Black Forest Labs

Black Forest Labs is the company behind the Flux family of image generation models. The Flux API exposes asynchronous image generation endpoints via global and regional base URLs with model-named paths (e.g. /v1/flux-2-pro). Models include FLUX.2 (flex/pro/max/klein), FLUX.1 Kontext, FLUX1.1 [pro] Ultra, FLUX1.1 [pro], FLUX.1 Fill, and FLUX Schnell. Auth via BFL_API_KEY bearer token.

Black Forest Labs publishes 3 APIs on the APIs.io network: Editing API, Generation API, and Utility API. Tagged areas include Artificial Intelligence, Image-Generation, Flux, Open Weights, and BFL.

Black Forest Labs’ developer surface includes authentication, documentation, GitHub presence, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.2/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

1 APIs

Artificial Intelligence Image-Generation Flux Open WeightsBFL

Kin Score

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

Composite quality — 33.2/100 · thin

Contract Quality 11.5 / 23

Developer Ergonomics 4.3 / 18

Access Clarity 6.6 / 18

Operational Transparency 1.2 / 12

Contract Governance 0.0 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · 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 0 / 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

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/black-forest-labs: 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 4

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

Flux Image Generation API

REST API for asynchronous image generation across the Flux model family. Submit a generation request, then poll the returned polling_url for the result. Global endpoint at https...

Black Forest Labs Editing API

Image editing tools (fill, expand, erase).

Black Forest Labs Generation API

Image generation endpoints.

Black Forest Labs Utility API

Result polling, credits, fine-tune management.

Open Collections 5

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

API Collection

OPEN COLLECTION

Black Forest Labs FLUX Editing API

OPEN COLLECTION

Black Forest Labs FLUX Editing Generation API

OPEN COLLECTION

Black Forest Labs FLUX Editing Utility API

OPEN COLLECTION

Black Forest Labs FLUX API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Black Forest Labs Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Black Forest Labs Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Black Forest Labs Finops

FINOPS

Security Posture 2

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

Black Forest Labs Authentication

apiKey · 1 scheme

SECURITY

Black Forest Labs Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Black Forest Labs Agentic Access

13 operations · 9 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

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: black-forest-labs
url: https://raw.githubusercontent.com/api-evangelist/black-forest-labs/refs/heads/main/apis.yml
name: Black Forest Labs
kind: company
description: Black Forest Labs is the company behind the Flux family of image generation models. The Flux API exposes asynchronous
  image generation endpoints via global and regional base URLs with model-named paths (e.g. /v1/flux-2-pro). Models include
  FLUX.2 (flex/pro/max/klein), FLUX.1 Kontext, FLUX1.1 [pro] Ultra, FLUX1.1 [pro], FLUX.1 Fill, and FLUX Schnell. Auth via
  BFL_API_KEY bearer token.
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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://blackforestlabs.ai/
    status: 301
    note: declared website redirects to https://bfl.ai/ — a different registrable domain (blackforestlabs.ai -> bfl.ai), possible
      rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/black-forest-labs.png
tags:
- Artificial Intelligence
- Image-Generation
- Flux
- Open Weights
- BFL
tags_raw:
- AI
- Image Generation
- Flux
- Open Weights
- BFL
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: black-forest-labs:flux
  name: Flux Image Generation API
  description: REST API for asynchronous image generation across the Flux model family. Submit a generation request, then
    poll the returned polling_url for the result. Global endpoint at https://api.bfl.ai with regional alternatives at https://api.eu.bfl.ai
    (GDPR) and https://api.us.bfl.ai. Model-name path pattern /v1/{model}.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Image-Generation
  - Flux
  - Async
  - Polling
  - Text-to-Image
  - Image Editing
  tags_raw:
  - Image Generation
  - Flux
  - Async
  - Polling
  - Text-to-Image
  - Image Editing
  properties:
  - type: Documentation
    url: https://docs.bfl.ai/
  - type: Signup
    url: https://dashboard.bfl.ai/
  - type: Pricing
    url: https://bfl.ai/pricing
  - type: LlmsText
    url: https://docs.bfl.ml/llms.txt
  - type: GitHub
    url: https://github.com/black-forest-labs/flux
- aid: black-forest-labs:black-forest-labs-editing-api
  name: Black Forest Labs Editing API
  description: Image editing tools (fill, expand, erase).
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Editing
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-editing-api-openapi.yml
- aid: black-forest-labs:black-forest-labs-generation-api
  name: Black Forest Labs Generation API
  description: Image generation endpoints.
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Generation
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-generation-api-openapi.yml
- aid: black-forest-labs:black-forest-labs-utility-api
  name: Black Forest Labs Utility API
  description: Result polling, credits, fine-tune management.
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Utility
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-utility-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/black-forest-labs-agentic-access.yml
- type: DomainSecurity
  url: security/black-forest-labs-domain-security.yml
- type: Authentication
  url: authentication/black-forest-labs-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/bflai
- type: Website
  url: https://blackforestlabs.ai/
- type: Documentation
  url: https://docs.bfl.ai/
- type: GitHub
  url: https://github.com/black-forest-labs
- type: Plans
  url: plans/black-forest-labs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/black-forest-labs-rate-limits.yml
- type: FinOps
  url: finops/black-forest-labs-finops.yml
- type: Blog
  url: https://bfl.ai/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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