Fin vs Sierra

Fin

Fin is the most mature of the per-resolution support agents, with three years of production use and the tooling, simulations, regression tests, QA, that teams need before letting an agent touch refunds. The $0.99-per-outcome model is attractive when deflection is high and unattractive when the agent resolves little, and the definition of an outcome is what you negotiate over. Running it on Zendesk or Salesforce avoids Intercom's seat fees but imposes a 50-outcome monthly floor; small support teams with a few hundred tickets a month should model both before signing.

Pros

• +Pays per resolved outcome rather than per seat, with a published $0.99 rate (15 October 2026)
• +Works on Intercom and on Salesforce, Zendesk, HubSpot and Freshdesk
• +Can act through Procedures, APIs, data connectors and MCP, not only answer
• +Simulation, regression testing, QA and observability tools before and after changes go live
• +14-day trial with unlimited outcomes and no card

Cons

• −Outcome definitions and the $9.99 qualification charge make the effective price harder to model than a seat fee
• −50-outcome monthly minimum when used with a third-party helpdesk
• −Operator, Copilot and Voice are separate charges on top of the per-outcome rate
• −Company rebrand from Intercom to Fin in 2026 means documentation and contracts still carry both names

Sierra

Sierra is the enterprise end of the support-agent market: the pitch is not a chatbot but an agent that can actually change an order or a policy inside your systems, priced on what it resolves. The customer list and the certification wall are real signals that large regulated companies have put it in front of their users. It is a procurement, not a purchase - no public price, no trial, and an integration project before anything goes live - so a company without a sizeable support operation has nothing to buy here.

Pros

• +Agents take actions in order, billing and account systems, not just answer questions
• +One agent runs across chat, SMS, WhatsApp, email, voice and ChatGPT
• +Outcome-based pricing aligns the bill with resolutions
• +Ghostwriter drafts agents from existing SOPs and transcripts, and the founders' track record is unusually strong

Cons

• −No public pricing, trial or self-serve path
• −Outcome pricing needs a contract definition of 'resolved' that favours neither side - read it closely
• −Integration with core systems is a project with real lead time
• −Vendor lock-in is high once customer memory and policies live in its context engine

Is Fin cheaper than Sierra?

Fin starts at $0.99/request; Sierra prices on request, so a quote is the only way to compare.

Which has a public API, Fin or Sierra?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.