Podcastle

aid: podcastle
url: https://raw.githubusercontent.com/api-evangelist/podcastle/refs/heads/main/apis.yml
name: Podcastle
kind: company
description: Podcastle is an AI audio and podcast creation platform whose developer engine, Async, exposes a low-latency Voice
  API for human-like text-to-speech, a browsable voice library, and instant voice cloning from a short audio sample. The API
  is served from https://api.async.com and authenticated with an x-api-key header plus a version header. Transcription is
  a Podcastle platform feature; no standalone transcription endpoint is documented in the public Voice API.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - url: https://podcastle.ai
    status: 308
    note: declared website redirects to https://async.com/ — a different registrable domain (podcastle.ai -> async.com), possible
      rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/podcastle.png
tags:
- Artificial Intelligence
- Audio
- Text-to-Speech
- Voice Cloning
- Podcasting
tags_raw:
- AI
- Audio
- Text to Speech
- Voice Cloning
- Podcasting
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: podcastle:transcription
  name: Podcastle Transcription
  tags:
  - Transcription
  - Speech-to-Text
  - Captions
  tags_raw:
  - Transcription
  - Speech to Text
  - Captions
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://help.podcastle.ai/en/articles/9903954-generating-and-converting-text-to-speech
  baseURL: https://api.async.com
  properties:
  - url: https://async.com/
    type: Documentation
  description: Transcription and speech-to-text are Podcastle platform features (multi-language transcription with speaker
    identification) available in the product, console, and credit-based plans. A standalone transcription endpoint is not
    documented in the public Async Voice API as of the catalog date; this entry is documented as accurately as the public
    material allows.
- aid: podcastle:podcastle-text-to-speech-api
  name: Podcastle Text to Speech API
  description: Synthesize speech from text in batch, streaming, or with word timestamps.
  humanURL: https://docs.async.com/welcome-to-async-voice-api-990330m0
  baseURL: https://api.async.com
  tags:
  - Text-to-Speech
  tags_raw:
  - Text to Speech
  properties:
  - type: OpenAPI
    url: openapi/podcastle-text-to-speech-api-openapi.yml
  - type: Documentation
    url: https://docs.async.com/text-to-speech-18760785e0
  - type: APIReference
    url: https://docs.async.com/welcome-to-async-voice-api-990330m0
  - type: Documentation
    url: https://docs.async.com/list-voices-16699698e0
  - type: Documentation
    url: https://docs.async.com/clone-voice-16699697e0
- aid: podcastle:podcastle-voices-api
  name: Podcastle Voices API
  description: Browse the voice library and create instant voice clones.
  humanURL: https://docs.async.com/welcome-to-async-voice-api-990330m0
  baseURL: https://api.async.com
  tags:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/podcastle-voices-api-openapi.yml
  - type: Documentation
    url: https://docs.async.com/text-to-speech-18760785e0
  - type: APIReference
    url: https://docs.async.com/welcome-to-async-voice-api-990330m0
  - type: Documentation
    url: https://docs.async.com/list-voices-16699698e0
  - type: Documentation
    url: https://docs.async.com/clone-voice-16699697e0
common:
- type: AgenticAccess
  url: agentic-access/podcastle-agentic-access.yml
- type: DomainSecurity
  url: security/podcastle-domain-security.yml
- type: Authentication
  url: authentication/podcastle-authentication.yml
- url: https://podcastle.ai/blog/feed/
  type: Blog
- type: LinkedIn
  url: https://www.linkedin.com/company/podcastle-ai
- type: Website
  url: https://podcastle.ai
- type: Documentation
  url: https://docs.async.com
- type: Plans
  url: plans/podcastle-plans-pricing.yml
- type: RateLimits
  url: rate-limits/podcastle-rate-limits.yml
- type: FinOps
  url: finops/podcastle-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com