Pricing model: per resolution versus flat
Fin charges a fee for each conversation it resolves, in addition to Intercom seat fees. That aligns incentives in one sense, but it means a busy month costs more and forecasting is hard. It also creates pressure to define 'resolved' generously.
Threadbox charges a flat monthly fee in GBP with a conversation allowance. Human replies and conversations the AI never answers do not count. Costs are predictable and go down, not up, as the agent gets better.
Knowledge and actions
Fin learns from Intercom Articles, synced content and, on higher tiers, external URLs and Fin Tasks for actions. Threadbox crawls any website, ingests PDFs and documents, accepts Q&A pairs and reindexes in the background whenever a source changes.
For live data, Threadbox offers plain-English custom actions and deterministic regex webhooks. Fin's actions are capable but tied to Intercom's workflow builder.
Try it on your own website
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Inbox, channels and escalation
Intercom's inbox is mature and Fin integrates tightly with it. If you need Intercom's full suite, that is a real advantage.
Threadbox's inbox is purpose-built for AI-first support: rule-based escalation on sentiment, keywords, fallback count or tool calls; human takeover with internal notes; hand-back to the agent. Web, email, WhatsApp and Slack all feed the same inbox.
Data residency and procurement
Threadbox is UK/EU hosted by default, bills in GBP with VAT invoices and signs a DPA on request. Intercom offers regional hosting on certain plans; check which applies to yours.