Where each one wins
The situation where each option is the right answer.
One named strength per platform, including the case for staying exactly where you are.
Richpanel
Stated as plainly as the rest. Richpanel is a team of AI agents that runs customer service end to end, resolving conversations autonomously while your people handle the exceptions, inside the helpdesk those people work in. Choose Richpanel if the Zendesk seat stack and the resolution meter are both part of what you want gone, you want the agent to execute refunds, cancellations, order edits and subscription changes as validated, policy-bounded tool calls rather than draft text, and you want the resolution number proven on your own historical Zendesk tickets before go-live. Practical details that matter to a switcher: one-click Zendesk import brings tickets, macros, tags and users, we buy out up to 100% of your remaining contract, and the guarantee is 50% resolution in 30 days with your money back if we miss. In production that has looked like a wellness brand where AI sends 63% of every customer message and closes 529 conversations end to end with no human touch, at 4.39 out of 5 CSAT, above its own human team.[8] Where we are weaker: we are younger than Zendesk and we do not match its breadth beyond customer support, so if you are standardising one vendor across IT service management and internal help desks as well, we are the wrong shape. We have no native voice either; we integrate with Aircall, Dialpad and JustCall rather than hosting telephony. And we are the only option here that requires a migration, which is a real cost you should weigh against a layer.
Intercom Fin
The most accessible outcome price in the category, and the most deployed agent on this page. Choose Fin if you want outcome-based pricing you can read without a sales call and a low commercial floor to start: $0.99 per Fin outcome, a 50-outcome monthly minimum, "Unlimited teammates" with "No additional seat costs," and no integration, setup or platform fees.[7] Intercom also defines the outcome tightly and charges "only once per conversation, even if multiple questions are answered." The caveat for this specific audience is the one flagged above: Zendesk is not on the published helpdesk list, so verify compatibility before you plan a layer around it. If you were already considering leaving Zendesk for Intercom's own suite, note that Fin is now the product and Intercom the helpdesk beneath it, and that Salesforce has signed to acquire it, which is worth a roadmap question on your call.
Lorikeet
The rare standalone agent that publishes its prices, and it lists Zendesk. Choose Lorikeet if your tickets are complex or regulated and determinism matters more than fluency. Its Start plan is $1,500 per month at $0.95 per chat, email or SMS resolution; Scale is $4,000 per month at $0.80; routing and tagging run $0.25 to $0.30, automated QA the same, and voice resolutions up to three minutes are $1.20 to $1.50. There are no per-seat charges and no implementation or platform fees on any tier, and the commercial promise is unusually direct: "We only charge for successfully resolved tickets. If you're unhappy with how Lorikeet handled a ticket, you don't pay for that ticket."[9] Supported ticket platforms include Zendesk, Intercom, HubSpot, Front and Salesforce. Honest note on where it beats us: for a fintech or healthcare workflow that must execute the same branching procedure identically every time, its structured execution model is a better fit than a general ecommerce agent, and its published pricing beats most of this list on transparency.
Zendesk AI (stay and rebuild)
The case for not switching, which is stronger this year than last. Stay on Zendesk AI if your deployment is otherwise healthy, your resolution gap traces to a thin knowledge base rather than an inability to act, and your organisation values Zendesk's breadth and governance. The May 2026 packaging change genuinely improved the offer: agentic reasoning, multi-step procedures and external API integrations moved from the paid Advanced add-on into Suite and Support plans.[3] Zendesk is also the only vendor here whose resolution counter is documented in public in this much detail, which is a form of honesty. Two caveats to weigh against that. Its per-resolution rate is not published, so you cannot model your bill without a sales conversation. And the resolution ceiling in the field, around 10 to 20 percent on unfiltered ecommerce tickets, is well below the marketed range.[2] Our head-to-head is at Richpanel versus Zendesk.
Decagon
Genuinely one of the strongest agents in the market, and the honest reason it sits at position five is price opacity, not capability. Choose Decagon if you are an enterprise with complex, high-variance workflows, you want an agent that escalates cleanly into the Zendesk you are keeping, and you have both the budget and the internal engineering attention that an agent programme of that shape requires. It publishes no pricing page; third-party reporting puts deals in the $95K to $590K per year range with a median around $386K.[10] Two things we do not claim about Decagon, because they are not true: it does ship customer-configurable eval and QA tooling rather than keeping evaluation vendor-side, and it is very well funded, so any "will they still be here" argument does not apply. If you are already live on Decagon, its setup cost is sunk and time-to-value comparisons are irrelevant to you; the only question worth asking is what the helpdesk underneath is still costing.
Sierra
The cleanest outcome-based commercial model on this page. Choose Sierra if you want to pay strictly for completed work and can meet an enterprise floor. Sierra states plainly that "Sierra gets paid only when we complete a task for you," and that if a case is escalated or a conversation is unresolved, "in most cases, there's no charge."[11] That is a stricter promise than a counter that treats silence as success, and it is worth saying that Sierra's framing here is better than the incumbent's. It publishes no per-outcome rate, reported floors sit around six figures a year, and its own published case studies put deployment in the four to ten week range, so it is an enterprise commitment rather than a quick swap.
Ada
The enterprise-scale layer with a native Zendesk integration. Choose Ada if you are genuinely at that scale: Ada's own demo page states it is "a great fit for companies with at least 300,000 annual customer service conversations," which is a clear and useful self-qualification that saves smaller teams a wasted evaluation.[12] It publishes no pricing; third-party reporting describes an annual platform fee plus a per-resolved-interaction rate, with real deals landing well into six figures. Below that conversation volume, the platform fee alone will dominate your per-resolution math and one of the cheaper options above will serve you better.