Respeecher

Respeecher is an AI voice company known for high-fidelity speech-to-speech (STS) voice conversion and text-to-speech (TTS) used across film, television, games, and advertising. It exposes two documented, self-service public APIs. The Voice Marketplace API (gateway.respeecher.com) provides voice discovery, speech-to-speech conversion orders, text-to-speech synthesis, calibration, recordings, projects/folders, credits, and statistics, secured with an API key. The newer Respeecher Space real-time TTS API (api.respeecher.com) streams lifelike audio in under 200ms via one-shot bytes, HTTP SSE, and a WebSocket channel, with English (en-rt) and Ukrainian (ua-rt) models, official Python and TypeScript SDKs, and LiveKit, Pipecat, Ultravox, and VAPI integrations. Bespoke, high-touch voice cloning for studios is delivered through the enterprise AI Voice Lab.

Respeecher publishes 17 APIs on the APIs.io network, including Space Real-Time TTS API, accents API, auth API, and 14 more. Tagged areas include Voice AI, Voice Cloning, Speech to Speech, Text to Speech, and Voice Conversion.

The Respeecher catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Respeecher’s developer surface includes documentation, signup flow, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.1/100 thin ▬ flat Agent 30/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessPaid
17 APIs
Voice AIVoice CloningSpeech to SpeechText to SpeechVoice ConversionReal TimeMedia and Entertainment

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 37.1/100 · thin
Contract Quality 14.5 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 10.5 / 20
Operational Transparency 0.0 / 13
Governance 2.5 / 12
Discoverability 7.4 / 10
Agent readiness — 30/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/respeecher: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 17

Individual APIs this provider publishes, each with its own machine-readable definition.

Respeecher Space Real-Time TTS API

Low-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-shot bytes (POST /tts/bytes, up to ~5,000 characters), HTTP SSE chunks...

Respeecher accents API

The accents API from Respeecher — 1 operation(s) for accents.

Respeecher auth API

The auth API from Respeecher — 3 operation(s) for auth.

Respeecher calibration API

The calibration API from Respeecher — 3 operation(s) for calibration.

Respeecher credits API

The credits API from Respeecher — 1 operation(s) for credits.

Respeecher folders API

The folders API from Respeecher — 2 operation(s) for folders.

Respeecher healtz API

The healtz API from Respeecher — 1 operation(s) for healtz.

Respeecher models API

The models API from Respeecher — 1 operation(s) for models.

Respeecher narration-styles API

The narration-styles API from Respeecher — 1 operation(s) for narration-styles.

Respeecher notes API

The notes API from Respeecher — 1 operation(s) for notes.

Respeecher orders API

The orders API from Respeecher — 2 operation(s) for orders.

Respeecher projects API

The projects API from Respeecher — 4 operation(s) for projects.

Respeecher recordings API

The recordings API from Respeecher — 9 operation(s) for recordings.

Respeecher stats API

The stats API from Respeecher — 3 operation(s) for stats.

Respeecher storage API

The storage API from Respeecher — 1 operation(s) for storage.

Respeecher tts API

The tts API from Respeecher — 1 operation(s) for tts.

Respeecher voices API

The voices API from Respeecher — 4 operation(s) for voices.

Scroll for all 17

Pricing Plans 1

Published pricing tiers and plan structures.

Respeecher Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Respeecher Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Respeecher Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Respeecher Space Real-Time TTS WebSocket API

AsyncAPI description of the Respeecher Space real-time text-to-speech WebSocket channel. A single persistent WebSocket connection carries multiple concurrent text-to-speech gene...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Respeecher API Rules

2 rules · 1 errors 1 warnings

SPECTRAL

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Respeecher Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Respeecher Agentic Access

54 operations · 31 acting

54 operations · 31 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 Documentation
Documentation
 OpenAPI
OpenAPI

