Sonix

Sonix is an AI-powered platform for automated audio and video transcription, subtitles, and translation. It transcribes in 54+ languages with speaker labels and word-level timestamps, translates transcripts into 55+ languages, generates subtitles and captions (SRT, VTT, TXT, JSON, DOCX, PDF), and runs AI analysis (summaries, chapters, sentiment, entities). The Sonix REST API - available to subscribers - lets developers upload media, poll transcription status, retrieve and edit transcripts, export subtitles, and translate, all authorized with a Bearer API key against https://api.sonix.ai/v1.

Sonix publishes 6 API contracts indexed on the APIs.io network, including AI Analysis API, Exports API, Folders API, and 3 more. Tagged areas include Audio Transcription, Transcription, Speech-to-Text, Subtitles, and Captions.

The Sonix catalog on APIs.io includes 1 Spectral governance ruleset.

Sonix’s developer surface includes pricing, authentication, documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.5/100 thin ▬ flat Agent 44/100 agent ready Front door AI 5/6 prominent Heartbeat 39/100 going silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers

Audio Transcription Transcription Speech-to-Text Subtitles Captions Translation Artificial Intelligence Media

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

AI Model Services

AE-110

AI AnalysisMediaTranscripts

GET /media/{id}/transcript POST /media/{id}/summarizations GET /media POST /media

Content Origination & Production Management

BC-3700

ExportsTranslations

POST /media/{id}/translations

Kin Score

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

Composite quality — 34.5/100 · thin

Contract Quality 10.1 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.5 / 15

Operational Transparency 0.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.1 / 8

Regulatory Posture 0.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 44/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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

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
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 32.1 — up to +13.6 composite points
Access Clarity scores 36.8 — up to +12.6 composite points
Operational Transparency scores 7.9 — up to +12.0 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/sonix/apis.yml: open an issue on github.com/api-evangelist/sonix 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
Zoom App Marketplace and Partner Ecosystem (builders and partners on Zoom)	builds-on	22.2	-	-

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

Sonix AI Analysis API

Generate summaries, chapters, sentiment, and entity analysis from transcripts.

Sonix Exports API

Export transcripts as subtitles, captions, documents, and media burn-ins.

Sonix Folders API

Organize media into folders.

Sonix Media API

Upload and manage audio and video media files for transcription.

Sonix Transcripts API

Retrieve and edit transcripts produced from media.

Sonix Translations API

Translate a completed transcript into another language.

Open Collections 7

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

Sonix AI Analysis API

OPEN COLLECTION

Sonix AI Analysis Exports API

OPEN COLLECTION

Sonix AI Analysis Folders API

OPEN COLLECTION

Sonix AI Analysis Media API

OPEN COLLECTION

Sonix AI Analysis Transcripts API

OPEN COLLECTION

Sonix AI Analysis Translations API

OPEN COLLECTION

Sonix API

OPEN COLLECTION

Scroll for all 7

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Sonix MCP Server

Remote MCP server at api.sonix.ai over HTTP.

MCP SERVER

Sonix API pricing

Prices published by Sonix, read 2026-10-07 from sonix.ai/pricing.

Plan	Price
Pay As You Go	$10/hr Includes: Pay as you go transcription & translation; AI workspace usage: Not available; 5 GB storage; Single-u
Core (monthly)	$25/mo Includes: 5 hrs/mo transcription & translation; 5 hrs/mo AI workspace usage; 25 GB storage; 1 user included
Core (annual)	$275/yr Includes: 60 hrs/yr transcription & translation; 60 hrs/yr AI workspace usage; 25 GB storage; 1 user included
Advanced (monthly)	$50/mo Includes: 20 hrs/mo transcription & translation; 25 hrs/mo AI workspace usage; 50 GB storage; 1 user included
Advanced (annual)	$550/yr Includes: 240 hrs/yr transcription & translation; 300 hrs/yr AI workspace usage; 50 GB storage
Pro (monthly)	$80/mo Includes: 40 hrs/mo transcription & translation; 100 hrs/mo AI workspace usage; 100 GB storage; 1 user include
Pro (annual)	$880/yr Includes: 480 hrs/yr transcription & translation; 1,200 hrs/yr AI workspace usage; 100 GB storage
Enterprise	Custom pricing for your org Includes: Everything in Pro, plus SSO/SAML, SCIM, audit logs, 1 TB storage per workspace, unlimited team membe

Plan details, limits and sources →

Rate limits

API Request Rate: not published requests
Transcription / Translation Hours: per plan hours
AI Workspace Hours: per plan hours

Compiled by API Evangelist, not yet checked against Sonix's documentation. All 6 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Sonix Plans Pricing

