The Best Speech Recognition API in 2025: A Head-to-Head Comparison
Feb 6, 2025
Speech-to-text technology has improved dramatically in recent years, but with so many options available, which API delivers the best accuracy? In this benchmark, I test and compare the major speech recognition APIs, including cloud-based services from AWS, Google Cloud, and Microsoft Azure, two startups specializing in ASR: Assembly AI and Deepgram, the open-source OpenAI Whisper model, and Google Gemini, a large language model that can process speech input.