Quickstart
1. Register an Account
Visit the Unisound Maas Platform, click the "Login" button in the upper right corner, and log in with a mobile verification code. If it's your first time logging in, the registration will be completed automatically.

2. Developer Certification
Complete real-name verification to receive a generous resource package gift.
After logging in, go to the Account Management page, click "Real-name Verification", and fill in the required information to complete verification as an individual developer or enterprise developer.

Certification Gift Contents
| Audio Models | Vision Models | Text Models |
|---|---|---|
U2-ASR: 5 hours | U1-OCR: 5 million tokens | Unisound U2: 5 million tokens |
U2-TTS: 50,000 characters | U1-OCR-Med: 5 million tokens | U2 Flash: 5 million tokens |
U2-TTS-Clone: 20,000 characters | U2-Med: 5 million tokens | |
U2-TTS-Design: 20,000 characters | U2-RadiMed: 5 million tokens |
3. Get API Key
Security Tips
Never share your key with others or embed it in plain text in browser or client-side code.
If you suspect your key has been leaked, delete it immediately and generate a new one.
- Pay-as-you-go / model resource package: Go to "Console > Metered & Packs > API Key Management > Create API Key" to obtain your API Key.
- Token Plan: Go to "Console > Subscription Management > Token Plan" to obtain your API Key.
4. Make a Call
Text generation (OpenAI-compatible API)
OpenAI-compatible chat completions with streaming, JSON output, and tool calls
Text generation (Anthropic-compatible API)
Anthropic-compatible Messages API with streaming and multi-turn dialogue support
Real-time Speech Transcription
Long-form streaming speech transcription with multi-language and dialect support
Create Async Speech Transcription Task
Create long audio speech transcription task
Query Speech Transcription Task Status
Query speech transcription task status
Sync Speech Synthesis
WebSocket sync text-to-speech with streaming audio
Create Async TTS Task
Create async TTS task
Query TTS Task Status
Query TTS task status
Upload Clone Audio
Upload audio file to be cloned
Fast Clone
Execute voice clone
Voice Design
Design a custom voice from text prompts
Create Async Document Parsing Task
Create async document parsing task
Query Document Parsing Task Status
Query document parsing task status
Document Information Extraction and Classification
Structured extraction of image information
Upload File
Upload file to platform
List Files
Get list of uploaded files