CometAPI

CometAPI is an AI API aggregator that consolidates access to 500+ models from multiple providers (OpenAI, Anthropic, Google, xAI, DeepSeek, Alibaba, and more) behind a single OpenAI-compatible REST surface. It supports chat completions, embeddings, image generation, text-to-video and image-to-video, speech synthesis, and audio transcription. CometAPI positions itself as a drop-in replacement for the OpenAI SDK (changing only the base URL and key), with pay-as-you-go pricing reportedly 20-40% cheaper than direct vendor rates, sub-400ms median latency, and 99.9% service availability.

CometAPI publishes 6 API contracts indexed on the APIs.io network, including Audio API, Embeddings API, Images API, and 3 more. Tagged areas include Artificial Intelligence, Aggregator, Audio, Chat, and Embeddings.

The CometAPI catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

CometAPI’s developer surface includes authentication, documentation, getting-started guide, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.6/100 thin ▬ flat Agent 24/100 agent aware Front door AI 6/6 dominant Heartbeat 78/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 published contracts

Artificial Intelligence Aggregator Audio Chat Embeddings Generative AI Image LLM Multi-Model OpenAI-Compatible Video

Kin Score

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

Composite quality — 30.6/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 2.4 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.0 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 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
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
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

9 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 15.8 — up to +16.8 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Contract Quality scores 51.2 — up to +12.2 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/cometapi/apis.yml: open an issue on github.com/api-evangelist/cometapi 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
Raycast Store Extensions (first-party publishers + community-wrapped products)	covered	29.3	-	1

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 2

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.

The OpenAI Interface reaches extended

declared — publishes a spec that declares them

2 core of 338 operations graded · api-commons/models

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

CometAPI Audio API

Speech synthesis, transcription, and translation.

CometAPI Embeddings API

Vector embeddings for retrieval and similarity.

CometAPI Images API

Text-to-image and image-to-image generation.

CometAPI Models API

List of supported models routable by CometAPI.

CometAPI Video API

Text-to-video, image-to-video, and video extension.

CometAPI Chat Completions API

Chat completions across LLM providers.

Open Collections 7

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

CometAPI Unified Audio API

OPEN COLLECTION

CometAPI Unified Audio Chat API

OPEN COLLECTION

CometAPI Unified Audio Embeddings API

OPEN COLLECTION

CometAPI Unified Audio Images API

OPEN COLLECTION

CometAPI Unified Audio Models API

OPEN COLLECTION

CometAPI Unified API

OPEN COLLECTION

CometAPI Unified Audio Video API

OPEN COLLECTION

Scroll for all 7

CometAPI pricing

Not yet checked against CometAPI's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against CometAPI's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Cometapi Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cometapi Rate Limits

