guide · 6 min read

How much does an AI customer support assistant cost?

What it costs to build and run a custom AI support assistant that answers from your documents and order data, and how it compares with chatbot subscriptions.

By Simple To Work ·

An AI support assistant answers customer questions on your website or in your inbox, using your own documents and, if you want, live order data. Anything it cannot handle goes to a person. Here is what it costs and what changes the price.

Subscription or custom?

  • Helpdesk add-ons and chatbot subscriptions are quick to switch on and fine for answering from a help center. Fees are monthly, often per resolution or per seat.
  • A custom assistant makes sense when answers depend on your systems (orders, accounts, inventory, appointments), when you need strict control over what it may say, or when per-resolution fees add up.

Typical custom ranges

  • $10,000 to $25,000: a pilot that answers from your documents, with handoff to a person and a review screen for conversations.
  • $25,000 to $60,000: connected to order, account or booking data, takes simple actions (status, reschedule, returns), works in chat and email, with reporting.
  • Running it: AI model usage is usually a few cents per conversation, plus hosting; most businesses spend tens to a few hundred dollars a month at small volumes. Maintenance and tuning are extra.

What moves the price

  • Connected data. Answering from documents is the simple case. Looking up a customer’s order safely needs authentication and careful permissions.
  • Actions. Letting the assistant change something, like a delivery date, needs confirmations, limits and logs.
  • Channels. Website chat, email and SMS each add work.
  • Guardrails. Topics it must refuse, regulated industries and human review all add design and testing.

How to keep it safe

  • Give it access only to the data each question needs, never the whole database.
  • Hand off to a person whenever it is unsure, with the conversation attached.
  • Review a sample of conversations every week for the first months.

Our AI support assistant demo answers from a fictional company’s documents and orders. Our guide on adding AI to business software safely covers the guardrails in more detail.


More guides: How much does a custom app cost? · How much does a B2B ordering portal cost? · NetSuite SuiteCommerce or a custom B2B portal? · ServiceTitan or custom dispatch software? · Custom software or off-the-shelf? How to decide · What to prepare before you hire an app developer · Adding AI to business software, safely · How to stop taking orders by email · A customer portal on top of NetSuite or QuickBooks · Shopify app or custom build? How to tell · How to forecast inventory for retail stores

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