Best AI Agents for Ecommerce in 2026, and When a Custom Agent Wins

By Bhavesh Barot | Vendor pricing and docs checked on September 17, 2026 | 17 min read

Search for the best AI agents for ecommerce and names like Gorgias, Fin, Rep AI and Alhena come up. They are real options, but they do different jobs, bill by different units and work on different platforms. A support agent billed per resolution and a shopping assistant billed per visitor are not rivals.

This guide sorts them by job: customer support, shopping help, on-site search and back office work. We checked each vendor's own pricing page and docs on September 17, 2026. New to the terms? Read what agentic commerce is or how AI chatbots and AI agents differ. For AI that is not an agent, like copywriting tools, see the best AI for ecommerce.

Our interest: FactoryJet builds custom AI agents and sells its own commerce operator, Commerceflo by FactoryJet, and we are a registered Shopify Partner. So we have a stake in the build side of this decision. Commerceflo is listed last and described only from its product page, and we say plainly where an off-the-shelf tool is the better buy.

Best AI Agents for Ecommerce at a Glance

Pricing is each vendor's published model on September 17, 2026, with sources in the sections below. Setup effort is our reading of each vendor's setup docs.

1. Customer Support Agents

Support is where most stores start, because the questions repeat: where is my order (often shortened to WISMO), can I return this, can I change my address. These four tools answer those questions and, on the right plan, act on them.

Gorgias AI Agent: Best for Shopify-First Brands

Gorgias is a helpdesk built for ecommerce. Its AI Agent docs say one AI Agent plays two roles: a support agent for returns, tracking and cancellations, and a shopping assistant before purchase. It works on email, chat, SMS and social channels, in more than 80 languages. The AI Agent page lists Shopify actions such as refunds, cancellations, order edits, address changes before fulfillment and starting a return, plus custom actions that call other apps.

• Works with:one AI Agent per connected Shopify store, per Gorgias's docs. The helpdesk also connects WooCommerce on every plan, BigCommerce from Basic and Magento from Pro.
• Pricing: Gorgias's pricing page lists the helpdesk from $10 a month (Starter, 50 tickets) to $750 a month billed annually (Advanced, 5,000 tickets). AI Agent adds $0.90 per automated interaction on annual plans or $1.00 on monthly plans, and $1.50 each past your plan's allowance.
• Best for: Shopify and Shopify Plus brands that want one inbox, one AI agent and one bill.
• Watch out for: each automated interaction also counts as a helpdesk ticket, and if a person replies within 72 hours of an AI resolution, it is billed as a ticket instead. Actions like cancellations and discounts are not on Starter. On a non-Shopify store, confirm AI Agent coverage in a demo.

Fin (Intercom Fin): Best Across Channels and Helpdesks

Fin is the AI agent from the company that was called Intercom until May 12, 2026, when it renamed itself Fin. Intercom is still the name of its helpdesk. You train Fin on your knowledge, policies and data connectors, write Procedures for multi-step work, and run it on email, chat, WhatsApp, SMS and social channels. Its Shopify App Store listing says it resolves order questions using real-time data.

• Works with:the Intercom helpdesk or your current one. Fin's pricing page names Salesforce, HubSpot, Freshworks, Dixa, Front, Zoho, Sprinklr and Gorgias.
• Pricing: $0.99 per outcome, with a 14-day free trial. On another helpdesk there are no seat fees but a 50-outcome monthly minimum. On the Intercom helpdesk, seats cost $29, $85 or $132 a month billed annually.
• Best for: brands that support shoppers on many channels, or want AI on a helpdesk they already use.
• Watch out for: an outcome is not only a resolution. Fin also bills when it completes a Procedure that hands off to a person. You pay once per conversation, and handoffs without an outcome are free. Fin is a general support agent, not an ecommerce-only one. On June 15, 2026, Fin announced an agreement for Salesforce to acquire it. Its CEO says little will change for customers, but if you run Fin on another helpdesk, ask about the roadmap before you sign a long contract.

Zendesk AI Agents: Best If You Already Run Zendesk

Zendesk AI agents answer customers on messaging, email and voice, and act in other systems through actions and API integrations you configure. Zendesk is a general helpdesk. Its Shopify integration shows order details to human agents and lets them refund or cancel Shopify orders from a ticket. Getting an AI agent to do that means setting up the actions yourself.

