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 API contracts indexed 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 22 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
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 |
|---|---|---|---|---|
| Speech and Voice AI | covered | 29.6 | - | - |
| Obsidian Community Plugins (third-party APIs the Obsidian plugin ecosystem integrates) | covered | 29.6 | - | - |
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 4
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.
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.
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Postman Collections 8
Ready-to-run Postman collections for exercising this provider's APIs.
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Open Collections 8
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Gladia Control AudioToText API
OPEN COLLECTIONGladia Control AudioToText File Management API
OPEN COLLECTIONGladia Control AudioToText Job History API
OPEN COLLECTIONGladia Control AudioToText Live V2 API
OPEN COLLECTIONGladia Control AudioToText OpenRouter API
OPEN COLLECTIONGladia Control AudioToText Pre-recorded V2 API
OPEN COLLECTIONGladia Control AudioToText Transcription V1 API
OPEN COLLECTIONGladia Control AudioToText Transcription V2 API
OPEN COLLECTIONScroll for all 8
Gladia API pricing
Prices published by Gladia, read 2026-10-28 from www.gladia.io/pricing.
| Plan | Price |
|---|---|
| Self-serve (Async) | Starts at 0.16€/hour Includes: 25 concurrent requests, 100+ languages, speaker diarization, custom vocabulary, enhanced punctuation |
| Self-serve (Real-time) | Starts at 0.68€/hour Includes: 30 concurrent requests, 100+ languages, custom vocabulary, name consistency, automatic language dete |
| Enterprise | Custom Includes: Unlimited concurrent requests, custom models & fine-tuning, zero data retention, custom hosting, SLA |
| Add-on: Audio Summarization | 0.03€/hr (0.0005€/min) |
| Add-on: Sentiment analysis | 0.02€/hr (0.0003€/min) |
| Add-on: Translation (100+ languages) | 0.05€/hr (0.0008€/min) |
| Add-on: Named entity recognition | 0.07€/hr (0.0012€/min) |
| Add-on: Audio to LLM | From 0.20€/ 1.25€ per 1M tokens (in/out) |
Plan details, limits and sources →
Rate limits
- Free tier monthly usage cap: 10
- Free tier async concurrency: 3
- Free tier real-time concurrency: 1
Compiled by API Evangelist, not yet checked against Gladia's documentation. All 8 limits →
Billed by: hour · FinOps profile →
Pricing Plans 2
Published pricing tiers and plan structures.
Gladia Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Gladia Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
Gladia
SLAFinOps 1
Cost, billing, and metering signals for API financial operations.
Gladia Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Gladia Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Gladia — jsonschema rules
SPECTRALJSON Schema 5
Standalone JSON Schema definitions for this provider's data models.
AudioUploadResponse
JSON SCHEMADiarizationConfigDTO
JSON SCHEMAInitPreRecordedTranscriptionResponse
JSON SCHEMAInitTranscriptionRequest
JSON SCHEMALiveEventPayload
JSON SCHEMAExamples 4
Example request and response payloads for these APIs.
Gladia Live Session Config
EXAMPLEGladia Upload Audio Url
EXAMPLESecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Documentation 7
Reference material describing how the API behaves
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Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Gladia API — frequently asked questions
Does Gladia have an API?
Yes. APIs.io lists 9 APIs from Gladia, including Gladia Live (Real-time) API, Gladia AudioToText API and Gladia File Management API, and 6 more.
Is there an OpenAPI specification for the Gladia API?
Yes. APIs.io indexes 8 OpenAPI specifications for Gladia, each linked for download from this page.
How do I authenticate with the Gladia API?
Gladia uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Gladia Authentication.
How much does the Gladia API cost?
Gladia publishes its prices; its Self-serve (Async) plan is Starts at 0.16€/hour as of 2026-10-28. APIs.io lists 8 pricing plans for Gladia, with each plan's price, limits and inclusions under Pricing on this page.
Is the Gladia API ready for AI agents?
Gladia has a Kin Score of 50.2 out of 100 (developing) and an Agent Readiness score of 33.9 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.