Unreal Speech

Unreal Speech is a low-cost, high-scale text-to-speech (TTS) API for turning text into natural-sounding speech. It exposes a small REST surface - a low-latency HTTP streaming endpoint, a synchronous speech endpoint that returns an MP3 plus per-word or per-sentence timestamps, and an asynchronous synthesis tasks endpoint for long-form audio up to 500,000 characters. Requests are authenticated with a Bearer API key issued from the dashboard, and pricing is metered per character with a free monthly allowance.

Unreal Speech publishes 3 APIs on the APIs.io network: Speech API, Stream API, and Synthesis Tasks API. Tagged areas include Text-to-Speech, TTS, Speech Synthesis, Audio, and Voice.

Unreal Speech’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.0/100 thin ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemiumSelf serve⚡ Free to try

3 APIs

Text-to-Speech TTS Speech Synthesis Audio Voice Artificial Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 37.0/100 · thin

Contract Quality 14.0 / 25

Developer Ergonomics 3.3 / 20

Access Clarity 7.9 / 20

Operational Transparency 4.4 / 13

Contract Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 20/100 · agent aware

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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/unrealspeech: 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 3

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

Rate Limits 1

Documented rate limits and quota policies.

Unrealspeech Rate Limits

7 limits

RATE LIMITS

FinOps 1

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

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 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: unrealspeech
url: https://raw.githubusercontent.com/api-evangelist/unrealspeech/refs/heads/main/apis.yml
name: Unreal Speech
kind: company
description: Unreal Speech is a low-cost, high-scale text-to-speech (TTS) API for turning text into natural-sounding speech.
  It exposes a small REST surface - a low-latency HTTP streaming endpoint, a synchronous speech endpoint that returns an MP3
  plus per-word or per-sentence timestamps, and an asynchronous synthesis tasks endpoint for long-form audio up to 500,000
  characters. Requests are authenticated with a Bearer API key issued from the dashboard, and pricing is metered per character
  with a free monthly allowance.
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/unrealspeech.png
tags:
- Text-to-Speech
- TTS
- Speech Synthesis
- Audio
- Voice
- Artificial Intelligence
tags_raw:
- Text to Speech
- TTS
- Speech Synthesis
- Audio
- Voice
- AI
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: unrealspeech:unrealspeech-speech-api
  name: Unreal Speech Speech API
  description: Synchronous text-to-speech returning an MP3 and timestamp URLs.
  humanURL: https://docs.unrealspeech.com/reference/speech
  baseURL: https://api.v7.unrealspeech.com
  tags:
  - Speech
  properties:
  - type: OpenAPI
    url: openapi/unrealspeech-speech-api-openapi.yml
  - type: Documentation
    url: https://docs.unrealspeech.com/reference/getting-started-with-our-api
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/speech
  - type: PostmanCollection
    url: collections/unrealspeech.postman_collection.json
  - type: OpenCollection
    url: collections/unrealspeech.opencollection.json
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/stream
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/synthesistasks
- aid: unrealspeech:unrealspeech-stream-api
  name: Unreal Speech Stream API
  description: Low-latency HTTP streaming synthesis returning audio bytes.
  humanURL: https://docs.unrealspeech.com/reference/speech
  baseURL: https://api.v7.unrealspeech.com
  tags:
  - Stream
  properties:
  - type: OpenAPI
    url: openapi/unrealspeech-stream-api-openapi.yml
  - type: Documentation
    url: https://docs.unrealspeech.com/reference/getting-started-with-our-api
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/speech
  - type: PostmanCollection
    url: collections/unrealspeech.postman_collection.json
  - type: OpenCollection
    url: collections/unrealspeech.opencollection.json
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/stream
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/synthesistasks
- aid: unrealspeech:unrealspeech-synthesis-tasks-api
  name: Unreal Speech Synthesis Tasks API
  description: Asynchronous synthesis for long-form audio via submit-and-poll.
  humanURL: https://docs.unrealspeech.com/reference/speech
  baseURL: https://api.v7.unrealspeech.com
  tags:
  - Synthesis Tasks
  properties:
  - type: OpenAPI
    url: openapi/unrealspeech-synthesis-tasks-api-openapi.yml
  - type: Documentation
    url: https://docs.unrealspeech.com/reference/getting-started-with-our-api
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/speech
  - type: PostmanCollection
    url: collections/unrealspeech.postman_collection.json
  - type: OpenCollection
    url: collections/unrealspeech.opencollection.json
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/stream
  - type: APIReference
    url: https://docs.unrealspeech.com/reference/synthesistasks
common:
- type: AgenticAccess
  url: agentic-access/unrealspeech-agentic-access.yml
- type: DomainSecurity
  url: security/unrealspeech-domain-security.yml
- type: Authentication
  url: authentication/unrealspeech-authentication.yml
- type: GitHubOrganization
  url: https://github.com/unrealspeech
- type: LinkedIn
  url: https://www.linkedin.com/company/unrealspeech
- type: Website
  url: https://unrealspeech.com
- type: Documentation
  url: https://docs.unrealspeech.com
- type: Plans
  url: plans/unrealspeech-plans-pricing.yml
- type: RateLimits
  url: rate-limits/unrealspeech-rate-limits.yml
- type: FinOps
  url: finops/unrealspeech-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Unreal Speech

Kin Score

APIs 3

Unreal Speech Speech API

Unreal Speech Stream API

Unreal Speech Synthesis Tasks API

Open Collections 5

API Collection

Unreal Speech API

Unreal Speech Stream API

Unreal Speech Synthesis Tasks API

Unreal Speech API

Pricing Plans 1

Unrealspeech Plans Pricing

Rate Limits 1

Unrealspeech Rate Limits

FinOps 1

Unrealspeech Finops

Security Posture 2

Unrealspeech Authentication

Unrealspeech Domain Security

Agentic Access 1

Unrealspeech Agentic Access

Resources