AI Chatbot Cost in 2026: The Four Billing Models, With Real Numbers | Nousu

Pricing guide, updated July 19, 2026

What does an AI chatbot cost in 2026? The four billing models, with real numbers

By Ezra Klijnsma, founder of NousuNousu appears in the worked examples below, so every competitor number carries a source and a date. Check them.

Short answer

AI chatbot pricing for ecommerce runs from about $29 to over $3,000 per month. Vendors bill four ways: per resolution ($0.90 to $2.00 each), per conversation, per seat, or one flat monthly price. On metered plans, your busiest month is your most expensive month. Nousu charges a flat €29, €79, or €149 per month and never bills overage: the busiest month costs the same as the slowest.

The four billing models

First understand the meter, then compare prices

Vendors quote entry prices. Your bank account experiences billing models. Every AI support tool on the market bills one of four ways, and the model predicts your invoice better than any number on a pricing page. All rates below were checked on July 19, 2026 on the vendor pages named next to each claim. Competitor prices in USD as published; Nousu prices in EUR.

1. Per resolution

You pay each time the AI fully resolves a conversation on its own. Vendor-published rates as of July 2026: Gorgias charges $0.90 per resolved conversation on most plans and $1 on Starter (gorgias.com/blog/ai-agent-pricing). Intercom's Fin costs $0.99 per resolution (intercom.com/pricing). Siena charges $0.90 per automated ticket on top of a $750 monthly platform fee (siena.cx/pricing). Zendesk bills per automated resolution but does not publish the rate; third-party breakdowns put it between $1.50 and $2.00 (Macha, eesel, July 2026). So the going rate runs from $0.90 to roughly $2.00 per resolution.

Fits
Teams that want to pay only for outcomes and have stable, predictable volume.
Watch out for
The meter rewards the vendor for your growth. The better the AI performs and the more you sell, the bigger the invoice. These fees also come on top of a base: helpdesk tickets at Gorgias, seats at Intercom and Zendesk, the platform fee at Siena.

2. Per conversation (or per visitor)

You pay per AI conversation, resolved or not. Tidio's Lyro add-on starts at $32.50 per month for 50 AI conversations, roughly $0.65 per conversation at entry volume, cheaper at scale (tidio.com/pricing, July 2026). A variant is per-visitor pricing: Rep AI starts at $104 per month for 10,000 monthly store visitors, plus $12 per additional 1,000 visitors, whether or not those visitors chat (Rep AI listing on the Shopify App Store, July 2026).

Fits
Small stores that mainly want answers to frequent questions and have modest volume.
Watch out for
You pay for attempts, not outcomes. A conversation the AI failed to resolve costs the same as one it nailed. Per-visitor pricing goes further: a successful ad campaign raises your support bill even if nobody opens the chat.

3. Per seat

You pay per human agent on the platform, and AI comes as an add-on or a separate meter. Zendesk's Suite Team costs $55 per agent per month on the US list (annual billing; UK list £45), and the Copilot add-on is another £40 (about $50) per agent per month (zendesk.com/pricing, July 2026). Intercom seats run from $29 (Essential, annual) to $132 (Expert) per seat per month, with Fin's $0.99 per resolution on top (intercom.com/pricing, July 2026).

Fits
Larger teams that live inside the helpdesk all day and want AI assistance per agent.
Watch out for
Seats measure your team size, not the AI's work. A three-person store team on Zendesk with Copilot pays around $315 per month before the AI has resolved a single ticket.

4. Flat monthly

One fixed price per month, per tier. Nousu charges €29, €79, or €149 per month, each tier sized with a conversation bundle (150, 500, or 2,500 conversations per month) and no per-seat, per-ticket, or per-resolution meter (nousu.chat/pricing, July 2026). Going over a bundle never bills overage: the busiest month costs the same as the slowest. A store that outgrows its bundle every month moves to the next tier because it fits, not because an invoice forces it.

