Skip to content
ProviderBench home

Black Forest Labs: FLUX.2 Klein 4B provider comparison

black-forest-labs/flux.2-klein-4b

FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality. Pricing is based on the output...

Endpoints:
1
Context:
41K
Input:
text, image
Output:
image

Visual comparison

Endpoint pricing chart

Compare published endpoint pricing visually.

Effective price by endpoint

USD per megapixel for output image. Lower is better.

Only directly comparable published units are charted.

Server-rendered comparison

Provider endpoints

Image prices use OpenRouter’s dedicated endpoint billing records and retain their published units. Missing speed data never removes an endpoint.

Endpoint comparison for Black Forest Labs: FLUX.2 Klein 4B
Provider / routeCurrent pricingSpeed measurementsEndpoint details
Provider / route
Black Forest Labsblack-forest-labs
Current pricing
  • $0.014 per megapixel (output image)
Speed measurements
500-token response
Not applicable
Response starts
Insufficient recent data
Output speed
Insufficient recent data
Endpoint details
Uptime (30 min)
Insufficient recent data
Context
41K
Model format
N/a
Max output
N/a
4 parameters

input_references, n, output_format, seed

Endpoint data fetched .

FLUX.2 Klein 4B deployment guide

How to choose a FLUX.2 Klein 4B inference provider

FLUX.2 Klein 4B is indexed here as a image model by Black Forest Labs, with 1 provider endpoint from Black Forest Labs. The comparison preserves each exact OpenRouter routing tag so pricing and performance observations can be connected to the route an application would actually request.

Match the endpoint to the workload

The model publishes a 41K-token context window. It accepts text, image input and returns image output. 4 distinct supported parameters appear across the listed routes. Confirm limits on the specific endpoint rather than assuming every host exposes the same configuration.

Compare image billing units directly

At least one megapixel is published consistently across the listed endpoints, allowing a direct price chart for output image. Other charges remain in the table using OpenRouter’s exact billing labels.

Verify route format and availability

No model-format or quantization labels are currently published. Availability, rate limits, and regional support can change independently of catalog pricing, so confirm the selected routing tag before production deployment.