Reviewed by the NexaToolkit team · Last reviewed June 2026. We rank on real resolution rate and pricing model, the two things that decide ROI. NexaToolkit may earn a commission from links on this page — it never changes what we recommend.
AI customer-support agents finally cross the line from “deflection” to genuine resolution in 2026 — the best resolve 55–70% of conversations end-to-end. But the pricing models differ wildly, and at scale that difference is enormous. Here’s how to deploy them, which platforms lead, and the cost math, with real pricing.
Best resolution + pricing: Fin by Intercom
Fin leads independent benchmarks at ~67% resolution and charges $0.99 per resolution — you pay only when it fully resolves a conversation. It’s the only AI agent backed by a native modern helpdesk, so you don’t maintain a separate platform.
The AI-native challengers: Sierra, Decagon, Lorikeet, Ada
Sierra, Decagon, Lorikeet, and Ada hit 55–70% resolution but don’t publish pricing — Sierra runs ~$150,000/year with $50k–$200k implementation. They require you to keep a separate helpdesk. Enterprise-grade, enterprise-priced.
The incumbents with AI add-ons: Zendesk, Freshdesk
Zendesk AI (Suite $115–$169/agent + $50/agent Advanced AI add-on, plus $1–$2 per resolution) bolts AI onto a ticketing platform — but ticket-platform AI typically reaches only 10–25% true resolution versus AI-native’s 55–70%. You’re paying for the helpdesk, not best-in-class AI.
The pricing math at scale
At 100,000 monthly resolutions, the per-resolution gap is huge: Fin at $0.99 vs Zendesk at ~$1.50 is $51,000/month — $612,000/year. The pricing model, not just the sticker, decides cost at volume.
AI support agents compared
| Platform | Pricing | Resolution | Own helpdesk? |
|---|---|---|---|
| Fin (Intercom) | $0.99/resolution | ~67% | Yes (native) |
| Sierra | ~$150k/yr + impl | 55–70% | No |
| Decagon / Lorikeet / Ada | Custom | 55–70% | No |
| Zendesk AI | $115–$169/agent + add-on | 10–25% | Yes |
A real scenario
A growing SaaS handling 20,000 support conversations a month: Fin at $0.99/resolution resolves ~67% (~13,400) for roughly $13,300/month — and only bills for actual resolutions, not attempts. Bolting Zendesk’s AI add-on onto its ticketing reaches far lower resolution at a higher per-resolution rate. Unless you’re committed to an enterprise platform with custom needs, Fin’s outcome-based pricing and native helpdesk is the value play. Deploy it on your top-volume, repetitive ticket types first, keep humans on the complex 33%.
Frequently asked questions
What’s the best AI customer support agent?
Fin by Intercom leads on resolution (~67%) with outcome-based $0.99/resolution pricing and a native helpdesk. Sierra, Decagon, and Lorikeet match resolution but are enterprise-priced and need a separate helpdesk.
How much do AI support agents cost?
Fin charges $0.99 per resolved conversation; Zendesk adds ~$50/agent plus $1–$2/resolution to its $115+ suite; AI-native enterprise tools (Sierra ~$150k/yr) use custom pricing. At scale the per-resolution model dominates cost.
Do AI agents really resolve tickets, or just deflect?
The best AI-native platforms (Fin, Sierra, Decagon, Lorikeet) genuinely resolve 55–70% end-to-end in 2026. Ticket-platform AI add-ons typically reach only 10–25% true resolution.
More: see our AI agent platforms compared and autonomous AI agents explained.
