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Models/Black Forest Labs/FLUX.2 API
LiveBlack Forest Labs · FLUX.2 family20 endpoints

FLUX.2 API — Generation, Editing, Klein & LoRA

Use FLUX.2 on Muapi for Dev, Flex, Pro, Klein 4B, Klein 9B, Turbo, LoRA support, and style training endpoints through one asynchronous API.

Get a FLUX.2 API KeyTry FLUX.2 Pro
FLUX.2 ProHigh-quality generation and editing2 models
Text to ImageLiveFeatured
Pro

FLUX 2 Pro

FLUX.2 FLUX 2 Pro is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

Image
$0.032/request
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Image EditingLive
Pro

FLUX 2 Pro Edit

FLUX.2 FLUX 2 Pro Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

Image
$0.032/request
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FLUX.2 FlexFlexible quality and control2 models
Text to ImageLive
Flex

FLUX 2 Flex

FLUX.2 FLUX 2 Flex is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

Image
$0.09/request
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Image EditingLive
Flex

FLUX 2 Flex Edit

FLUX.2 FLUX 2 Flex Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

Image
$0.09/request
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FLUX.2 DevCore generation and editing2 models
Text to ImageLiveFeatured
Dev

FLUX 2 Dev

FLUX.2 FLUX 2 Dev is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

Image
$0.015/request
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Image EditingLive
Dev

FLUX 2 Dev Edit

FLUX.2 FLUX 2 Dev Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

Image
$0.031/request
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FLUX.2 Klein 4BCompact generation and editing2 models
Text to ImageLive
Klein 4B

FLUX 2 Klein 4b

FLUX.2 FLUX 2 Klein 4b is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

Image
$0.0104/request
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Image EditingLive
Klein 4B

FLUX 2 Klein 4b Edit

FLUX.2 FLUX 2 Klein 4b Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

Image
$0.0156/request
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FLUX.2 Klein 9BLarger Klein generation and editing2 models
Text to ImageLive
Klein 9B

FLUX 2 Klein 9b

FLUX.2 FLUX 2 Klein 9b is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

Image
$0.013/request
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Image EditingLive
Klein 9B

FLUX 2 Klein 9b Edit

FLUX.2 FLUX 2 Klein 9b Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

Image
$0.0208/request
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FLUX.2 Klein 4B TurboFast compact generation2 models
Text to ImageLive
Klein 4B Turbo

FLUX 2 Klein 4b Turbo

FLUX.2 FLUX 2 Klein 4b Turbo is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

ImageFast
$0.0052/request
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Image EditingLive
Klein 4B Turbo

FLUX 2 Klein 4b Turbo Edit

FLUX.2 FLUX 2 Klein 4b Turbo Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

ImageFast
$0.0078/request
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FLUX.2 Klein 9B TurboFast larger generation2 models
Text to ImageLive
Klein 9B Turbo

FLUX 2 Klein 9b Turbo

FLUX.2 FLUX 2 Klein 9b Turbo is a live Muapi endpoint for text-to-image. Submit it with one API key and poll the shared result endpoint.

ImageFast
$0.0065/request
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Image EditingLive
Klein 9B Turbo

FLUX 2 Klein 9b Turbo Edit

FLUX.2 FLUX 2 Klein 9b Turbo Edit is a live Muapi endpoint for image editing. Submit it with one API key and poll the shared result endpoint.

ImageFast
$0.0104/request
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FLUX.2 LoRA supportApply custom LoRAs4 models
LoRA SupportLive
LoRA Support

FLUX 2 Klein 4b Text To Image LoRA

FLUX.2 FLUX 2 Klein 4b Text To Image LoRA is a live Muapi endpoint for LoRA inference. Submit it with one API key and poll the shared result endpoint.

Image
$0.02/request
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LoRA SupportLive
LoRA Support

FLUX 2 Klein 9b Text To Image LoRA

FLUX.2 FLUX 2 Klein 9b Text To Image LoRA is a live Muapi endpoint for LoRA inference. Submit it with one API key and poll the shared result endpoint.

Image
$0.025/request
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LoRA SupportLive
LoRA Support

FLUX 2 Klein 4b Edit LoRA

FLUX.2 FLUX 2 Klein 4b Edit LoRA is a live Muapi endpoint for LoRA inference. Submit it with one API key and poll the shared result endpoint.

Image
$0.025/request
Try Model
LoRA SupportLive
LoRA Support

FLUX 2 Klein 9b Edit LoRA

FLUX.2 FLUX 2 Klein 9b Edit LoRA is a live Muapi endpoint for LoRA inference. Submit it with one API key and poll the shared result endpoint.

Image
$0.03/request
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FLUX.2 style trainingTrain custom style LoRAs2 models
TrainingLive
Style Training

FLUX 2 Klein 4b Style LoRA Trainer

FLUX.2 FLUX 2 Klein 4b Style LoRA Trainer is a live Muapi endpoint for LoRA training. Submit it with one API key and poll the shared result endpoint.

LoRA weights
$4.50/request
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TrainingLive
Style Training

FLUX 2 Klein 9b Style LoRA Trainer

FLUX.2 FLUX 2 Klein 9b Style LoRA Trainer is a live Muapi endpoint for LoRA training. Submit it with one API key and poll the shared result endpoint.

LoRA weights
$4.00/request
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What is the FLUX.2 API?

FLUX.2 is the newer Black Forest Labs image family with Dev, Flex, Pro, and compact Klein variants. Muapi exposes generation and editing endpoints under one API key.

Choose Pro or Flex for higher-quality work, Dev for the core workflow, Klein for compact inference, and Turbo when latency matters. LoRA support and style training are included.

FLUX.2 API capabilities

Generation and editing

Use Dev, Flex, Pro, and Klein endpoints for prompt-first and reference-driven images.

Compact Klein models

Compare 4B, 9B, and Turbo Klein variants for speed and cost.

LoRA support

Apply custom text-to-image and edit LoRAs at inference time.

Style training

Train Klein style LoRAs with the listed trainer endpoints.

Quick start — FLUX.2 API

Submit a FLUX.2 image task with JSON, save the request ID, and poll the standard result endpoint.

1. Submit a FLUX.2 job

curl -X POST https://api.muapi.ai/api/v1/flux-2-pro \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"A premium fashion campaign in a brutalist gallery","aspect_ratio":"16:9"}'

# Response: {"request_id":"REQUEST_ID"}

The example uses FLUX.2 Pro text-to-image; switch slugs for editing or Klein variants.

2. Poll the result

curl https://api.muapi.ai/api/v1/predictions/REQUEST_ID/result \
  -H "x-api-key: YOUR_API_KEY"

Read the completed image URL from outputs.

FLUX.2 API FAQ

What is the difference between FLUX.1 and FLUX.2?

FLUX.2 is the newer family with Pro, Flex, Dev, Klein, Turbo, LoRA support, and style training variants.

What are FLUX.2 Klein models?

Klein 4B and 9B variants provide compact generation and editing choices, with Turbo options for faster iteration.

Can FLUX.2 use LoRAs?

Yes. The catalog includes text-to-image and edit LoRA endpoints plus style trainers.

Explore FLUX.1 API →Browse the original FLUX image family.Explore FLUX Kontext API →Browse the separate Kontext editing family.Compare AI image APIs →See FLUX.2 with every image API.

Build with FLUX.2

Connect FLUX.2 generation, editing, Klein, Turbo, and LoRA workflows through one API key.

Get an API KeyTry FLUX.2