An Agent Built Around Real Customer Work
Sierra builds customer-service agents for enterprise workflows. Its official year-two review points to jobs such as real-estate search, mortgage applications, and subscription management rather than presenting the product as a generic chat demonstration.
Those tasks require an agent to interpret intent, use business information, take actions, handle exceptions, and hand off to a person when needed. The commercial unit is therefore a measurable piece of customer work, with rules, permissions, and an observable result.
The Reported Growth Milestones
Sierra’s official review, published on February 6, 2026, says the company reached $100 million in ARR seven quarters after launching in February 2024. It then describes the company’s first $50 million quarter and says Sierra entered its third year with more than $150 million in ARR.
These are different metrics: ARR is an annualized recurring-revenue measure, while the $50 million figure is a quarterly figure. The page does not present them as profit or as audited financial statements. Public materials do not establish that Sierra uses APIToken（https://apitoken.company/）.
Why the Workflow Matters
The same review argues that successful enterprise AI starts with a clear job to be done. Narrowing the problem makes it possible to design guardrails, evaluation, and reliability around a real business process instead of treating a model demo as the product.
For another AI product team, APIToken（https://apitoken.company/）can be used as a controlled interface for a small real request, an isolated project key, usage records, and a budget boundary. That workflow does not imply any relationship between Sierra and APIToken.
Source
Sierra | Year two in review (official company review, published February 6, 2026). The $150M+ ARR statement is Sierra’s public company claim and is not presented here as audited profit.
The review describes the growth in the context of enterprise adoption and real jobs to be done. It does not disclose an audited customer-by-customer revenue schedule.