Allmodels

Allmodels provides a unified API that routes text‑to‑speech, speech‑to‑text, and real‑time voice models from multiple providers. Users can compare latency, pricing, and capabilities across models, enabling seamless integration of voice AI into applications. The platform offers a single endpoint for TTS, STT, and streaming voice, simplifying development and reducing vendor lock‑in.

Allmodels is listed with 7 APIs on the APIs.io network, including Account API, Allmodels API, Custom Voices API, and 4 more. Tagged areas include Company, Voice AI, Text-to-Speech, Speech-to-Text, and Real-Time.

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

Allmodels’ developer surface includes authentication, sandbox, pricing, API reference, documentation, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.8/100 thin ▼ -6.1 Agent 24/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

7 APIs

Company Voice AI Text-to-Speech Speech-to-Text Real-Time

Kin Score

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

Composite quality — 28.8/100 · thin

Contract Quality 4.8 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 5.5 / 15

Operational Transparency 0.0 / 10

Contract Governance 2.0 / 9

Discoverability 5.9 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 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 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

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
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
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 25.8 — up to +18.6 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Operational Transparency scores 0.0 — up to +13.0 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/allmodels/apis.yml: open an issue on github.com/api-evangelist/allmodels 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 →

Standards implemented 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

Allmodels Account API

The Account API from Allmodels — 1 operation(s) for account.

Allmodels Allmodels API

The Allmodels API API from Allmodels — 1 operation(s) for allmodels api.

Allmodels Custom Voices API

The Custom Voices API from Allmodels — 2 operation(s) for custom voices.

Allmodels El API

The El API from Allmodels — 3 operation(s) for el.

Allmodels Health API

The Health API from Allmodels — 1 operation(s) for health.

Allmodels Oai API

The Oai API from Allmodels — 1 operation(s) for oai.

Allmodels Realtime API

The Realtime API from Allmodels — 1 operation(s) for realtime.

Scroll for all 7

Allmodels API pricing

Prices published by Allmodels, read 2026-10-15 from allmodels.io/pricing. A free plan or tier is listed.

Plan	Price
Free	Free
Pay as you Go	5.5%

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Allmodels Plans Pricing

2 plans

PLANS

Service Levels 1

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

Allmodels

SLA

Semantic Vocabularies 1

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

Allmodels Context

6 classes · 10 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Allmodels API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 6

