Soniox TTS 2 RT is Soniox's text to speech model. A real-time TTS model from Soniox optimized for low-latency streaming speech synthesis in live voice applications.
Specifications
Canonical IDsoniox-tts-2-rt
TypeText to Speech
StatusActive
CreatorSoniox
Input ModalitiesText
Output ModalitiesAudio
Benchmarks
Elo Rating
#73

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text·
Image·
Audio✓
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Soniox TTS 2 RT————Current
Inworld Realtime TTS 2————Available
Realtime TTS-2————Available
Realtime TTS-2 Research Preview————Available
Step TTS 2————Available
StyleTTS 2————Available
TTS HD 2.5————Available
VoxCPM2————Available
TTS 1—$15.00—Deprecating
TTS 1 HD—$30.00—Deprecating
Inworld Realtime TTS 1.5 Max————Available

Model IDs

soniox-tts-2-rt
soniox-tts-rt-v2