Before committing to either Intercom Fin or HubSpot Breeze, here are the costs and catches that won't be obvious from their pricing pages.
Intercom Fin โ what to watch for
- Unpredictable monthly bills โ as your AI resolution rate improves, costs go up proportionally
- You're charged $0.99 even if the AI's answer didn't actually solve the customer's problem, as long as they didn't escalate
- Reddit users report 120% billing increases after enabling Fin (e.g. $4k to $9k/month)
- Copilot is an additional $35/agent/month on top of resolution costs
HubSpot Breeze โ what to watch for
- At ~$1/conversation, costs scale dramatically โ 10k conversations = ~$10k/month just for AI
- Credit-based system makes it hard to forecast monthly spend
- Requires an active HubSpot Service Hub subscription (~$90/month starter) โ Breeze is never standalone
- Breeze AI capabilities are relatively new and less mature than Intercom Fin or Zendesk AI
The cost nobody talks about: what happens when the AI can't answer?
Intercom Fin uses per-resolution pricing while HubSpot Breeze uses credits-based pricing. This means they handle the 'AI can't answer' scenario very differently.
Intercom Fin: Intercom Fin charges per resolution โ if a customer asks a question and gets an AI response but doesn't escalate, you're billed $0.99 regardless of whether the answer was actually helpful. If the customer does escalate to a human, you're not charged for a resolution, but you are paying for the human agent's time.
HubSpot Breeze: HubSpot Breeze consumes credits for each AI conversation, regardless of outcome. If the AI engages with a customer but can't resolve the issue, you've still consumed credits for that conversation. The credit model makes it harder to see exactly what each interaction costs.
This is why comparing headline per-resolution vs per-conversation (via credits) costs is misleading. The metric that matters isn't how much each billable event costs โ it's what each platform counts as a billable event in the first place, and whether you're paying for outcomes (successful resolutions) or activity (any AI interaction).