specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Unisound
providerId: unisound
generated: '2026-07-21'
method: searched
created: '2026-07-21'
modified: '2026-07-21'
tags:
- Rate Limiting
- Artificial Intelligence
description: Unisound Token Hub enforces per-model RPM (requests per minute) and TPM
  (tokens per minute, input + output combined) limits; the API refuses further requests
  when a threshold is exceeded within the window. No rate-limit response headers are
  documented. On the legacy AI Open Platform, error code 20206 signals concurrency
  limit exceeded and 20207 quota exhausted.
sources:
- https://maas.unisound.com/docs/api/rate-limits
limits:
- name: Text models (u2, u2-med, kimi-k3, glm-5.2) requests
  scope: model
  metric: requests_per_minute
  limit: 100
  timeFrame: minute
- name: Text models (u2, u2-med, kimi-k3, glm-5.2) tokens
  scope: model
  metric: tokens_per_minute
  limit: 10000000
  timeFrame: minute
- name: Async speech transcription tasks (v1_audio_asr_tasks, u2-asr)
  scope: interface
  metric: requests_per_minute
  limit: 20
  timeFrame: minute
- name: Async speech synthesis tasks (v1_audio_speech_tasks, u2-tts / u2-tts-clone)
  scope: interface
  metric: requests_per_minute
  limit: 20
  timeFrame: minute
- name: Voice clone (v1_audio_voices_clone, u2-tts-clone)
  scope: interface
  metric: requests_per_minute
  limit: 20
  timeFrame: minute
- name: Document parsing tasks (v1_files_parser_tasks, u1-ocr) requests
  scope: interface
  metric: requests_per_minute
  limit: 20
  timeFrame: minute
- name: Document parsing tasks (v1_files_parser_tasks, u1-ocr) tokens
  scope: interface
  metric: tokens_per_minute
  limit: 100000
  timeFrame: minute
- name: OCR image extraction (v1_ocr_image_extract, u1-ocr / u1-ocr-med) requests
  scope: interface
  metric: requests_per_minute
  limit: 20
  timeFrame: minute
- name: OCR image extraction (v1_ocr_image_extract, u1-ocr / u1-ocr-med) tokens
  scope: interface
  metric: tokens_per_minute
  limit: 100000
  timeFrame: minute