Bytez

Bytez is a unified, serverless model-inference API that gives developers access to 100,000+ open-source and closed-source AI models (from OpenAI, Anthropic, Cohere, Google, Mistral, and the open-source community) through a single API key and one consistent endpoint shape. It covers 30+ task types across text, vision, audio, multimodal, and generation - including chat, embeddings, transcription, image and video generation, translation, and object detection - and offers OpenAI-compatible Chat Completions, Completions, and Responses endpoints plus a LangChain integration. Bytez manages GPU provisioning and scaling behind the scenes and bills on a unified credit system (per second for open models, provider pricing for closed models). It is backed by 500 Global.

Bytez publishes 1 API on the APIs.io network: Models API. Tagged areas include Company, Artificial Intelligence, Machine-Learning, Model Inference, and LLM.

Bytez’s developer surface includes documentation, API reference, getting-started guide, signup flow, pricing, engineering blog, support, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.4/100 developing ▬ flat Agent 29/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Artificial Intelligence Machine-Learning Model Inference LLMOpen Source AIDevelopers

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 41.4/100 · developing

Contract Quality 12.6 / 23

Developer Ergonomics 11.9 / 18

Access Clarity 4.3 / 18

Operational Transparency 1.8 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

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 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

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.

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/bytez: 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 →

APIs 1

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

Bytez Models API

The Models API from Bytez — 3 operation(s) for models.

Open Collections 2

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

API Collection

OPEN COLLECTION

Open Source Model Models API

OPEN COLLECTION

Arazzo Workflows 1

Multi-step API workflows described with the Arazzo specification.

Discover and run a Bytez model

List models for a task, pick one, and run serverless inference.

ARAZZO

Rate Limits 1

Documented rate limits and quota policies.

Bytez Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Bytez Authentication

apiKey · 1 scheme

SECURITY

Bytez Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Bytez Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

AgentSkill

AgenticAccess

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SDKs

SDKs

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Roadmap

Roadmap

Support

Support

StatusPage

StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

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: bytez
name: Bytez
description: Bytez is a unified, serverless model-inference API that gives developers access to 100,000+ open-source and closed-source
  AI models (from OpenAI, Anthropic, Cohere, Google, Mistral, and the open-source community) through a single API key and
  one consistent endpoint shape. It covers 30+ task types across text, vision, audio, multimodal, and generation - including
  chat, embeddings, transcription, image and video generation, translation, and object detection - and offers OpenAI-compatible
  Chat Completions, Completions, and Responses endpoints plus a LangChain integration. Bytez manages GPU provisioning and
  scaling behind the scenes and bills on a unified credit system (per second for open models, provider pricing for closed
  models). It is backed by 500 Global.
url: https://raw.githubusercontent.com/api-evangelist/bytez/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://bytez.com/favicon.png
tags:
- Company
- Artificial Intelligence
- Machine-Learning
- Model Inference
- LLM
- Open Source AI
- Developers
tags_raw:
- Company
- Artificial Intelligence
- Machine Learning
- Model Inference
- LLM
- Open Source AI
- API
- Developers
apis:
- aid: bytez:bytez-models-api
  name: Bytez Models API
  description: The Models API from Bytez — 3 operation(s) for models.
  humanURL: https://docs.bytez.com/model-api/docs/welcome
  baseURL: https://api.bytez.com
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/bytez-models-api-openapi.yml
  - type: Authentication
    url: authentication/bytez-authentication.yml
  - type: ErrorCatalog
    url: errors/bytez-problem-types.yml
  - type: Conventions
    url: conventions/bytez-conventions.yml
  - type: DataModel
    url: data-model/bytez-data-model.yml
  - type: RateLimits
    url: rate-limits/bytez-rate-limits.yml
  - type: Arazzo
    url: arazzo/bytez-discover-and-run.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/bytez-openapi-overlay.yaml
- type: Website
  url: https://bytez.com
- type: DeveloperPortal
  url: https://docs.bytez.com
- type: Documentation
  url: https://docs.bytez.com/model-api/docs/welcome
- type: APIReference
  url: https://docs.bytez.com/http-reference/overview
- type: GettingStarted
  url: https://docs.bytez.com/model-api/docs/get-started
- type: SignUp
  url: https://bytez.com/api
- type: Pricing
  url: https://docs.bytez.com/model-api/docs/billing
- type: Blog
  url: https://docs.bytez.com/company/blog
- type: Roadmap
  url: https://docs.bytez.com/company/roadmap
- type: Support
  url: https://discord.com/invite/Z723PfCFWf
- type: GitHubOrganization
  url: https://github.com/Bytez-com
- type: StatusPage
  url: https://status.bytez.com
- type: SDKs
  url: packages/bytez-packages.yml
- type: Packages
  url: packages/bytez-packages.yml
- type: X-MCPServerCandidate
  url: mcp/bytez-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/bytez-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/bytez-agentic-access.yml
- type: Authentication
  url: authentication/bytez-authentication.yml
- type: Conventions
  url: conventions/bytez-conventions.yml
- type: ErrorCatalog
  url: errors/bytez-problem-types.yml
- type: Lifecycle
  url: lifecycle/bytez-lifecycle.yml
- type: Conformance
  url: conformance/bytez-conformance.yml
- type: DomainSecurity
  url: security/bytez-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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