PlayHT

PlayHT, now operating as PlayAI, is a generative voice platform offering realistic text-to-speech models, AI voice agents, and a podcast generation tool called PlayNote. The platform centers on the PlayDialog and Play 3.0 Mini models, providing more than 200 prebuilt voices across multiple languages and accents with sub-second latency suited to conversational applications. PlayAI exposes REST and streaming endpoints for text-to-speech, voice listing, voice cloning, and voice agent management. It ships Python and Node.js SDKs and a hosted playground, and integrates with the major voice agent infrastructure stacks. The product is widely used to build voice assistants, IVRs, narration pipelines, and content production workflows.

PlayHT publishes 8 API contracts indexed on the APIs.io network, including PlayAI Text-to-Speech API, PlayAI Voice Agents API, Agents API, and 5 more. Tagged areas include Voice, Text-to-Speech, Voice Cloning, Voice Agents, and Streaming.

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

PlayHT’s developer surface includes authentication, documentation, engineering blog, pricing, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

0.0/100 minimal ▬ flat Agent 0/100 human only Heartbeat 11/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreeSelf serve⚡ Free to try

1 published contract

Voice Text-to-Speech Voice Cloning Voice Agents StreamingPlayDialogPlay 3.0PlayNoteMultilingual Real-Time Defunct

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 0.0/100 · minimal

Contract Quality 0.0 / 19

Developer Ergonomics 0.0 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.0 / 10

Contract Governance 0.0 / 9

Discoverability 0.0 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 0.0 — up to +20.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/playht/apis.yml: open an issue on github.com/api-evangelist/playht to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Hugging Face Hub Organisations	builds-on	17.2 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

AsyncAPI

measured — observed by APIs.io (published)

APIs 8

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

PlayAI Text-to-Speech API

The PlayAI Text-to-Speech API converts text into natural, human-like speech using the PlayDialog 1.0, Dialog 1.0 Turbo, and Play 3.0 Mini models. It supports streaming, voice cl...

PlayAI Voice Agents API

The PlayAI Voice Agents API lets developers create, configure, and run conversational AI agents that process voice input and respond with generated speech, with optional tool us...

PlayHT Agents API

Voice agent management.

PlayHT Conversations API

Agent conversation retrieval.

PlayHT External Functions API

Tool definitions for voice agents.

PlayHT PlayNote API

Document-to-audio PlayNote jobs.

PlayHT TTS API

Text-to-speech generation, streaming, and async jobs.

PlayHT Voices API

Prebuilt voice catalog.

Scroll for all 8

Open Collections 7

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

PlayAI Agents API

OPEN COLLECTION

PlayAI Agents Conversations API

OPEN COLLECTION

PlayAI Agents External Functions API

OPEN COLLECTION

PlayAI Agents PlayNote API

OPEN COLLECTION

PlayAI Agents TTS API

OPEN COLLECTION

PlayAI Agents Voices API

OPEN COLLECTION

PlayAI API

OPEN COLLECTION

Scroll for all 7

PlayHT API pricing

Not yet checked against PlayHT's own pricing page. Compiled by API Evangelist on 2026-05-22; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Pro Tier Default: 120 requests per minute

Compiled by API Evangelist, not yet checked against PlayHT's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Playht Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Playht Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

PlayHT

SLA

FinOps 1

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

Playht Finops

FINOPS

Event Specifications 1

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

PlayAI Realtime WebSocket APIs

AsyncAPI 2.6 description of the PlayAI (formerly PlayHT) realtime WebSocket APIs. Covers the Text-to-Speech (TTS) streaming WebSocket used to synthesize audio from text in real ...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

PlayHT — asyncapi rules

7 rules · 1 errors 5 warnings 1 info

SPECTRAL

Security Posture 2

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

Playht Authentication

apiKey · 2 schemes

SECURITY

Playht Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Playht Agentic Access

13 operations · 6 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

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 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Discord

