Inworld TTS 1.5 Mini is Inworld's text to speech model. A compact, low-latency variant of Inworld's TTS 1.5 series, optimized for fast voice synthesis in real-time interactive applications.
Specifications
Canonical IDinworld-tts-1-5-mini
TypeText to Speech
StatusActive
CreatorInworld
Input ModalitiesText
Output ModalitiesAudio
Benchmarks
Elo Rating
#96

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
Inworld TTS 1.5 Mini————Current
Inworld Realtime TTS 1.5 Mini————Available
Realtime TTS 1.5 Mini————Available

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Inworld Realtime TTS 2—————
Realtime TTS-2—————
Realtime TTS-2 Research Preview—————
Soniox TTS 2 RT—————
Step TTS 2—————
StyleTTS 2—————
TTS HD 2.5—————
VoxCPM2—————
TTS 1——$15.00—
TTS 1 HD——$30.00—

Model IDs

inworld-tts-1-5-mini
tts-1-5-mini