Deepgram offers two types of speech recognition models tailored for specific business needs. The first type is language-by-use case models, which are available in various English dialects and can transcribe one hour of pre-recorded audio in 30 seconds. These models are highly accurate, fast, and scalable, making them suitable for all applications, particularly those requiring high speeds or cost savings for on-prem use. The second type is language-specific models that cater to different languages and use cases. Deepgram's approach of using end-to-end deep learning allows for flexibility, easier optimization, and faster model building compared to traditional speech-to-text solutions.