Amazon Polly
Paid
AWS's text to speech service that turns text into lifelike speech for apps.
Submagic
Paid
Adds eye-catching captions, emojis and b-roll to short videos in a few clicks.
Captions
Freemium
A mobile-first video studio with AI captions, eye contact correction and avatars.
Vizard
Freemium
Repurposes long videos into short clips and edits them through a text-based editor.
Google's API for natural-sounding speech in many languages, including its newest voice models.
Cartesia
Freemium
Ultra-fast, realistic voice AI built for real-time conversational agents.
Resemble AI
Paid
Voice cloning and text to speech with built-in deepfake detection for enterprises.
Otter.ai
Freemium
AI meeting notes and transcription that joins your calls, records and summarizes them.
Rev
Freemium
Transcription, captions and subtitles, with both AI and human-verified options.
AssemblyAI
Freemium
Speech to text APIs with speaker labels, summaries and audio intelligence features.
Deepgram
Freemium
Fast speech recognition and voice agent APIs built for real-time applications.
OpenAI Whisper
Free
OpenAI's open-source speech recognition model that handles many languages and noisy audio.
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