• Works with: Zendesk Suite and Support plans, Shopify through the integration, and other systems through APIs.
• Pricing: seats start at $19 per agent a month for Support Team and $55 for Suite Team, billed annually. AI usage is billed per automated resolution from a dollar allowance of $2 to $10 per agent seat a month, by plan. Zendesk does not publish per-resolution rates.
• Best for: teams already on Zendesk that would rather add AI than switch helpdesks.
• Watch out for: Zendesk moved to resolution tiers on May 18, 2026, and says assisted escalations and contained resolutions do not count against your allowance. It also retires AI agents Essential and its legacy bot builder on December 10, 2026. Ask sales for your real rate before you commit.

Klaviyo Customer Agent: Best If Klaviyo Holds Your Customer Data

Klaviyo's Customer Agent setup guide says it works on web chat, email, SMS and WhatsApp. It tracks orders, answers product questions, recommends products, processes returns and exchanges, manages subscriptions and hands off to a person. Klaviyo says customer data is never used to train large language models.

• Works with: Klaviyo accounts. Order tracking turns on when Shopify is connected, and returns, subscription and loyalty skills need connected tools such as Loop, Recharge or Yotpo.
• Pricing: Klaviyo's pricing page bills it by conversations resolved without a person, with the first 50 free as a one-time trial.
• Best for: brands already running email and SMS in Klaviyo.
• Watch out for: custom skills and custom tools are still in open beta.

2. Shopping Assistants and Product Discovery

Shopping assistants work before the sale. They answer product questions, recommend items and guide hesitant shoppers to checkout. These two price very differently.

Rep AI: Best for Proactive Selling on Shopify

Rep AI's Shopify App Store listing describes a proactive assistant. It spots shoppers who hesitate, opens a chat to recommend products and guide them to checkout, and handles order status, returns and cancellations before handing off to live chat. It connects with Gorgias, Zendesk, Klaviyo, Attentive, Postscript and Tapcart.

• Works with: Shopify, plus WooCommerce and Salesforce Commerce Cloud integrations listed on its site.
• Pricing: by store visitors. The free Pay-as-you-Grow plan covers 100 visitors a month. Starter is $104 a month for up to 10,000 visitors, Basic $209 for 25,000 and Standard $368 for 50,000, plus $12 per extra 1,000 visitors, with a 14-day trial.
• Best for: Shopify stores with steady traffic, where saving sales matters more than deflecting tickets.
• Watch out for: the bill follows traffic, so a burst of paid visitors can raise it even if few of them chat. Model it on visitors, not tickets.

Alhena AI: Best for Guided Shopping in Big Catalogs

Alhena, formerly Gleen, sells an AI shopping and support concierge. Its Shopify listing says it guides product discovery, recommends products, answers questions before and after purchase and routes shoppers to your team, and that it is built for fashion, beauty, jewelry and home brands. Alhena also sells a product that tracks how your items show up in AI search.

• Works with: Shopify, WooCommerce and Salesforce Commerce Cloud, and helpdesks including Zendesk, Gorgias, Intercom and Gladly.
• Pricing: by AI conversation. Alhena's pricing page lists Free at 25 conversations a month, then Essentials at $199, Growth at $499 and Scale at $999 a month billed annually, for 200, 550 and 1,200 conversations, with $1.20 per extra conversation.
• Best for: large catalogs where shoppers need help with size, material or style.
• Watch out for: plans count credits, not resolutions. Alhena says a credit is used whenever its AI resolves or assists a conversation, so assisted chats that end with your team still count. Only spam, irrelevant queries and immediate handoffs are free. Plans below Enterprise cap the knowledge base at 50,000 URLs or SKUs.

3. On-Site Search and Discovery: Algolia

Algolia is search infrastructure, not a chat widget. It indexes your catalog and returns results as shoppers type, with AI ranking on its Grow Plus plan. Its Agent Studio lets developers build shopping agents, such as an AI search mode or product page questions, on the same index. The pricing table lists Agent Studio on every plan, but Algolia's LLM provider docs say production agents need your own large language model provider, which bills you per token.

