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: Podcastle
providerId: podcastle
created: '2026-06-21'
modified: '2026-06-21'
reconciled: false
tags:
- AI
- Audio
- Text to Speech
- Voice Cloning
- Podcasting
- Rate Limiting
- Quotas
- Throttling
description: >-
  The Async Voice API behind Podcastle enforces per-account rate limits and
  returns HTTP 429 with a RATE_LIMIT_EXCEEDED error code when limits are
  exceeded. The published documentation surfaces the throttling response and
  error model but does not list specific per-account RPM, concurrency, or
  per-hour caps. Consumer platform usage is governed instead by monthly AI
  credits and transcription-hour allowances per subscription tier. Specific
  numeric limits are not reconciled in this artifact.
notes: >-
  Verify concrete per-account request and concurrency limits in the Async
  developer console on reconciliation. Consumer-platform throughput is bounded
  by AI credits and transcription hours per plan rather than by request-rate
  limits.
sources:
- https://docs.async.com/welcome-to-async-voice-api-990330m0
- https://docs.async.com/list-voices-16699698e0
- https://async.com/pricing
responseCodes:
  throttled: 429
limits:
- name: Requests Per Account
  scope: account
  metric: requests
  limit: see provider documentation
  notes: Per-account request limits enforced by the Async Voice API; exceeding them returns HTTP 429 RATE_LIMIT_EXCEEDED.
- name: AI Credits
  scope: account
  metric: credits
  limit: per subscription tier (10 lifetime free, 450/1200/3000 monthly)
  notes: Consumer platform generative actions consume monthly AI credits per plan; credits reset monthly and are non-refundable once used.
- name: Transcription Hours
  scope: account
  metric: hours
  limit: per subscription tier (1 lifetime free, 10/25 monthly)
  notes: Transcription is capped per plan on the consumer platform.
policies:
- name: Tiered Limits
  description: Allowances and limits increase across Free, Essentials, Pro, Teams, and Business tiers, and across the Voice API pay-as-you-go and enterprise plans.
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter and retry after receiving HTTP 429 RATE_LIMIT_EXCEEDED responses.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com