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: respeecher
url: https://raw.githubusercontent.com/api-evangelist/respeecher/refs/heads/main/apis.yml
name: Respeecher
kind: company
description: Respeecher is an AI voice company known for high-fidelity speech-to-speech (STS) voice conversion and text-to-speech
  (TTS) used across film, television, games, and advertising. It exposes two documented, self-service public APIs. The Voice
  Marketplace API (gateway.respeecher.com) provides voice discovery, speech-to-speech conversion orders, text-to-speech synthesis,
  calibration, recordings, projects/folders, credits, and statistics, secured with an API key. The newer Respeecher Space
  real-time TTS API (api.respeecher.com) streams lifelike audio in under 200ms via one-shot bytes, HTTP SSE, and a WebSocket
  channel, with English (en-rt) and Ukrainian (ua-rt) models, official Python and TypeScript SDKs, and LiveKit, Pipecat, Ultravox,
  and VAPI integrations. Bespoke, high-touch voice cloning for studios is delivered through the enterprise AI Voice Lab.
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/respeecher.png
tags:
- Voice AI
- Voice Cloning
- Speech to Speech
- Text to Speech
- Voice Conversion
- Real Time
- Media and Entertainment
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.19'
apis:
- aid: respeecher:respeecher-space-realtime-tts-api
  name: Respeecher Space Real-Time TTS API
  tags:
  - Real Time
  - Streaming
  - WebSocket
  - Text to Speech
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://space.respeecher.com/docs
  baseURL: https://api.respeecher.com/v1/public/tts/en-rt
  properties:
  - url: https://space.respeecher.com/docs/quickstart
    type: Documentation
  - url: https://space.respeecher.com/docs/api/tts/web-socket
    type: APIReference
  - url: asyncapi/respeecher-asyncapi.yml
    type: AsyncAPI
  - url: https://www.respeecher.com/real-time-tts-api
    type: SignUp
  description: Low-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-shot
    bytes (POST /tts/bytes, up to ~5,000 characters), HTTP SSE chunks (POST /tts/sse), and a bidirectional WebSocket channel
    (wss://api.respeecher.com/v1/public/tts/en-rt, GET /tts/websocket) that streams input text and output audio keyed by context_id.
    English (en-rt) and Ukrainian (ua-rt) models, X-API-Key auth, official Python and TypeScript SDKs, and LiveKit, Pipecat,
    Ultravox, and VAPI integrations.
- aid: respeecher:respeecher-accents-api
  name: Respeecher accents API
  description: The accents API from Respeecher — 1 operation(s) for accents.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - accents
  properties:
  - type: OpenAPI
    url: openapi/respeecher-accents-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-auth-api
  name: Respeecher auth API
  description: The auth API from Respeecher — 3 operation(s) for auth.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/respeecher-auth-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-calibration-api
  name: Respeecher calibration API
  description: The calibration API from Respeecher — 3 operation(s) for calibration.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - calibration
  properties:
  - type: OpenAPI
    url: openapi/respeecher-calibration-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-credits-api
  name: Respeecher credits API
  description: The credits API from Respeecher — 1 operation(s) for credits.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - credits
  properties:
  - type: OpenAPI
    url: openapi/respeecher-credits-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-folders-api
  name: Respeecher folders API
  description: The folders API from Respeecher — 2 operation(s) for folders.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - folders
  properties:
  - type: OpenAPI
    url: openapi/respeecher-folders-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-healtz-api
  name: Respeecher healtz API
  description: The healtz API from Respeecher — 1 operation(s) for healtz.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - healtz
  properties:
  - type: OpenAPI
    url: openapi/respeecher-healtz-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-models-api
  name: Respeecher models API
  description: The models API from Respeecher — 1 operation(s) for models.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - models
  properties:
  - type: OpenAPI
    url: openapi/respeecher-models-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-narration-styles-api
  name: Respeecher narration-styles API
  description: The narration-styles API from Respeecher — 1 operation(s) for narration-styles.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - narration-styles
  properties:
  - type: OpenAPI
    url: openapi/respeecher-narration-styles-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-notes-api
  name: Respeecher notes API
  description: The notes API from Respeecher — 1 operation(s) for notes.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - notes
  properties:
  - type: OpenAPI
    url: openapi/respeecher-notes-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-orders-api
  name: Respeecher orders API
  description: The orders API from Respeecher — 2 operation(s) for orders.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - orders
  properties:
  - type: OpenAPI
    url: openapi/respeecher-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-projects-api
  name: Respeecher projects API
  description: The projects API from Respeecher — 4 operation(s) for projects.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - projects
  properties:
  - type: OpenAPI
    url: openapi/respeecher-projects-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-recordings-api
  name: Respeecher recordings API
  description: The recordings API from Respeecher — 9 operation(s) for recordings.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - recordings
  properties:
  - type: OpenAPI
    url: openapi/respeecher-recordings-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-stats-api
  name: Respeecher stats API
  description: The stats API from Respeecher — 3 operation(s) for stats.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - stats
  properties:
  - type: OpenAPI
    url: openapi/respeecher-stats-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-storage-api
  name: Respeecher storage API
  description: The storage API from Respeecher — 1 operation(s) for storage.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - storage
  properties:
  - type: OpenAPI
    url: openapi/respeecher-storage-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-tts-api
  name: Respeecher tts API
  description: The tts API from Respeecher — 1 operation(s) for tts.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - tts
  properties:
  - type: OpenAPI
    url: openapi/respeecher-tts-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
- aid: respeecher:respeecher-voices-api
  name: Respeecher voices API
  description: The voices API from Respeecher — 4 operation(s) for voices.
  humanURL: https://docs.respeecher.com/endpoints-reference/
  baseURL: https://gateway.respeecher.com
  tags:
  - voices
  properties:
  - type: OpenAPI
    url: openapi/respeecher-voices-api-openapi.yml
  - type: Documentation
    url: https://docs.respeecher.com/
  - type: APIReference
    url: https://docs.respeecher.com/endpoints-reference/
  - type: Documentation
    url: https://www.respeecher.com/speech-to-speech
  - type: Documentation
    url: https://www.respeecher.com/api
common:
- type: AgenticAccess
  url: agentic-access/respeecher-agentic-access.yml
- type: DomainSecurity
  url: security/respeecher-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/respeecher
- type: Website
  url: https://www.respeecher.com
- type: Documentation
  url: https://docs.respeecher.com/
- type: Documentation
  url: https://space.respeecher.com/docs
- type: SignUp
  url: https://marketplace.respeecher.com/account
- type: Plans
  url: plans/respeecher-plans-pricing.yml
- type: RateLimits
  url: rate-limits/respeecher-rate-limits.yml
- type: FinOps
  url: finops/respeecher-finops.yml
- type: OpenAPI
  url: https://gateway.respeecher.com/api/openapi.json
- url: https://www.respeecher.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com