• Works with: Shopify, Adobe Commerce and Magento Open Source, BigCommerce, Salesforce Commerce Cloud and commercetools.
• Pricing: Algolia's pricing page lists Free at 10,000 search requests and 50,000 records a month. After 10,000 requests, Grow charges $0.50 and Grow Plus $1.75 per 1,000 more, plus $0.40 per 1,000 records past 100,000. NeuralSearch, its meaning-based search, needs the top plan and an annual contract.
• Best for: large or technical catalogs where search drives sales, with a developer to set it up.
• Watch out for:agents can be tested free on OpenAI's GPT-4.1, but production model costs are yours. Grow Plus search requests cost 3.5 times the Grow rate.

4. Merchant Back Office Agents

These agents work for you and your staff, not your shoppers.

Shopify Sidekick: Best Free Start for Shopify Merchants

Sidekick is Shopify's AI assistant inside the admin. Shopify's help center says it can analyze data, manage orders, edit products, create content and generate custom apps, and that it presents changes for your review first. It is part of Shopify Magic, the AI features Shopify says are free regardless of plan.

• Works with: Shopify stores. Staff can use it within their admin permissions.
• Pricing: included with your Shopify plan. Features and usage limits vary by plan.
• Best for: owners and staff who want faster reports, bulk edits and content without adding a tool.
• Watch out for: it is not a customer service agent. Shopify's setup guide says Sidekick can't talk to your customers or handle support conversations, and isn't available in the admin on a mobile browser.

Commerceflo (FactoryJet's Own Product): For Multi-Channel Operations

Disclosure: Commerceflo is our product, so weigh this section with that in mind. We describe it only from our Commerceflo product page and commerceflo.ai. It is an AI commerce operator in early access that runs a DTC store, B2B portals, marketplace listings and retail point of sale on one data model. Eight named agents watch the business and propose a worked fix. Inventory, Pricing, Content, Customer and Growth make changes after you approve them, or under an auto-approve rule you set. Fulfillment, Financial and Compliance only flag issues.

• Works with: commerceflo.ai lists connections including Amazon, Walmart, eBay, TikTok Shop, WooCommerce, BigCommerce, Magento and Squarespace, plus NetSuite, SAP, QuickBooks, Salesforce, Klaviyo, ShipBob, Linnworks and Cin7. Confirm your exact connector first.
• Pricing: not published. commerceflo.ai describes a one-time implementation plus a monthly subscription, both scoped on a call, with no revenue share.
• Best for: brands selling on several channels that want one system in place of a stack of apps.
• Watch out for: it is new, and commerceflo.ai says it has no customer logos or metrics to show yet. Our own page says it is the wrong choice if you sell mainly through one store with simple rules, need proven results first, want the largest app ecosystem, or cannot change core systems this year. Checkout inside ChatGPT, Gemini or Claude is still listed as in development.

What One Month of Tickets Costs Under Each Pricing Model

Every vendor bills a different unit, so here is one hypothetical month run through the published prices above. It is an illustration with stated assumptions, not a quote. The store: a US Shopify brand with 6,000 support conversations a month, 3,000 of them fully resolved by AI.

Now a custom agent. Its main running cost is model usage, billed per token, a chunk of text about the size of a short word. Assume each conversation takes three model calls that read 24,000 input tokens in total (instructions, policies, messages and order data) and write 1,500 output tokens. The agent reads all 6,000 conversations, not just the resolved ones. At Anthropic's API prices on September 17, 2026, with no caching discount:

Sonnet 5 in full: 24,000 input tokens at $2 per million is $0.048, plus 1,500 output tokens at $10 per million is $0.015. That makes $0.063 a conversation and $378 a month. Prompt caching can cut the input part, since re-reading cached text costs a tenth of the input price. Anthropic charges 1.1 times its standard token prices for US-only processing.

The gap between Fin's $2,970 and $378 is $2,592 a month, about $31,100 a year. That gap has to pay for the build, hosting, monitoring, the helpdesk your team still uses for handoffs, and the engineer who keeps order, return and ERP connections working. Our guide to what an AI agent costs covers build costs.

At a tenth of the volume, 300 resolutions cost $297 a month on Fin against a $37.80 model bill. A gap of about $3,100 a year rarely pays for a build, so rent. At double the volume in November and December, Fin's line doubles to $5,940 a month, so price your busiest month, not an average one.

