Live captioning software is an application that converts spoken words into on-screen text in real time. It uses streaming speech recognition AI to transcribe audio with under-2-second latency. Top live captioning software in 2026 includes StreamTranslate, Otter.ai, and Web Captioner.
Audio is captured from a microphone, sent to a streaming ASR engine (like Deepgram), and transcribed into text continuously. The text is displayed in a caption overlay or stream broadcast.
Low latency (under 2s), high accuracy (under 10% WER), multi-language support, translation options, OBS integration.
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