Gladly Sidekick vs Siena AI (2026)

Comparing Gladly Sidekick and Siena AI? Both are AI Agents & Chatbots and E-commerce Support tools in the directory, which is why buyers put them on the same shortlist. Below is a side-by-side look at how they price, what they integrate with, and when each is the better fit, so you can pick on the facts rather than either vendor's own sales page.

At a glance

Attribute Gladly Sidekick Siena AI
Pricing Paid · ~$180/seat/mo Per resolution · $750/mo + $0.90/ticket
Founded 2014 2022
Categories AI Agents & Chatbots E-commerce Support Help Desk & Ticketing AI Agents & Chatbots E-commerce Support
Integrations Shopify Salesforce Zendesk Twilio Amazon Connect Slack Gorgias Zendesk Shopify Recharge Klaviyo Kustomer

Choose Gladly Sidekick or Siena AI?

Choose Gladly Sidekick if

  • you need a full help desk and ticketing suite
  • you prefer a flat subscription to usage-based billing

Choose Siena AI if

  • you would rather pay per resolved ticket than per seat

About Gladly Sidekick

Gladly organizes support around people instead of tickets, and that one decision changes everything about how it feels. Every customer gets a single lifelong conversation thread that follows them across voice, chat, SMS, email, and social, so they never have to repeat themselves and your agents always see the full story. Sidekick, its AI agent, lives inside that thread, resolving requests using real customer context and taking genuine actions like tracking an order, starting a return, or making a change, then handing off to a human with everything already in view.

A recent standout is Sidekick on Voice, which Gladly bills as the industry's only AI voice agent powered by that lifelong, multichannel history, so a phone conversation picks up right where a chat left off. The company has kept expanding the family with Sidekick Sales for product recommendations, Sidekick Email, and versions that extend the agent onto Zendesk and Salesforce, so teams on other platforms can borrow its brain.

Gladly was founded in 2014 by Joseph Ansanelli and his co-founders, and it has leaned cheerfully into its theme, naming its pricing tiers Hero and Superhero. It is very much an enterprise product, sold largely by quote with seat minimums, and its Sidekick AI is billed per conversation or resolution on top. That positioning fits its customer base of consumer brands that treat support as a loyalty channel, including Crate and Barrel, Ulta Beauty, and Breeze Airways.

The through-line here is emotional as much as it is technical: Gladly wants every interaction to feel like talking to a company that genuinely remembers you and your history. If you sell to consumers who expect a personal, continuous relationship rather than a cold, fresh ticket every single time they reach out, Gladly and its Sidekick agent are built from top to bottom around exactly that promise.

Read the full Gladly Sidekick listing →  ·  See Gladly Sidekick alternatives →

About Siena AI

Siena AI sells empathy at scale, which sounds like marketing until you watch most support bots talk. Founded in 2022 by Romanian entrepreneurs Andrei Negrau and Lisa Popovici, whose previous startup was SMS-commerce company Cartloop, Siena builds autonomous customer service for e-commerce and consumer brands with an unusual obsession: sounding like the brand, not like a template. Its AI personas carry a defined voice and tone, and brands like Spanx, HexClad, Kitsch, Prose, and MUD WTR use them to resolve orders, subscriptions, and returns across email, chat, SMS, and social DMs without the customer feeling the switch to a robot.

Under the personality is a full commerce-support engine. Siena sits on top of the help desk you already run, Gorgias, Zendesk, Kustomer, or Gladly, and plugs into Shopify, Recharge, Klaviyo, and the rest of the DTC stack to take real actions. It claims up to 80 percent automation with CSAT going up rather than down, and rounds the platform out with automated QA scoring, a voice-of-customer topic explorer, and an AI shopping agent that recommends products mid-conversation.

The company raised a $4.7 million seed led by Sierra Ventures in 2023 and publishes its pricing shape: a $750 monthly platform fee plus about $0.90 per automated ticket, with volume pricing quoted.

Choose Siena when brand voice is a genuine business asset, the common case for DTC brands whose customers chose them partly for the vibe. If you just need cheap deflection, simpler tools cost less; if every customer touch is brand equity, Siena is the one built around that belief.

Read the full Siena AI listing →  ·  See Siena AI alternatives →

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