Fits
Stores that want to budget support like they budget hosting: a known number, every month.
Watch out for
Check the bundle sizes against your typical volume. A tier you outgrow every single month is the wrong size, even when the vendor absorbs the overage.

One meter that hides in plain sight: Gorgias also bills the helpdesk itself per ticket, from $0.40 per ticket over your bundle on the Starter plan (Gorgias listing on the Shopify App Store, July 19, 2026). That is a separate meter from the AI resolution fee, and both run at once.

Worked examples

What you pay at 300, 1,000, and 3,000 tickets per month

Same store, three volumes. Assumption throughout: the AI resolves 60% of tickets end to end, in line with the 50 to 70% that stores typically reach on routine questions, and a two-person team handles the rest. Estimated rows are marked with ≈, and the full arithmetic sits under the table.

ToolBilling model300 tickets/mo1,000 tickets/mo3,000 tickets/mo
NousuOur productFlat monthly tier€79 (Core)€149 (Plus)Enterprise, on request
GorgiasPer ticket + per AI resolution$222$880$2,340
Intercom (Fin)Per seat + per resolution≈ $236≈ $652≈ $1,840
Zendesk AIPer seat + per resolution (rate estimated)≈ $380≈ $1,065≈ $2,920
Siena AIPlatform fee + per automated ticket$912$1,290$2,370
Tidio (Lyro)Plan + per AI conversation (answers only)≈ $166≈ $439≈ $1,220

The arithmetic, line by line

Nousu: 300 tickets fit the Core tier (€79, sized for 500 conversations). 1,000 tickets fit the Plus tier (€149, sized for 2,500 conversations). 3,000 tickets as a typical month is above every published bundle, so that volume is Enterprise territory, priced on request. A one-off spike over your bundle is different: Nousu never bills overage, so a peak month does not change the invoice. Source: nousu.chat/pricing.

Gorgias: 300 tickets: Basic $60 (300 tickets included) + 180 AI resolutions × $0.90 = $222. 1,000 tickets: Basic $60 + 700 extra tickets at $40 per 100 ($280) + 600 × $0.90 ($540) = $880. 3,000 tickets: Pro $360 (2,000 included) + 1,000 extra at $36 per 100 ($360) + 1,800 × $0.90 ($1,620) = $2,340. Sources: Gorgias listing on the Shopify App Store and gorgias.com/blog/ai-agent-pricing.

Intercom (Fin): Two Essential seats at $29 (annual billing) = $58, plus Fin at $0.99 per resolution: 180 resolutions ($178), 600 ($594), 1,800 ($1,782). Totals $236, $652, and $1,840. Source: intercom.com/pricing.

Zendesk AI: Suite Team at $55 per agent (2, 3, then 4 agents as volume grows) plus automated resolutions at $1.50 each. That $1.50 is a third-party estimate (Macha, eesel, July 2026); Zendesk does not publish the rate, so treat this row as indicative. Copilot add-on not included.

Siena AI: $750 platform fee plus $0.90 per automated ticket: 180 ($162), 600 ($540), 1,800 ($1,620). Totals $912, $1,290, and $2,370, before any custom volume discount from the sales process. Source: siena.cx/pricing.

Tidio (Lyro): Growth plan at $49.17 (annual billing) plus Lyro conversations at roughly $0.65 each at entry volume, cheaper at scale (Tidio markets $0.50 at volume). Approximate by design, since Tidio prices Lyro in packages. And note what the number buys: Lyro answers questions, it does not execute refunds or order changes. Source: tidio.com/pricing.

All prices checked on July 19, 2026. Annual-billing rates used where vendors publish them. Your mix of tickets, resolution rate, and negotiated discounts will move these numbers; the point is the shape of the curve, not the last dollar.

