Google Cloud Text-To-Speech website screenshot

Google Cloud Text-To-Speech

Google Cloud Text-to-Speech converts text or Speech Synthesis Markup Language (SSML) input into audio data of natural human speech. It provides access to hundreds of voices across multiple languages and variants, powered by DeepMind's WaveNet technology and Google's neural network models.

Google Cloud Text-To-Speech publishes 2 APIs on the APIs.io network: Text:synthesize API and Voices API. Tagged areas include Audio, Google Cloud, Machine Learning, Speech Synthesis, and Text-To-Speech.

The Google Cloud Text-To-Speech catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Google Cloud Text-To-Speech’s developer surface includes developer portal, getting-started guide, documentation, authentication, pricing, support, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
61.0/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
2 APIs
AudioGoogle CloudMachine LearningSpeech SynthesisText-To-Speech

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 61.0/100 · strong
Contract Quality 16.1 / 25
Developer Ergonomics 10.0 / 20
Commercial Clarity 14.2 / 20
Operational Transparency 6.8 / 13
Governance 7.0 / 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/google-cloud-text-to-speech: 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.

Google Cloud Text-To-Speech Text:synthesize API

The Text:synthesize API from Google Cloud Text-To-Speech — 1 operation(s) for text:synthesize.

Google Cloud Text-To-Speech Voices API

The Voices API from Google Cloud Text-To-Speech — 1 operation(s) for voices.

Postman Collections 2

Ready-to-run Postman collections for exercising this provider's APIs.

Google Cloud Text-to-Speech Text:synthesize API

POSTMAN

Google Cloud Text-to-Speech Text:synthesize Voices API

POSTMAN

Open Collections 1

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

Google Cloud Text-to-Speech API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Google Cloud Text To Speech Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Cloud Text To Speech Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Google Cloud Text To Speech Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

context Context

13 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google Cloud Text-To-Speech API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Speech Synthesis Request

3 properties

JSON SCHEMA

Security Posture 2

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

Google Cloud Text To Speech Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Cloud Text To Speech Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Google Cloud Text To Speech Agentic Access

2 operations · 1 acting

2 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal
Portal
 GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD
JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: google-cloud-text-to-speech
name: Google Cloud Text-To-Speech
description: Google Cloud Text-to-Speech converts text or Speech Synthesis Markup Language (SSML) input into audio data of
  natural human speech. It provides access to hundreds of voices across multiple languages and variants, powered by DeepMind's
  WaveNet technology and Google's neural network models.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-cloud-text-to-speech.png
url: https://raw.githubusercontent.com/api-evangelist/google-cloud-text-to-speech/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.19'
type: Index
tags:
- Audio
- Google Cloud
- Machine Learning
- Speech Synthesis
- Text-To-Speech
apis:
- aid: google-cloud-text-to-speech:google-cloud-text-to-speech-text-synthesize-api
  name: Google Cloud Text-To-Speech Text:synthesize API
  description: The Text:synthesize API from Google Cloud Text-To-Speech — 1 operation(s) for text:synthesize.
  humanURL: https://cloud.google.com/text-to-speech
  baseURL: https://texttospeech.googleapis.com
  tags:
  - Text:synthesize
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-text-to-speech-text-synthesize-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/text-to-speech/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/text-to-speech/docs/quickstart-client-libraries
  - type: JSONSchema
    url: json-schema/speech-synthesis.json
  - type: JSONLD
    url: json-ld/context.jsonld
- aid: google-cloud-text-to-speech:google-cloud-text-to-speech-voices-api
  name: Google Cloud Text-To-Speech Voices API
  description: The Voices API from Google Cloud Text-To-Speech — 1 operation(s) for voices.
  humanURL: https://cloud.google.com/text-to-speech
  baseURL: https://texttospeech.googleapis.com
  tags:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-text-to-speech-voices-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/text-to-speech/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/text-to-speech/docs/quickstart-client-libraries
  - type: JSONSchema
    url: json-schema/speech-synthesis.json
  - type: JSONLD
    url: json-ld/context.jsonld
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-cloud-text-to-speech/overview
- type: AgenticAccess
  url: agentic-access/google-cloud-text-to-speech-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-cloud-text-to-speech-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-cloud-text-to-speech-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/GoogleCloudPlatform
- type: Portal
  url: https://cloud.google.com/text-to-speech
- type: GettingStarted
  url: https://cloud.google.com/text-to-speech/docs/quickstart-client-libraries
- type: Documentation
  url: https://cloud.google.com/text-to-speech/docs
- type: Authentication
  url: https://cloud.google.com/docs/authentication
- type: Pricing
  url: https://cloud.google.com/text-to-speech/pricing
- type: TermsOfService
  url: https://cloud.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: StatusPage
  url: https://status.cloud.google.com/
- type: Support
  url: https://cloud.google.com/text-to-speech/docs/support
- type: JSONLD
  url: json-ld/context.jsonld
- type: Integrations
  url: https://cloud.google.com/marketplace
- url: https://cloud.google.com/feeds/tts-release-notes.xml
  type: Blog
integrations:
- name: Become a Partner
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com