SonicCaption

SonicCaption is a Chrome and Edge browser extension designed to provide real-time bilingual subtitles and translations for any video or online audio content. It addresses the needs of language learners and non-native professionals who engage with videos, streams, online classes, or meetings in another language, offering a way to follow spoken content without manual uploads or interruptions. The tool overlays live subtitles and their translations directly onto any browser tab that plays audio, including platforms such as YouTube, Netflix, Twitch, Zoom, and Google Meet.

Key features include dual subtitles that display both the original audio and its translation simultaneously, with subtitles appearing in approximately half a second to accommodate live streams and meetings. Users can select their source and target languages and begin captioning with a single click. SonicCaption operates entirely within the browser, ensuring that audio remains local to the user's device and only text segments are processed, which emphasizes privacy. The extension does not require file uploads or exports, simplifying the workflow for users who want immediate access to captions while watching or participating in content.

The platform is intended for a variety of real-world scenarios: following foreign-language streams, staying engaged during online meetings, catching details in educational videos, and practicing language skills without needing to pause or rewind. SonicCaption is suitable for individual learners, professionals in multilingual environments, and teams needing centralized management of captioning resources.

SonicCaption offers a range of pricing plans based on monthly usage minutes. A free plan provides 20 minutes per month with access to core features and standard caption quality. Paid plans include Starter, Pro, Power, and Ultra, scaling up to 120 hours per month, with increasing levels of caption quality, support, and usage hours. There is also a custom Team/Enterprise plan with shared hours, central administration, and dedicated account support. All plans can be managed and canceled via Stripe, and users select their plan within the extension after installation.