5 limits

RATE LIMITS

Service Levels 1

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

CometAPI

SLA

FinOps 1

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

Cometapi Finops

FINOPS

Semantic Vocabularies 1

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

Cometapi Context

0 classes · 4 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

CometAPI — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

CometAPI API Rules

9 rules · 4 errors 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

CometAPI Chat Completion Response

6 properties

JSON SCHEMA

Security Posture 3

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

Cometapi Authentication

http · 1 scheme

SECURITY

Cometapi Domain Security

TLSv1.3 · DMARC

SECURITY

Cometapi Trust Center

trust center published

SECURITY

Agentic Access 1

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

Cometapi Agentic Access

7 operations · 6 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

JSONSchema

JSONSchema

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Spectral

Spectral

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: cometapi
url: https://raw.githubusercontent.com/api-evangelist/cometapi/refs/heads/main/apis.yml
name: CometAPI
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-24
x-docs-hosting: vercel
tags:
- Artificial Intelligence
- Aggregator
- Audio
- Chat
- Embeddings
- Generative AI
- Image
- LLM
- Multi-Model
- OpenAI-Compatible
- Video
tags_raw:
- AI
- Aggregator
- Audio
- Chat
- Embeddings
- Generative AI
- Images
- LLM
- Multi-Model
- OpenAI-Compatible
- Video
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cometapi.png
access: 3rd-Party
kind: company
created: '2026-03-16'
modified: '2026-05-19'
position: Consuming
description: CometAPI is an AI API aggregator that consolidates access to 500+ models from multiple providers (OpenAI, Anthropic,
  Google, xAI, DeepSeek, Alibaba, and more) behind a single OpenAI-compatible REST surface. It supports chat completions,
  embeddings, image generation, text-to-video and image-to-video, speech synthesis, and audio transcription. CometAPI positions
  itself as a drop-in replacement for the OpenAI SDK (changing only the base URL and key), with pay-as-you-go pricing reportedly
  20-40% cheaper than direct vendor rates, sub-400ms median latency, and 99.9% service availability.
apis:
- aid: cometapi:cometapi-audio-api
  name: CometAPI Audio API
  description: Speech synthesis, transcription, and translation.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Audio
  properties:
  - type: OpenAPI
    url: openapi/cometapi-audio-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
- aid: cometapi:cometapi-embeddings-api
  name: CometAPI Embeddings API
  description: Vector embeddings for retrieval and similarity.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Embeddings
  properties:
  - type: OpenAPI
    url: openapi/cometapi-embeddings-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
- aid: cometapi:cometapi-images-api
  name: CometAPI Images API
  description: Text-to-image and image-to-image generation.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Image
  tags_raw:
  - Images
  properties:
  - type: OpenAPI
    url: openapi/cometapi-images-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
- aid: cometapi:cometapi-models-api
  name: CometAPI Models API
  description: List of supported models routable by CometAPI.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/cometapi-models-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
- aid: cometapi:cometapi-video-api
  name: CometAPI Video API
  description: Text-to-video, image-to-video, and video extension.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Video
  properties:
  - type: OpenAPI
    url: openapi/cometapi-video-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
- aid: cometapi:cometapi-chat-completions-api
  name: CometAPI Chat Completions API
  description: Chat completions across LLM providers.
  humanURL: https://apidoc.cometapi.com/
  baseURL: https://api.cometapi.com/v1
  tags:
  - Chat Completions
  properties:
  - type: OpenAPI
    url: openapi/cometapi-chat-completions-api-openapi.yml
  - type: Documentation
    url: https://apidoc.cometapi.com/
  - type: Marketing
    url: https://www.cometapi.com/
common:
- type: Plans
  url: plans/cometapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/cometapi-rate-limits.yml
- type: FinOps
  url: finops/cometapi-finops.yml
- type: AgenticAccess
  url: agentic-access/cometapi-agentic-access.yml
- type: TrustCenter
  url: security/cometapi-trust-center.yml
- type: DomainSecurity
  url: security/cometapi-domain-security.yml
- type: Authentication
  url: authentication/cometapi-authentication.yml
- type: GitHubOrganization
  url: https://github.com/CometAPI-dev
- type: LinkedIn
  url: https://www.linkedin.com/company/cometapi
- type: Website
  url: https://www.cometapi.com/
- type: Documentation
  url: https://apidoc.cometapi.com/
- type: HelpCenter
  url: https://apidoc.cometapi.com/help-center
- type: GettingStarted
  url: https://apidoc.cometapi.com/how-to-use-cometapi-1792005m0
- url: json-ld/cometapi-context.jsonld
  type: JSONLD
- url: json-schema/cometapi-chat-completion-schema.json
  type: JSONSchema
- url: rules/cometapi-rules.yml
  type: Spectral
- type: LlmsText
  url: https://www.cometapi.com/llms.txt
- url: https://www.cometapi.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

CometAPI — frequently asked questions

Does CometAPI have an API?

Yes. APIs.io lists 6 APIs from CometAPI, including CometAPI Audio API, CometAPI Embeddings API and CometAPI Images API, and 3 more.

Is there an OpenAPI specification for the CometAPI?

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

How do I authenticate with the CometAPI?

CometAPI uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Cometapi Authentication.

How much does the CometAPI cost?

APIs.io lists 3 pricing plans for CometAPI, with each plan's price, limits and inclusions under Pricing on this page.

Is the CometAPI ready for AI agents?

CometAPI has a Kin Score of 30.6 out of 100 (thin) and an Agent Readiness score of 23.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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