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Voice AI research lab offering emotionally intelligent speech models and APIs for developers building empathic voice applications.
Free Chrome extension that reads aloud webpages, Google Docs, PDFs, and ebooks in 60+ languages with premium voice upgrades.
Text-to-speech and voice-typing assistant that reads PDFs and web pages aloud and dictates text across apps, for readers and multitaskers.
Free browser-based text-to-MP3 converter using Amazon Polly voices across 28+ languages with SSML controls.
Text-to-speech generator for creators and educators who want a large multilingual voice library with emotional tone control.
No public pricing
No public pricing
No public pricing
Free trial available
- ✦Empathic, emotionally intelligent voice models
- ✦Human-feedback and evaluation APIs
- ✦Open-source models and datasets
- ✦Coverage of 50+ languages and dozens of emotions
- ✦Expression measurement and speech tooling
- ✦Text-to-speech reading across webpages, Docs, PDFs, and email
- ✦Support for 60+ languages and 100+ voices
- ✦Adjustable reading speed, pitch, and volume
- ✦Background listening while browsing
- ✦Highlighting of text as it's read aloud
- ✦Minimal permissions with no data tracking claimed
- ✦1,000+ natural-sounding AI voices in 60+ languages
- ✦Adjustable playback speed up to 5x
- ✦Text highlighting synced to audio
- ✦Scan-and-listen photo-to-speech
- ✦Voice dictation/typing across apps
- ✦AI podcast generation from documents
- ✦Voice AI assistant for Q&A on read content
- ✦Cloud storage integrations (Drive, Dropbox, OneDrive)
- ✦Text-to-MP3 conversion powered by AWS Polly
- ✦28+ languages and multiple regional accents/voices
- ✦SSML tags for pauses, emphasis, speed, and pitch
- ✦Multi-speaker conversation formatting
- ✦Daily free character limit (~3,000 characters)
- ✦450+ AI voices across 120+ languages and accents
- ✦Adjustable pitch, speed, and emotional delivery
- ✦Voice options across child, adult, and elderly age ranges
- ✦Commercial usage rights included on paid plans
- ✦Free account available to test voices before purchase
- →Building empathic voice assistants
- →Measuring emotional expression in speech
- →Running human evaluations of voice models
- →Adding emotional intelligence to apps
- →Language learners listening while reading text
- →People with reading disabilities or visual impairment
- →Multitasking users listening to articles or documents hands-free
- →Editors and writers catching errors by hearing their drafts read aloud
- →Listening to long articles, PDFs or emails hands-free
- →Studying by having textbooks or lecture notes read aloud
- →Dictating text faster than typing across apps
- →Turning documents into podcast-style audio
- →Reducing eye strain from extensive reading
- →Creating narration for e-learning or presentations
- →Adding accessible audio to websites
- →Producing quick voiceovers for YouTube videos
- →Generating multi-character dialogue audio clips
- →Creating podcast or video voiceovers
- →Producing multilingual audio content
- →Generating character voices for games or animation
- →Building lesson or educational audio content