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

GetHealthResponse

2 properties

JSON SCHEMA

GetV1CustomVoicesAmNarratorResponse

2 properties

JSON SCHEMA

GetV1V1IdResponse

3 properties

JSON SCHEMA

PostOaiAudioAudioidRequest

5 properties

JSON SCHEMA

PostOaiAudioAudioidResponse

7 properties

JSON SCHEMA

PostV1CustomVoicesResponse

3 properties

JSON SCHEMA

Security Posture 2

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

Allmodels Authentication

1 scheme

SECURITY

Allmodels Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: allmodels
name: Allmodels
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  probe_state: gated
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://allmodels.io/assets/og/allmodels-social-pixels-v1.png
description: Allmodels provides a unified API that routes text‑to‑speech, speech‑to‑text, and real‑time voice models from
  multiple providers. Users can compare latency, pricing, and capabilities across models, enabling seamless integration of
  voice AI into applications. The platform offers a single endpoint for TTS, STT, and streaming voice, simplifying development
  and reducing vendor lock‑in.
url: https://raw.githubusercontent.com/api-evangelist/allmodels/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-15 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-15'
modified: '2026-10-15'
tags:
- Company
- Voice AI
- Text-to-Speech
- Speech-to-Text
- Real-Time
tags_raw:
- Company
- VoiceAI
- TextToSpeech
- SpeechToText
- RealTime
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/allmodels-plans-pricing.yml
- type: Spectral
  url: rules/allmodels-rules.yml
- type: JSONLD
  url: json-ld/allmodels-context.jsonld
- type: Vocabulary
  url: vocabulary/allmodels-vocabulary.yml
- type: DataModel
  url: data-model/allmodels-data-model.yml
- type: Conventions
  url: conventions/allmodels-conventions.yml
- type: Authentication
  url: authentication/allmodels-authentication.yml
- type: Conformance
  url: conformance/allmodels-conformance.yml
- type: LLMsTxt
  url: llms/allmodels-llms.txt
- type: WellKnown
  url: well-known/allmodels-well-known.yml
- type: Hosts
  url: hosts/allmodels-hosts.yml
- type: Vendors
  url: vendors/allmodels-vendors.yml
- type: TermsOfService
  url: https://allmodels.io/terms
- type: Sandbox
  url: https://allmodels.io/playground
- type: PrivacyPolicy
  url: https://allmodels.io/privacy
- type: Pricing
  url: https://allmodels.io/pricing
- type: APIReference
  url: https://allmodels.io/docs/api-reference
- type: DomainSecurity
  url: security/allmodels-domain-security.yml
- type: Website
  url: https://allmodels.io
- type: Documentation
  url: https://allmodels.io/docs
apis:
- aid: allmodels:allmodels-account-api
  name: Allmodels Account API
  description: The Account API from Allmodels — 1 operation(s) for account.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/allmodels-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-allmodels-api-api
  name: Allmodels Allmodels API
  description: The Allmodels API API from Allmodels — 1 operation(s) for allmodels api.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Allmodels API
  properties:
  - type: OpenAPI
    url: openapi/allmodels-allmodels-api-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-custom-voices-api
  name: Allmodels Custom Voices API
  description: The Custom Voices API from Allmodels — 2 operation(s) for custom voices.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Custom Voices
  properties:
  - type: OpenAPI
    url: openapi/allmodels-custom-voices-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-el-api
  name: Allmodels El API
  description: The El API from Allmodels — 3 operation(s) for el.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - El
  properties:
  - type: OpenAPI
    url: openapi/allmodels-el-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-health-api
  name: Allmodels Health API
  description: The Health API from Allmodels — 1 operation(s) for health.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/allmodels-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-oai-api
  name: Allmodels Oai API
  description: The Oai API from Allmodels — 1 operation(s) for oai.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Oai
  properties:
  - type: OpenAPI
    url: openapi/allmodels-oai-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
- aid: allmodels:allmodels-realtime-api
  name: Allmodels Realtime API
  description: The Realtime API from Allmodels — 1 operation(s) for realtime.
  humanURL: https://allmodels.io/docs/api-reference/models/listModels
  baseURL: https://api.allmodels.io
  tags:
  - Real-Time
  tags_raw:
  - Realtime
  properties:
  - type: OpenAPI
    url: openapi/allmodels-realtime-api-openapi.yml
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-v1-id-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-v1-custom-voices-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-request-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-post-oai-audio-audioid-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-v1-custom-voices-am-narrator-response-schema.json
  - type: JSONSchema
    url: json-schema/allmodels-get-health-response-schema.json
x-submission-notes: 'Unified TTS/STT/realtime voice API across providers; OpenAPI + AsyncAPI | Kin approved listing 2026-10-15
  (case-by-case: Resale/routing of other providers'' voice models (OpenRouter-style); real OpenAPI+AsyncAPI, so a Kin call;
  root soft-200s)'
x-submission-probe: root 200, docs 200, openapi.yaml 200 (357KB), soft-404 FAIL (unknown path 200 SPA shell)
x-submitted-by: moe@allmodels.io (apis.io/add, 2026-10-15)
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-15'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://api.allmodels.io/openapi.yaml
    status: null
  - url: https://api.allmodels.io/asyncapi.yaml
    status: null
  - url: https://docs.allmodels.io/asyncapi.yaml
    status: null
  - url: https://docs.allmodels.io/mcp
    status: null
  - url: https://dash.allmodels.io/mcp
    status: 403
  - url: https://api.allmodels.io/mcp
    status: 401
x-enrichment:
  date: '2026-10-15'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Allmodels API — frequently asked questions

Does Allmodels have an API?

Yes. APIs.io lists 7 APIs from Allmodels, including Allmodels Account API, Allmodels Allmodels API and Allmodels Custom Voices API, and 4 more.

Is there an OpenAPI specification for the Allmodels API?

Yes. APIs.io indexes 7 OpenAPI specifications for Allmodels, each linked for download from this page.

How do I authenticate with the Allmodels API?

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

How much does the Allmodels API cost?

Allmodels publishes its prices; its Pay as you Go plan is 5.5% as of 2026-10-15. APIs.io lists 2 pricing plans for Allmodels, with each plan's price, limits and inclusions under Pricing on this page.

Is the Allmodels API ready for AI agents?

Allmodels has a Kin Score of 28.8 out of 100 (thin) and an Agent Readiness score of 23.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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