8 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sonix Rate Limits

6 limits

RATE LIMITS

Service Levels 1

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

Sonix

SLA

FinOps 1

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

Sonix Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Sonix API Rules

64 rules · 58 errors 2 warnings 4 info

SPECTRAL

Security Posture 1

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

Sonix Authentication

http · 1 scheme

SECURITY

Agentic Access 1

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

Sonix Agentic Access

22 operations · 11 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

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

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: sonix
url: https://raw.githubusercontent.com/api-evangelist/sonix/refs/heads/main/apis.yml
name: Sonix
kind: company
description: Sonix is an AI-powered platform for automated audio and video transcription, subtitles, and translation. It transcribes
  in 54+ languages with speaker labels and word-level timestamps, translates transcripts into 55+ languages, generates subtitles
  and captions (SRT, VTT, TXT, JSON, DOCX, PDF), and runs AI analysis (summaries, chapters, sentiment, entities). The Sonix
  REST API - available to subscribers - lets developers upload media, poll transcription status, retrieve and edit transcripts,
  export subtitles, and translate, all authorized with a Bearer API key against https://api.sonix.ai/v1.
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
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sonix.png
tags:
- Audio Transcription
- Transcription
- Speech-to-Text
- Subtitles
- Captions
- Translation
- Artificial Intelligence
- Media
tags_raw:
- Audio Transcription
- Transcription
- Speech-to-Text
- Subtitles
- Captions
- Translation
- AI
- Media
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: sonix:sonix-ai-analysis-api
  name: Sonix AI Analysis API
  description: Generate summaries, chapters, sentiment, and entity analysis from transcripts.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - AI Analysis
  properties:
  - type: OpenAPI
    url: openapi/sonix-ai-analysis-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
- aid: sonix:sonix-exports-api
  name: Sonix Exports API
  description: Export transcripts as subtitles, captions, documents, and media burn-ins.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - Export
  tags_raw:
  - Exports
  properties:
  - type: OpenAPI
    url: openapi/sonix-exports-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
- aid: sonix:sonix-folders-api
  name: Sonix Folders API
  description: Organize media into folders.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - Folders
  properties:
  - type: OpenAPI
    url: openapi/sonix-folders-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
- aid: sonix:sonix-media-api
  name: Sonix Media API
  description: Upload and manage audio and video media files for transcription.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - Media
  properties:
  - type: OpenAPI
    url: openapi/sonix-media-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
- aid: sonix:sonix-transcripts-api
  name: Sonix Transcripts API
  description: Retrieve and edit transcripts produced from media.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - Transcripts
  properties:
  - type: OpenAPI
    url: openapi/sonix-transcripts-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
- aid: sonix:sonix-translations-api
  name: Sonix Translations API
  description: Translate a completed transcript into another language.
  humanURL: https://sonix.ai/docs/api
  baseURL: https://api.sonix.ai/v1
  tags:
  - Translation
  tags_raw:
  - Translations
  properties:
  - type: OpenAPI
    url: openapi/sonix-translations-api-openapi.yml
  - type: Documentation
    url: https://sonix.ai/docs/api
  - type: APIReference
    url: https://sonix.ai/api
  - type: PostmanCollection
    url: collections/sonix.postman_collection.json
  - type: OpenCollection
    url: collections/sonix.opencollection.json
common:
- type: Pricing
  url: https://sonix.ai/pricing
- type: CapabilityMap
  url: capabilities/sonix-capability-edges.yml
  name: Sonix Business Capability Map
- type: AgenticAccess
  url: agentic-access/sonix-agentic-access.yml
- type: Authentication
  url: authentication/sonix-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/sonix-ai
- type: Website
  url: https://sonix.ai
- type: Documentation
  url: https://sonix.ai/docs/api
- type: Plans
  url: plans/sonix-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sonix-rate-limits.yml
- type: FinOps
  url: finops/sonix-finops.yml
- url: https://sonix.ai/resources
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Sonix API — frequently asked questions

Does Sonix have an API?

Yes. APIs.io lists 6 APIs from Sonix, including Sonix AI Analysis API, Sonix Exports API and Sonix Folders API, and 3 more.

Is there an OpenAPI specification for the Sonix API?

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

How do I authenticate with the Sonix API?

Sonix documents its authentication (http · 1 scheme). The details are profiled on APIs.io as Sonix Authentication.

How much does the Sonix API cost?

Sonix publishes its prices; its Pay As You Go plan is $10/hr as of 2026-10-07. APIs.io lists 8 pricing plans for Sonix, with each plan's price, limits and inclusions under Pricing on this page.

Does Sonix have an MCP server?

Yes. APIs.io lists 1 MCP server for Sonix: Remote MCP server at api.sonix.ai over HTTP.

Is the Sonix API ready for AI agents?

Sonix has a Kin Score of 34.5 out of 100 (thin) and an Agent Readiness score of 43.9 (agent-ready), scored by API Evangelist on 2026-11-06.

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