AI support tools bill per resolved conversation, so the bill rises exactly as the AI succeeds. Published cases include an Intercom bill going from about $119 to $854 a month, and another from $4,000 to $9,000. Command+K is prepaid instead: you buy credits up front, there is no metered overage, and nothing is auto-charged to your card.
None of this is hypothetical. Every case below is published, and linked.
Documented cases of Intercom bills multiplying without a plan change — one from roughly $119 to $854, another from $4,000 to $9,000 — driven by Fin's $0.99 outcome pricing stacked on add-ons, outbound messages and channel surcharges.
Source: ClearFeedFin infers that a conversation was resolved when the customer stops replying. Paying customers have publicly disputed how often that inference is wrong — and each wrong inference is a billable event you cannot audit.
Source: AissistIn some helpdesk stacks a single AI resolution is charged once as an AI fee and once as a ticket. Across the per-resolution category, arguments about what counts as a billable outcome are the most common source of billing friction.
Source: IntercomCredit-based tools stop responding when the balance hits zero unless auto-recharge is switched on. That turns a billing event into a customer-facing outage, and the fix is a card charge you did not approve.
Source: ApifySalesforce Agentforce launched at $2.00 per conversation — charged even when the AI fails and the conversation escalates to a human — on top of Service Cloud seats starting at $175 per user per month.
Source: Intercom| Model | Who charges this way | What makes the bill grow | Ceiling | Room to argue |
|---|---|---|---|---|
| Per resolution | Fin $0.99 · Zendesk AI $1.00–$1.50 | Every successful answer | None — the meter follows adoption | Yes — the vendor defines a resolution |
| Per conversation | Agentforce $2.00 | Every conversation, resolved or not | None | Fewer — but you pay for failures too |
| Per ticket / task | My AskAI ~$0.10 · eesel ~$0.40 | Every inbound ticket | None, plus a helpdesk subscription underneath | Rare |
| Prepaid credits | Command+K | Nothing — you spend what you bought | The credits you purchased | Nothing is billed per outcome |
Competitor pricing verified September 2026 from public sources linked above. See the full head-to-head on Fin, Zendesk AI and Chatbase.
AI Adopter includes 1,500 credits a month at $29. AI Pilot includes 6,000 at $99. One credit is one run of the default model; every model's coefficient is published and never changes silently.
You cannot run up a bill. When the allowance is spent you either top up with a pack ($10→500 · $25→1,300 · $50→2,750 · $100→6,000) or upgrade — both are decisions you make, not charges that arrive.
A low-balance alert fires while 250 credits remain. If the wallet does empty, the assistant pauses for end users until you top up — we will not charge your card to keep it running.
There is no resolution to define, infer or dispute. Credits are consumed by model runs you can see in the usage log, purchased credits stay valid for 12 months, and your first paid invoice is refundable in full for 7 days.
The Fin alternatives guide and Zendesk AI alternatives guide rank every option on price, including the ones we lose to. All head-to-head comparisons and alternatives guides are indexed too.
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