Async 1 Pro is Async's text to speech model. A professional-tier LLM from Async offering higher capability and quality for demanding text generation use cases.
Specifications
Canonical IDasync-1-pro
TypeText to Speech
StatusActive
CreatorAsync
Input ModalitiesText
Output ModalitiesAudio
Benchmarks
Elo Rating
1165
#86

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·

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Async 1.5 FlashFlash

Model IDs

async-1-pro
async-pro-v1-0