Multiverse Computing

Multiverse Computing, S.L. is a Donostia-San Sebastian (Spain) quantum- and AI-software company whose commercial developer surface is the CompactifAI API — an OpenAI-compatible LLM inference service serving tensor-network-compressed versions of frontier open models (Hypernova 60B, Carina 60B, Mistral Small 3.1 Slim, Whisper Large V3 Turbo Slim) alongside uncompressed third-party models (GPT-OSS 120B, GLM 5.1/5.2, Quasar 438B, Qwen 3.6 27B, Nemotron 3 Nano Omni). The API is published at api.compactif.ai with regional EU and US endpoints, documented at docs.compactif.ai, billed pay-as-you-go per million tokens, and also sold through the AWS Marketplace. The company additionally sells Singularity, a quantum and quantum-inspired optimization product for finance, energy and manufacturing, which has no public developer documentation.

Multiverse Computing publishes 6 APIs on the APIs.io network, including Audio API, Batches API, Completions API, and 3 more. Tagged areas include Artificial Intelligence, Machine Learning, Inference, Model Compression, and Quantum Computing.

Multiverse Computing’s developer surface includes authentication, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

47.9/100 developing ▬ flat Agent 28/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

2 APIs

Artificial Intelligence Machine Learning InferenceModel CompressionQuantum Computing Speech-to-Text OpenAI-Compatible Developer Tools Spain Company

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 47.9/100 · developing

Contract Quality 9.0 / 19

Developer Ergonomics 8.8 / 15

Access Clarity 8.9 / 15

Operational Transparency 3.1 / 10

Contract Governance 0.4 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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

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/.

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 github.com/api-evangelist/multiverse-computing: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Interfaces this provider implements that became standards by being copied rather than ratified. Each is profiled by the API Commons, and the evidence column says how the 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

APIs 6

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

Multiverse Computing Audio API

The audio API from Multiverse Computing — 1 operation(s) for audio.

Multiverse Computing Batches API

The batches API from Multiverse Computing — 3 operation(s) for batches.

Multiverse Computing Completions API

The completions API from Multiverse Computing — 2 operation(s) for completions.

Multiverse Computing Files API

The files API from Multiverse Computing — 2 operation(s) for files.

Multiverse Computing Model info API

The Model info API from Multiverse Computing — 2 operation(s) for model info.

Multiverse Computing Responses API

The responses API from Multiverse Computing — 2 operation(s) for responses.

Pricing Plans 1

Published pricing tiers and plan structures.

Multiverse Computing Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Multiverse Computing Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Multiverse Computing Authentication

http · 1 scheme

SECURITY

Multiverse Computing Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Examples