Where metered pricing bites

Your Black Friday month costs multiples of your slow month

Metered pricing looks reasonable in a demo because demos happen in average months. Stores do not have average months. Take a store that averages 1,000 tickets and spikes to 2,500 in November, with the AI resolving 60% end to end:

Intercom (Fin)

$652 in a normal month becomes $1,543 in November (1,500 resolutions at $0.99 plus two seats). About 2.4 times the usual bill.

Gorgias

$880 becomes roughly $2,290 (2,200 extra tickets at $0.40 plus 1,500 AI resolutions at $0.90). About 2.6 times the usual bill.

Nousu

€149 stays €149. Nousu never bills overage, so even a spike past the Plus bundle would not move the invoice. The busiest month costs the same as the slowest, guaranteed.

This is not an accident of pricing design. Metered vendors earn their margin on your best months. That is precisely the moment your cash is tied up in inventory and ad spend. Budget for the spike month first, then look at entry prices.

Where Nousu lands

One flat monthly price per tier

Nousu is our product, so here are the numbers plainly, same standard as the rest of this page. Three tiers, each a flat monthly price with a conversation bundle as sizing. No per-seat, per-ticket, or per-resolution meter. Go over your bundle and the invoice does not move: we never bill overage. If you are over it every month, the next tier fits better.

Start

€29/month

  • Sized for 150 conversations a month
  • Chat widget on your store
  • FAQ and knowledge base answers
  • Order status on Shopify and WooCommerce

Core

€79/month

  • Sized for 500 conversations a month
  • Automatic order status (WISMO)
  • Return handling via Shopify
  • Product recommendations in chat

Plus

€149/month

  • Sized for 2,500 conversations a month
  • 3 AI agents, unlimited team members
  • Browser agent and image recognition
  • Custom escalation rules

Enterprise (unlimited conversations, custom integrations, SLA) is available on request. Every plan starts with a 14-day free trial, no credit card. Full details on the pricing page.

Frequently asked questions

How much does an AI chatbot cost for an online store?

Anywhere from free tiers to over $3,000 per month at volume. As of July 2026: Tidio's Lyro starts around $32.50 per month, Gorgias charges $0.90 per AI resolution plus per-ticket helpdesk fees, Intercom's Fin costs $0.99 per resolution plus seats from $29, Siena starts at $750 per month plus $0.90 per ticket, and Nousu charges a flat €29 to €149 per month. The billing model determines your real cost more than the entry price does.

What does per-resolution pricing mean?

You pay a fee each time the AI resolves a conversation without a human. Vendor-published rates run from $0.90 (Gorgias, Siena) to $0.99 (Intercom Fin), with Zendesk's unpublished rate estimated at $1.50 to $2.00 by third parties as of July 2026. It sounds fair, and it is more honest than paying per attempt. The catch is that the fee scales with your success: more orders means more tickets means more resolutions means a bigger invoice.

Why do AI support costs explode in November?

Because most vendors meter usage, and ecommerce usage peaks in Q4. A store averaging 1,000 tickets that spikes to 2,500 in November pays roughly 2.4 times its normal Fin bill and 2.6 times its normal Gorgias bill that month, using vendor-published rates from July 2026. A flat tier does not move with the spike. Nousu makes that a guarantee: going over your bundle never bills overage, so the November invoice equals the January invoice.

Is flat pricing always cheaper than metered pricing?

No. At very low volume, a metered tool can cost less: 50 conversations on Lyro is cheaper than most subscriptions. Flat pricing wins on predictability and at the volumes where meters get expensive, roughly from a few hundred tickets per month. Run both models against your busiest month before deciding.

What does Nousu cost?

Three flat tiers as of July 2026: Start at €29 per month (sized for 150 conversations, order status on Shopify and WooCommerce), Core at €79 per month (sized for 500 conversations, automatic order status, return handling via Shopify, product recommendations), and Plus at €149 per month (sized for 2,500 conversations, 3 AI agents, unlimited team members). The bundles are sizing, not a meter: going over your plan never produces a bill. Enterprise is available on request. Every plan starts with a 14-day free trial, no credit card.

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