Discord

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: playht
name: PlayHT
description: PlayHT, now operating as PlayAI, is a generative voice platform offering realistic text-to-speech models, AI
  voice agents, and a podcast generation tool called PlayNote. The platform centers on the PlayDialog and Play 3.0 Mini models,
  providing more than 200 prebuilt voices across multiple languages and accents with sub-second latency suited to conversational
  applications. PlayAI exposes REST and streaming endpoints for text-to-speech, voice listing, voice cloning, and voice agent
  management. It ships Python and Node.js SDKs and a hosted playground, and integrates with the major voice agent infrastructure
  stacks. The product is widely used to build voice assistants, IVRs, narration pipelines, and content production workflows.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/playht.png
tags:
- Voice
- Text-to-Speech
- Voice Cloning
- Voice Agents
- Streaming
- PlayDialog
- Play 3.0
- PlayNote
- Multilingual
- Real-Time
- Defunct
tags_raw:
- Voice
- TTS
- Text to Speech
- Voice Cloning
- Voice Agents
- Streaming
- PlayDialog
- Play 3.0
- PlayNote
- Multilingual
- Real-Time
- Defunct
url: https://raw.githubusercontent.com/api-evangelist/playht/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-29'
specificationVersion: '0.23'
apis:
- aid: playht:tts-api
  name: PlayAI Text-to-Speech API
  description: The PlayAI Text-to-Speech API converts text into natural, human-like speech using the PlayDialog 1.0, Dialog
    1.0 Turbo, and Play 3.0 Mini models. It supports streaming, voice cloning, and a large catalog of prebuilt voices across
    many languages and accents.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Text-to-Speech
  - Streaming
  - Voice Cloning
  - Voice
  - Multilingual
  tags_raw:
  - TTS
  - Streaming
  - Voice Cloning
  - Voices
  - Multilingual
  properties:
  - type: Documentation
    url: https://docs.play.ai
  - type: GettingStarted
    url: https://docs.play.ai/tts-api
  - type: Signup
    url: https://play.ai/signup
  - type: APIReference
    url: https://docs.play.ai
  - type: SDKs
    url: https://github.com/playht/pyht
  - type: SDKs
    url: https://github.com/playht/playht-nodejs-sdk
  - type: GitHubRepository
    url: https://github.com/playht
  - type: Pricing
    url: https://play.ai/pricing
  - type: Authentication
    url: https://docs.play.ai
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/playht/refs/heads/main/asyncapi/playht-asyncapi.yml
  features:
  - name: Multiple TTS Models
    description: Choose between PlayDialog 1.0, Dialog 1.0 Turbo, and Play 3.0 Mini for quality vs speed tradeoffs.
  - name: 200+ Prebuilt Voices
    description: Library of more than 200 prebuilt voices across many languages and accents.
  - name: Streaming Output
    description: Real-time streaming audio for sub-second time to first byte.
  - name: Voice Cloning
    description: Clone a voice from reference audio for personalized synthesis.
  - name: Speech Parameters
    description: Adjust speed, pitch, and volume to fit the use case.
  - name: Multiple Audio Formats
    description: Output to common audio formats and bitrates for downstream pipelines.
  useCases:
  - name: Voice Agents
    description: Power conversational voice agents with low-latency synthesis.
  - name: IVR and Phone Bots
    description: Replace recorded prompts and IVR menus with generative speech.
  - name: Content Production
    description: Generate narration for video, audiobooks, and explainers.
  - name: Accessibility
    description: Add high-quality read-aloud features to applications.
  - name: Localization
    description: Localize voiceovers across languages and accents.
  integrations:
  - name: Twilio
  - name: LiveKit
  - name: Pipecat
  - name: Vapi
  - name: Daily
  - name: LangChain
  - name: OpenAI
  - name: Anthropic
  - name: Vercel AI SDK
  authentication:
  - type: API Key
    description: API key authentication with a user ID and secret API key in request headers.
- aid: playht:agents-api
  name: PlayAI Voice Agents API
  description: The PlayAI Voice Agents API lets developers create, configure, and run conversational AI agents that process
    voice input and respond with generated speech, with optional tool use and external integrations.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Voice Agents
  - Conversational AI
  - Tools
  - Streaming
  properties:
  - type: Documentation
    url: https://docs.play.ai
  - type: APIReference
    url: https://docs.play.ai
  - type: SDKs
    url: https://github.com/playht
  - type: Pricing
    url: https://play.ai/pricing
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/playht/refs/heads/main/asyncapi/playht-asyncapi.yml
