On-Premise Speech-to-Text: Which STT API Offers True Data Control?

When considering speech-to-text (STT) deployment with strict data control, the options for on-premise solutions are limited, highlighting the need for careful vendor selection. This article examines how providers like Deepgram, Speechmatics, AssemblyAI, AWS, and Google Cloud handle self-hosted deployments, focusing on their capacity to maintain data within user-controlled environments. Key distinctions include Speechmatics' strong air-gap capabilities and Deepgram's detailed self-hosting documentation, while AWS and Google Cloud are more cloud-oriented. The discussion emphasizes the critical need for enterprise agreements in self-hosted setups, as well as the importance of compliance certifications such as HIPAA and FedRAMP. Additionally, it explores the trade-offs between using open-source alternatives and managed self-hosted options, underscoring the operational challenges and potential benefits of each approach.