Soniox

Soniox provides a multilingual speech AI platform offering real‑time speech‑to‑text, text‑to‑speech and translation APIs in over 60 languages. The service emphasizes low‑latency streaming, high accuracy with native‑speaker models, and seamless language switching for live voice applications, targeting developers building voice‑enabled products.

Soniox is profiled on the APIs.io network. Tagged areas include Speech AI, Multilingual, Real-time, Streaming, and API.

Soniox’s developer surface includes changelog, authentication, support, signup flow, pricing, getting-started guide, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.1/100 thin Agent 9/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Speech AI MultilingualReal-timeStreamingAPI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 32.1/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 9.3 / 17

Access Clarity 7.6 / 17

Operational Transparency 3.2 / 11

Contract Governance 1.9 / 10

Discoverability 4.1 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 9/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 44.7 — up to +11.1 composite points
Contract Governance scores 18.2 — up to +9.8 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/soniox/apis.yml: open an issue on github.com/api-evangelist/soniox 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
Speech and Voice AI	covered	34.5 (thin)	-	-

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.

Security Posture 2

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

Soniox Authentication

1 scheme

SECURITY

Soniox Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Deprecation

Deprecation

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: soniox
name: Soniox
image: https://soniox.com/og/logo_soniox_v2.png
description: Soniox provides a multilingual speech AI platform offering real‑time speech‑to‑text, text‑to‑speech and translation
  APIs in over 60 languages. The service emphasizes low‑latency streaming, high accuracy with native‑speaker models, and seamless
  language switching for live voice applications, targeting developers building voice‑enabled products.
url: https://raw.githubusercontent.com/api-evangelist/soniox/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- Speech AI
- Multilingual
- Real-time
- Streaming
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ChangeLog
  url: changelog/soniox-changelog.yml
- type: Authentication
  url: authentication/soniox-authentication.yml
- type: Deprecation
  url: lifecycle/soniox-lifecycle.yml
- type: Lifecycle
  url: lifecycle/soniox-lifecycle.yml
- type: Conformance
  url: conformance/soniox-conformance.yml
- type: LLMsTxt
  url: llms/soniox-llms.txt
- type: Hosts
  url: hosts/soniox-hosts.yml
- type: SDKs
  url: packages/soniox-packages.yml
- type: Packages
  url: packages/soniox-packages.yml
- type: TermsOfService
  url: https://soniox.com/policies/terms-of-service
- type: Support
  url: https://app.soniox.com/help-center
- type: SignUp
  url: https://console.soniox.com/signup
- type: PrivacyPolicy
  url: https://soniox.com/policies/privacy-policy
- type: Pricing
  url: https://soniox.com/pricing
- type: GitHubOrganization
  url: https://github.com/soniox
- type: GettingStarted
  url: https://soniox.com/docs/stt/get-started
- type: Blog
  url: https://soniox.com/blog
- type: Documentation
  url: https://docs.soniox.com/
- type: APIReference
  url: https://soniox.com/docs/api-reference
- type: DomainSecurity
  url: security/soniox-domain-security.yml
- type: Website
  url: https://soniox.com/
apis: []
x-submission-probe: 200 2026-10-26
x-coverage:
  state: none
  reason: no-developer-program
  method: derived
  generated: '2026-10-27'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes no developer documentation host and no machine-readable contract on its own domain
  evidence:
  - url: https://soniox.com/
    status: 200
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 16
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Soniox API — frequently asked questions

How do I authenticate with the Soniox API?

Soniox uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Soniox Authentication.

Is the Soniox API ready for AI agents?

Soniox has a Kin Score of 32.1 out of 100 (thin) and an Agent Readiness score of 8.5 (agent-aware), scored by API Evangelist on 2026-10-31.

Work with this as data

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https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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