Gladia

Gladia is an AI audio infrastructure platform that offers speech-to-text transcription via both REST and WebSocket APIs, supporting asynchronous pre-recorded audio processing and real-time live transcription. The platform provides speaker diarization, automatic language detection across 100+ languages, word-level timestamps, and audio intelligence features powered by large language models. Authentication uses an API key passed via the x-gladia-key HTTP header against the base URL https://api.gladia.io/v2/. Gladia offers a free tier with 10 hours per month, metered paid plans starting at $0.61/hour for async and $0.75/hour for real-time, and custom enterprise pricing with zero data retention and SLA guarantees.

Gladia publishes 9 APIs on the APIs.io network, including Live (Real-time) API, AudioToText API, File Management API, and 6 more. Tagged areas include Speech-to-Text, Transcription, Audio Intelligence, Real-Time, and Speaker Diarization.

The Gladia catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Gladia’s developer surface includes authentication, documentation, engineering blog, changelog, pricing, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

49.4/100 developing ▬ flat Agent 32/100 agent ready Front door AI 5/6 prominent saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessPaid

1 APIs

Speech-to-Text TranscriptionAudio IntelligenceReal-Time Speaker Diarization Translation WebSocket REST

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 49.4/100 · developing

Contract Quality 11.1 / 19

Developer Ergonomics 3.8 / 15

Access Clarity 8.2 / 15

Operational Transparency 6.1 / 10

Contract Governance 2.1 / 9

Discoverability 5.0 / 8

Regulatory Posture 4.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

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 8 / 8

Request/Response Examples 7 / 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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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/.

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 github.com/api-evangelist/gladia: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

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

Gladia Live (Real-time) API

WebSocket API for real-time live audio transcription with sub-second latency, supporting multi-language detection, live speaker diarization, and streaming audio intelligence. In...

Gladia AudioToText API

The AudioToText API from Gladia — 1 operation(s) for audiototext.

Gladia File Management API

The File Management API from Gladia — 1 operation(s) for file management.

Gladia Job History API

The Job History API from Gladia — 1 operation(s) for job history.

Gladia Live V2 API

The Live V2 API from Gladia — 3 operation(s) for live v2.

Gladia Pre-recorded V2 API

The Pre-recorded V2 API from Gladia — 3 operation(s) for pre-recorded v2.

Gladia Transcription V1 API

The Transcription V1 API from Gladia — 2 operation(s) for transcription v1.

Gladia Transcription V2 API

The Transcription V2 API from Gladia — 3 operation(s) for transcription v2.

Gladia Open Router API

The Open Router API from Gladia — 1 operation(s) for open router.

Scroll for all 9

Postman Collections 8

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

Gladia Control AudioToText API

POSTMAN

Gladia Control AudioToText File Management API

POSTMAN

Gladia Control AudioToText Job History API

POSTMAN

Gladia Control AudioToText Live V2 API

POSTMAN

Gladia Control AudioToText OpenRouter API

POSTMAN

Gladia Control AudioToText Pre-recorded V2 API

POSTMAN

Gladia Control AudioToText Transcription V1 API

POSTMAN

Gladia Control AudioToText Transcription V2 API

POSTMAN

Scroll for all 8

Open Collections 9

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

API Collection

OPEN COLLECTION

Gladia Control AudioToText API

OPEN COLLECTION

Gladia Control AudioToText File Management API

OPEN COLLECTION

Gladia Control AudioToText Job History API

OPEN COLLECTION

Gladia Control AudioToText Live V2 API

OPEN COLLECTION

Gladia Control AudioToText OpenRouter API

OPEN COLLECTION

Gladia Control AudioToText Pre-recorded V2 API

OPEN COLLECTION

Gladia Control AudioToText Transcription V1 API

OPEN COLLECTION

Gladia Control AudioToText Transcription V2 API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Gladia Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Gladia Rate Limits

8 limits

RATE LIMITS

FinOps 1

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

Gladia Finops

FINOPS

Semantic Vocabularies 1

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

Gladia Context

0 classes · 30 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Gladia API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 5

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

AudioUploadResponse

2 properties

JSON SCHEMA

DiarizationConfigDTO

3 properties

JSON SCHEMA

InitPreRecordedTranscriptionResponse

2 properties

JSON SCHEMA

InitTranscriptionRequest

26 properties

JSON SCHEMA

LiveEventPayload

1 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Gladia Initiate Transcription

11 fields

EXAMPLE

Gladia Live Session Config

7 fields

EXAMPLE

Gladia Transcription Job Response

3 fields

EXAMPLE

Gladia Upload Audio Url

1 fields

EXAMPLE

Security Posture 4

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

Gladia Authentication

apiKey · 1 scheme

SECURITY

Gladia Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Gladia Vulnerability Disclosure

disclosure policy published

SECURITY

Gladia Trust Center

SOC 2, ISO 27001, HIPAA, GDPR

SECURITY

Agentic Access 1

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

Gladia Agentic Access

21 operations · 10 acting · 10 human-in-the-loop

21 operations · 10 acting

AGENTIC

Resources

Documentation 7

Reference material describing how the API behaves

Documentation

OpenAPI

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

Scroll for all 7

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLDContext

JSONLDContext

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: gladia
name: Gladia
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/gladia.png
url: https://raw.githubusercontent.com/api-evangelist/gladia/refs/heads/main/apis.yml
created: 2026-06-12
modified: 2026-06-12
specificationVersion: '0.23'
description: 'Gladia is an AI audio infrastructure platform that offers speech-to-text transcription via both REST and WebSocket
  APIs, supporting asynchronous pre-recorded audio processing and real-time live transcription. The platform provides speaker
  diarization, automatic language detection across 100+ languages, word-level timestamps, and audio intelligence features
  powered by large language models. Authentication uses an API key passed via the x-gladia-key HTTP header against the base
  URL https://api.gladia.io/v2/. Gladia offers a free tier with 10 hours per month, metered paid plans starting at $0.61/hour
  for async and $0.75/hour for real-time, and custom enterprise pricing with zero data retention and SLA guarantees.

