StepFunWeights not listed·Not published context·— params
StepAudio 3 TTSstepfun/stepaudio-3-tts
StepAudio 3 TTS converts text into speech with controllable delivery and streaming output. It offers voice synthesis and a separately billed voice-cloning operation.
Availability and billing notes
Reviewed September 21, 2026 · check the linked provider documentation for later changes.
USD $0.36 per 10,000 characters for synthesis; successful production voice cloning costs $1.50 per voice. HTTP speech synthesis: POST /v1/audio/speech; streaming synthesis: WebSocket /v1/realtime/audio.
Capabilities
- speech_generation
- voice_cloning
Technical specs
- Context
- Not published
- Max output
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- Parameters
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- Release
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- Training cutoff
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- License
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Similar models
Compare with
- StepAudio 3 TTS vs Qwen3.8 LiveTranslate Flash RealtimeComparison planned — not yet published
- StepAudio 3 TTS vs StepAudio 3 Gen PreviewComparison planned — not yet published
- StepAudio 3 TTS vs StepAudio 3 Realtime PreviewComparison planned — not yet published
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