  features:
  - name: Agent Configuration
    description: Define agent persona, voice, knowledge, and behavior via API.
  - name: Voice Input Handling
    description: Receive and process real-time voice input from users.
  - name: Tool Use
    description: Integrate agents with external tools and APIs for actions.
  - name: Knowledge Grounding
    description: Ground agents in custom knowledge sources for accurate replies.
  useCases:
  - name: Customer Support Voice Bots
    description: Build voice support agents that resolve common requests.
  - name: Outbound Calling
    description: Run outbound voice agents for reminders, surveys, and follow-ups.
  - name: Voice Concierge
    description: Create concierge experiences inside apps and devices.
  integrations:
  - name: Twilio
  - name: LiveKit
  - name: Pipecat
  - name: Daily
  - name: Zapier
  authentication:
  - type: API Key
    description: API key authentication with a user ID and secret API key in request headers.
- aid: playht:playht-agents-api
  name: PlayHT Agents API
  description: Voice agent management.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/playht-agents-api-openapi.yml
- aid: playht:playht-conversations-api
  name: PlayHT Conversations API
  description: Agent conversation retrieval.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Conversations
  properties:
  - type: OpenAPI
    url: openapi/playht-conversations-api-openapi.yml
- aid: playht:playht-external-functions-api
  name: PlayHT External Functions API
  description: Tool definitions for voice agents.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - External Functions
  properties:
  - type: OpenAPI
    url: openapi/playht-external-functions-api-openapi.yml
- aid: playht:playht-playnote-api
  name: PlayHT PlayNote API
  description: Document-to-audio PlayNote jobs.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - PlayNote
  properties:
  - type: OpenAPI
    url: openapi/playht-playnote-api-openapi.yml
- aid: playht:playht-tts-api
  name: PlayHT TTS API
  description: Text-to-speech generation, streaming, and async jobs.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Text-to-Speech
  tags_raw:
  - TTS
  properties:
  - type: OpenAPI
    url: openapi/playht-tts-api-openapi.yml
- aid: playht:playht-voices-api
  name: PlayHT Voices API
  description: Prebuilt voice catalog.
  humanURL: https://docs.play.ai
  baseURL: https://api.play.ai
  tags:
  - Voice
  tags_raw:
  - Voices
  properties:
  - type: OpenAPI
    url: openapi/playht-voices-api-openapi.yml
common:
- type: Plans
  url: plans/playht-plans-pricing.yml
- type: RateLimits
  url: rate-limits/playht-rate-limits.yml
- type: FinOps
  url: finops/playht-finops.yml
- type: AgenticAccess
  url: agentic-access/playht-agentic-access.yml
- type: DomainSecurity
  url: security/playht-domain-security.yml
- type: Authentication
  url: authentication/playht-authentication.yml
- type: Website
  url: https://play.ht
- type: Documentation
  url: https://docs.play.ai
- type: Blog
  url: https://play.ht/blog
- type: GitHubOrganization
  url: https://github.com/playht
- type: Pricing
  url: https://play.ht/pricing
- type: TermsOfService
  url: https://play.ht/terms
- type: PrivacyPolicy
  url: https://play.ht/privacy
- type: Discord
  url: https://discord.gg/VuP4nXVA9M
- type: X
  url: https://x.com/play_ht
- type: LinkedIn
  url: https://www.linkedin.com/company/playht
- type: LlmsText
  url: https://docs.play.ai/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-status: defunct
x-status-detail: 'Meta acqui-hired the PlayAI (PlayHT) team in July 2025; the API went offline in late July 2025 and the product
  sunset on 2025-12-31. play.ht, api.play.ht and play.ai do not resolve (checked 2026-09-24). Sources: inworld.ai/resources/migrate-from-playht,
  aiwiki.ai/wiki/playht. roadmap#780'

PlayHT API — frequently asked questions

Does PlayHT have an API?

Yes. APIs.io lists 8 APIs from PlayHT, including PlayAI Text-to-Speech API, PlayAI Voice Agents API and PlayHT Agents API, and 5 more.

Is there an OpenAPI specification for the PlayHT API?

Yes. APIs.io indexes 6 OpenAPI specifications for PlayHT, each linked for download from this page.

How do I authenticate with the PlayHT API?

PlayHT uses bearer-token authentication (apiKey · 2 schemes). The details are profiled on APIs.io as Playht Authentication.

How much does the PlayHT API cost?

APIs.io lists 1 pricing plan for PlayHT, with each plan's price, limits and inclusions under Pricing on this page.

Is the PlayHT API ready for AI agents?

PlayHT has a Kin Score of 0.0 out of 100 (minimal) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-11-06.

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