  '
tags:
- Speech-to-Text
- Transcription
- Audio Intelligence
- Real-Time
- Speaker Diarization
- Translation
- WebSocket
- REST
apis:
- name: Gladia Live (Real-time) API
  description: 'WebSocket API for real-time live audio transcription with sub-second latency, supporting multi-language detection,
    live speaker diarization, and streaming audio intelligence. Individual sessions are capped at 3 hours.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: wss://api.gladia.io/
  tags:
  - Speech-to-Text
  - Real-Time
  - WebSocket
  - Live Transcription
  properties:
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
  - type: AsyncAPI
    url: https://github.com/gladiaio/docs
- aid: gladia:gladia-audiototext-api
  name: Gladia AudioToText API
  description: The AudioToText API from Gladia — 1 operation(s) for audiototext.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - AudioToText
  properties:
  - type: OpenAPI
    url: openapi/gladia-audiototext-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-file-management-api
  name: Gladia File Management API
  description: The File Management API from Gladia — 1 operation(s) for file management.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - File Management
  properties:
  - type: OpenAPI
    url: openapi/gladia-file-management-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-job-history-api
  name: Gladia Job History API
  description: The Job History API from Gladia — 1 operation(s) for job history.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - Job History
  properties:
  - type: OpenAPI
    url: openapi/gladia-job-history-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-live-v2-api
  name: Gladia Live V2 API
  description: The Live V2 API from Gladia — 3 operation(s) for live v2.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - Live V2
  properties:
  - type: OpenAPI
    url: openapi/gladia-live-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-pre-recorded-v2-api
  name: Gladia Pre-recorded V2 API
  description: The Pre-recorded V2 API from Gladia — 3 operation(s) for pre-recorded v2.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - Pre-recorded V2
  properties:
  - type: OpenAPI
    url: openapi/gladia-pre-recorded-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-transcription-v1-api
  name: Gladia Transcription V1 API
  description: The Transcription V1 API from Gladia — 2 operation(s) for transcription v1.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - Transcription V1
  properties:
  - type: OpenAPI
    url: openapi/gladia-transcription-v1-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-transcription-v2-api
  name: Gladia Transcription V2 API
  description: The Transcription V2 API from Gladia — 3 operation(s) for transcription v2.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: https://api.gladia.io/v2/
  tags:
  - Transcription V2
  properties:
  - type: OpenAPI
    url: openapi/gladia-transcription-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
- aid: gladia:gladia-open-router-api
  name: Gladia Open Router API
  description: The Open Router API from Gladia — 1 operation(s) for open router.
  humanURL: https://docs.gladia.io/chapters/introduction
  baseURL: wss://api.gladia.io/
  tags:
  - Open Router
  properties:
  - type: OpenAPI
    url: openapi/gladia-open-router-api-openapi.yml
  - type: Documentation
    url: https://docs.gladia.io/chapters/introduction
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/gladia/overview
- type: AgenticAccess
  url: agentic-access/gladia-agentic-access.yml
- type: TrustCenter
  url: security/gladia-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/gladia-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/gladia-domain-security.yml
- type: Authentication
  url: authentication/gladia-authentication.yml
- type: Website
  url: https://www.gladia.io/
- type: Documentation
  url: https://docs.gladia.io/
- type: GitHubOrganization
  url: https://github.com/gladiaio
- type: LinkedIn
  url: https://www.linkedin.com/company/gladia-io
- type: X
  url: https://x.com/gladia_io
- type: Blog
  url: https://www.gladia.io/blog
- type: ChangeLog
  url: https://www.gladia.io/changelog
- type: Pricing
  url: https://www.gladia.io/pricing
- type: StatusPage
  url: https://status.gladia.io/
- type: Plans
  url: plans/gladia-plans-pricing.yml
- type: RateLimits
  url: rate-limits/gladia-rate-limits.yml
- type: FinOps
  url: finops/gladia-finops.yml
- type: OpenAPI
  url: openapi/_original/gladia-control-api-openapi.yml
- type: JSONSchema
  url: json-schema/gladia-init-transcription-request.json
- type: JSONSchema
  url: json-schema/gladia-audio-upload-response.json
- type: JSONSchema
  url: json-schema/gladia-init-pre-recorded-transcription-response.json
- type: JSONSchema
  url: json-schema/gladia-diarization-config.json
- type: JSONSchema
  url: json-schema/gladia-live-event-payload.json
- type: Vocabulary
  url: vocabulary/gladia-vocabulary.yml
- type: JSONLDContext
  url: json-ld/gladia-context.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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