EU Startups Should Measure Speech-to-Text APIs by Cost Per Accepted Minute, Not List Price

A technical guide for EU startups argues that choosing a speech-to-text API based solely on published per-minute rates is misleading and potentially costly. The author proposes evaluating vendors through a controlled test that measures the actual invoiced cost divided by accepted source minutes — audio that produces output meeting the product's specific quality threshold. Candidates must pass four gates covering transcript quality, execution reliability, operational latency, and approved data-handling compliance before any cost comparison is made. For EU deployments, the piece emphasizes that data privacy requirements — including processing location, retention, and deletion paths — must be formally approved before testing begins, not treated as a formality. The framework prioritizes a replicable, auditable benchmark over a simple price spreadsheet, warning that hidden retry costs and rejected transcripts can make a cheap-looking vendor expensive in practice.