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 APIs 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.

Sonix’s developer surface includes authentication, documentation, engineering blog, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.9/100 thin ▬ flat Agent 48/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessPaidSelf serve
6 APIs
Audio TranscriptionTranscriptionSpeech-to-TextSubtitlesCaptionsTranslationAIMedia

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 40.9/100 · thin
Contract Quality 14.6 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
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
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/sonix: 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 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 1

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

Sonix API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Sonix Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sonix Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Sonix Finops

FINOPS

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

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 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
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.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · 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/sonix.png
tags:
- Audio Transcription
- Transcription
- Speech-to-Text
- Subtitles
- Captions
- Translation
- AI
- Media
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.19'
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:
  - 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:
  - 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: 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