Examples

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 6

Status, limits, changes, and where to get help

Support

Community

StatusPage

ChangeLog

RateLimits

ReleaseNotes

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfUse

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: multiverse-computing
name: Multiverse Computing
description: Multiverse Computing, S.L. is a Donostia-San Sebastian (Spain) quantum- and AI-software company whose commercial
  developer surface is the CompactifAI API — an OpenAI-compatible LLM inference service serving tensor-network-compressed
  versions of frontier open models (Hypernova 60B, Carina 60B, Mistral Small 3.1 Slim, Whisper Large V3 Turbo Slim) alongside
  uncompressed third-party models (GPT-OSS 120B, GLM 5.1/5.2, Quasar 438B, Qwen 3.6 27B, Nemotron 3 Nano Omni). The API is
  published at api.compactif.ai with regional EU and US endpoints, documented at docs.compactif.ai, billed pay-as-you-go per
  million tokens, and also sold through the AWS Marketplace. The company additionally sells Singularity, a quantum and quantum-inspired
  optimization product for finance, energy and manufacturing, which has no public developer documentation.
url: https://raw.githubusercontent.com/api-evangelist/multiverse-computing/refs/heads/main/apis.yml
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: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://multiversecomputing.com/icon.png
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-09-16'
tags:
- Artificial Intelligence
- Machine Learning
- Inference
- Model Compression
- Quantum Computing
- Speech-to-Text
- OpenAI-Compatible
- Developer Tools
- Spain
- Company
tags_raw:
- Artificial Intelligence
- Machine Learning
- LLM Inference
- Model Compression
- Quantum Computing
- Speech to Text
- OpenAI Compatible
- Developer Tools
- Spain
- Company
- Machine-Learning
apis:
- aid: multiverse-computing:multiverse-computing-audio-api
  name: Multiverse Computing Audio API
  description: The audio API from Multiverse Computing — 1 operation(s) for audio.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - Audio
  tags_raw:
  - audio
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-audio-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
- aid: multiverse-computing:multiverse-computing-batches-api
  name: Multiverse Computing Batches API
  description: The batches API from Multiverse Computing — 3 operation(s) for batches.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - Batches
  tags_raw:
  - batches
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-batches-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
- aid: multiverse-computing:multiverse-computing-completions-api
  name: Multiverse Computing Completions API
  description: The completions API from Multiverse Computing — 2 operation(s) for completions.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - Completions
  tags_raw:
  - completions
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-completions-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
- aid: multiverse-computing:multiverse-computing-files-api
  name: Multiverse Computing Files API
  description: The files API from Multiverse Computing — 2 operation(s) for files.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - File
  tags_raw:
  - files
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-files-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
- aid: multiverse-computing:multiverse-computing-model-info-api
  name: Multiverse Computing Model info API
  description: The Model info API from Multiverse Computing — 2 operation(s) for model info.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - Model info
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-model-info-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
- aid: multiverse-computing:multiverse-computing-responses-api
  name: Multiverse Computing Responses API
  description: The responses API from Multiverse Computing — 2 operation(s) for responses.
  humanURL: https://docs.compactif.ai/
  baseURL: https://api.compactif.ai
  tags:
  - Responses
  tags_raw:
  - responses
  properties:
  - type: OpenAPI
    url: openapi/multiverse-computing-responses-api-openapi.yml
  - type: Documentation
    url: https://docs.compactif.ai/introduction/
  - type: APIReference
    url: https://docs.compactif.ai/api_reference/
  - type: GettingStarted
    url: https://docs.compactif.ai/quickstart/
  - type: Examples
    url: examples/multiverse-computing-compactifai-examples.yml
common:
- type: DomainSecurity
  url: security/multiverse-computing-domain-security.yml
- type: Authentication
  url: authentication/multiverse-computing-authentication.yml
- type: Website
  url: https://multiversecomputing.com/
- type: DeveloperPortal
  url: https://docs.compactif.ai/
- type: Documentation
  url: https://docs.compactif.ai/introduction/
- type: APIReference
  url: https://docs.compactif.ai/api_reference/
- type: GettingStarted
  url: https://docs.compactif.ai/quickstart/
- type: Support
  url: https://docs.compactif.ai/support-contact/
- type: Community
  url: https://discord.com/invite/KfqDt3En
- type: Blog
  url: https://multiversecomputing.com/resources
- type: Pricing
  url: https://docs.compactif.ai/pricing/
- type: SignUp
  url: https://auth.multiverseapp.ai/sign-up?redirect_url=https%3A%2F%2Fdashboard.compactif.ai%2F
- type: Login
  url: https://dashboard.compactif.ai/
- type: TermsOfUse
  url: https://multiversecomputing.com/legal-notice
- type: PrivacyPolicy
  url: https://multiversecomputing.com/privacy-policy
- type: StatusPage
  url: https://status.compactif.ai/
- type: Packages
  url: packages/multiverse-computing-packages.yml
- type: LLMsTxt
  url: llms/multiverse-computing-llms.txt
- type: Overlay
  url: overlays/multiverse-computing-compactifai-overlay.yaml
- type: Conformance
  url: conformance/multiverse-computing-conformance.yml
- type: ErrorCatalog
  url: errors/multiverse-computing-problem-types.yml
- type: Lifecycle
  url: lifecycle/multiverse-computing-lifecycle.yml
- type: Conventions
  url: conventions/multiverse-computing-conventions.yml
- type: ChangeLog
  url: changelog/multiverse-computing-changelog.yml
- type: DataModel
  url: data-model/multiverse-computing-data-model.yml
- type: Plans
  url: plans/multiverse-computing-plans-pricing.yml
- type: RateLimits
  url: rate-limits/multiverse-computing-rate-limits.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ReleaseNotes
  url: https://docs.compactif.ai/changelog/
- type: Examples
  url: examples/multiverse-computing-compactifai-examples.yml
- type: OpenAPI
  url: openapi/_original/multiverse-computing-compactifai-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-26'
  status: enriched
  artifacts_added: 22
  pass: local-v1

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