Build vs Buy: When a Custom Ecommerce AI Agent Wins

An Off-the-Shelf Agent Is Enough When

• Your platform is well supported, and most questions are about order status, returns, shipping and product details.
• Answers live in your store platform and help center, not in an ERP (the system that runs inventory, orders and finance) or a 3PL (an outside warehouse that ships for you).
• Your return and refund rules fit the vendor's settings.
• Volume is low or moderate, so per-resolution fees stay below build and upkeep costs.
• You want it live this month. Gorgias and Fin both say setup can take under an hour.

The Middle Path: Rent the Agent, Build the Actions

Many gaps close without replacing the vendor. Gorgias supports custom actions that call other apps, Fin uses data connectors to update external systems, and Klaviyo has custom tools in open beta. If one missing action is the only problem, a small integration costs less than a new agent. Our AI workflow automation team builds those connections.

A Custom Agent Wins When

• Answers depend on several systems.“Where is my order?” is easy when Shopify knows. It is harder when the truth sits in a 3PL's warehouse system, a backorder lives in NetSuite, or an OMS (order management system) splits the shipment. A custom agent checks each system and gives one answer. Our guide to AI agents inside NetSuite, SAP and Epicor covers the ERP side of that wiring.
• B2B pricing decides the reply. Contract prices, net terms, minimum order quantities and account catalogs rarely fit a DTC support tool, and Shopify says B2B-only products aren't supported in its agentic storefronts. A custom agent can build quotes from your ERP data, as our RFQ-to-ERP agent architecture shows.
• Returns or warranty rules are yours alone. Serial number checks, proof of purchase, condition grading and partial refunds by product line are code, not a setting, and a custom agent enforces them as hard limits.
• You need to own the data path: which model provider, where logs live, how long you keep them and whether processing stays in the US.
• Per-resolution fees outgrow the build. When a year of fees costs more than the build plus a year of upkeep, owning is cheaper.

If several apply, look at custom AI agent development or, for support work, AI customer support agents. If you only need a chatbot that answers without acting on your systems, AI chatbot development is the lighter option. To see what a Shopify build involves, Shopify's docs show how to build a storefront AI agent that searches products, answers policy questions and manages carts through MCP (Model Context Protocol, a standard way to give an AI model tools).

How to Choose an Ecommerce AI Agent: A 10-Step Checklist

1. Count one month of conversations by type: order status, returns, address changes, product questions and B2B requests.
2. Pick the job first: support, shopping help, search or back office. Most stores need a tool per job, not one agent for everything.
3. Confirm platform fit in the vendor's docs, not its homepage. Gorgias, for example, sets up AI Agent per Shopify store and connects Magento from its Pro plan.
4. Turn the billing unit into a monthly number at normal volume and in your busiest month.
5. Read what counts as billable. Fin bills Procedure handoffs as outcomes, and Gorgias counts each automated interaction as a ticket too.
6. List the actions you need, such as refunds, cancellations, address changes and return labels, and check each is on the plan you will buy.
7. Set guardrails before launch: which request types the agent owns, refund and discount limits, and a handoff that passes the full conversation to a person.
8. Check data handling: whether your data trains models, where it is stored and how it is deleted. Gorgias, for instance, hosts data in the US, the EU and Australia.
9. Trial it on real conversations. Gorgias offers 7 days, Fin and Rep AI 14 days, and Klaviyo 50 free conversations. Measure resolution rate, escalation rate, customer satisfaction and cost per resolved conversation.
10. Set your build trigger up front: the monthly fee, or the missing ERP, 3PL or B2B action, that would make a custom agent worth scoping.

Also plan for shoppers who find products inside AI assistants. Shopify's agentic storefronts share eligible products with ChatGPT, Google AI Mode and Gemini, Microsoft Copilot and Meta by default. That is a separate project, covered on our agentic commerce page and in our guide to autonomous commerce agents.

Checked on September 17, 2026 against vendor pages from Gorgias, Fin and Intercom, Zendesk, Klaviyo, Rep AI, Alhena and Algolia, Shopify's help center and developer docs, and Anthropic's API pricing, all linked above. Prices change often, so confirm on each vendor's site before you buy. Commerceflo details come from factoryjet.com/commerceflo and commerceflo.ai.