OfflineTTS is Free
Every feature, every voice, every language — completely free. No subscriptions, no API keys, no usage limits, no hidden fees.
$0
always
Text to Speech
- ✅ 98 voice options and styles across 10 TTS languages
- ✅ 4 engines: Kokoro, Kitten, Piper, Supertonic
- ✅ Unlimited generation
- ✅ WAV and MP3 export
- ✅ Works offline
- ✅ No API key needed
Speech to Text
- ✅ 99 languages supported
- ✅ Word-level timestamps
- ✅ 3 model sizes (Tiny/Base/Small)
- ✅ TXT, SRT, VTT export
- ✅ Streaming transcription
- ✅ Works offline
How Can It Be Free?
OfflineTTS runs AI models directly on your device using WebGPU or WebAssembly. There are no server costs for speech generation or transcription because your hardware does the work. The browser app is static, and the AI work runs locally on your hardware, so operating costs stay low. We keep OfflineTTS free by keeping the product lightweight and direct.
What You'll Never Pay For
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No Subscriptions
No monthly or annual plans
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No Per-Character Fees
Generate unlimited speech
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No API Keys
Just open and use