Inworld TTS 1.5 Max is Inworld's text to speech model. The high-quality tier of Inworld's TTS 1.5 series, offering premium voice synthesis for interactive entertainment and game character dialogue.
Specifications
Canonical IDinworld-tts-1-5-max
TypeText to Speech
StatusActive
CreatorInworld
Input ModalitiesText
Output ModalitiesAudio
Benchmarks
Elo Rating
#55

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 Max————Current
Inworld Realtime TTS 1.5 Max————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-max
tts-1-5-max