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Murf combines a browser voiceover editor with a speech API. In the studio you paste a script, assign a voice to each paragraph, adjust pitch, pace and emphasis, then export audio for video or e-learning. It offers over 200 voices across 30+ languages, plus AI dubbing for existing footage. The API exposes text-to-speech billed per 1,000 characters, speech-to-text at $0.24 an hour, voice changing and translation, with $10 of trial credit. Studio plans start at Creator; Business adds 96 hours of generation, 48 hours of transcription and a business license for teams.
Synthesia is built around studio-style videos made by an on-screen presenter. You choose from a library of stock avatars or record a personal one, type or paste a script, and the platform generates the footage with synced speech and gestures. Slide decks, video clips and images can be placed into scenes, and the same video can be dubbed into more than 140 languages with lip sync. Interactive branches, quizzes and SCORM export suit staff training as much as marketing clips. Editing happens in the browser, with brand kits and shared workspaces on higher tiers. The free plan covers ten minutes of video a month with a watermark.