Speechify

Speechify is a text-to-speech platform whose Speechify Voice API (also surfaced through Speechify Studio) synthesizes lifelike speech in 30+ languages from plain text or SSML. The REST API at https://api.sws.speechify.com offers non-streaming and streaming text-to-speech, a voice catalog, and instant voice cloning, authenticated with a Bearer API key.

Speechify publishes 2 APIs on the APIs.io network: Audio API and Voices API. Tagged areas include AI, Text to Speech, Voice, Speech Synthesis, and Voice Cloning.

Speechify’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
35.6/100 thin ▼ -6.1 Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
2 APIs
AIText to SpeechVoiceSpeech SynthesisVoice Cloning

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 35.6/100 · thin
Contract Quality 15.1 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 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/speechify: 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 2

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

Speechify Audio API

The Audio API from Speechify — 2 operation(s) for audio.

Speechify Voices API

The Voices API from Speechify — 2 operation(s) for voices.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Speechify Voice API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Speechify Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Speechify Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Speechify Finops

FINOPS

Security Posture 2

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

Speechify Authentication

http · 1 scheme

SECURITY

Speechify Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Speechify Agentic Access

5 operations · 4 acting

5 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

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: speechify
url: https://raw.githubusercontent.com/api-evangelist/speechify/refs/heads/main/apis.yml
name: Speechify
kind: company
description: Speechify is a text-to-speech platform whose Speechify Voice API (also surfaced through Speechify Studio) synthesizes
  lifelike speech in 30+ languages from plain text or SSML. The REST API at https://api.sws.speechify.com offers non-streaming
  and streaming text-to-speech, a voice catalog, and instant voice cloning, authenticated with a Bearer API key.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/speechify.png
tags:
- AI
- Text to Speech
- Voice
- Speech Synthesis
- Voice Cloning
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: speechify:speechify-audio-api
  name: Speechify Audio API
  description: The Audio API from Speechify — 2 operation(s) for audio.
  humanURL: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/speech
  baseURL: https://api.sws.speechify.com/v1
  tags:
  - Audio
  properties:
  - type: OpenAPI
    url: openapi/speechify-audio-api-openapi.yml
  - type: Documentation
    url: https://docs.sws.speechify.com/tts/overview/welcome
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/speech
  - type: Postman
    url: collections/speechify.postman_collection.json
  - type: Documentation
    url: https://docs.sws.speechify.com/docs/features/streaming
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/stream
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/voices/delete
  - type: Documentation
    url: https://docs.sws.speechify.com/v1/docs/features/voice-cloning
- aid: speechify:speechify-voices-api
  name: Speechify Voices API
  description: The Voices API from Speechify — 2 operation(s) for voices.
  humanURL: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/speech
  baseURL: https://api.sws.speechify.com/v1
  tags:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/speechify-voices-api-openapi.yml
  - type: Documentation
    url: https://docs.sws.speechify.com/tts/overview/welcome
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/speech
  - type: Postman
    url: collections/speechify.postman_collection.json
  - type: Documentation
    url: https://docs.sws.speechify.com/docs/features/streaming
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/audio/stream
  - type: APIReference
    url: https://docs.sws.speechify.com/v1/api-reference/api-reference/tts/voices/delete
  - type: Documentation
    url: https://docs.sws.speechify.com/v1/docs/features/voice-cloning
common:
- type: AgenticAccess
  url: agentic-access/speechify-agentic-access.yml
- type: DomainSecurity
  url: security/speechify-domain-security.yml
- type: Authentication
  url: authentication/speechify-authentication.yml
- type: GitHubOrganization
  url: https://github.com/SpeechifyInc
- type: LinkedIn
  url: https://www.linkedin.com/company/speechify
- type: Website
  url: https://speechify.com
- type: Documentation
  url: https://docs.sws.speechify.com
- type: Plans
  url: plans/speechify-plans-pricing.yml
- type: RateLimits
  url: rate-limits/speechify-rate-limits.yml
- type: FinOps
  url: finops/speechify-finops.yml
- url: https://speechify.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com