FLUX.2 Klein 4B

Black Forest Labs · image

Pricing: $0.02 per megapixel

FLUX.2 Klein 4B (per-megapixel).

Pricing

$0.0196 per megapixel. Billing is per megapixel, not per token: each megapixel is charged at this rate, from one llmka.dev balance.

Prices checked 2026-11-04

Context and limits

The context window is not listed in the catalog snapshot; check the model documentation for the current limit.

The maximum output length is not listed in the catalog snapshot.

When to use FLUX.2 Klein 4B

FLUX.2 Klein 4B (model ID `flux.2-klein-4b`) takes text input and returns image output.

Supported features in the catalog: JSON-schema structured output.

Use FLUX.2 Klein 4B for image generation or editing.

FAQ

How much does FLUX.2 Klein 4B cost?

$0.0196 per megapixel. Billing is per megapixel, not per token: each megapixel is charged at this rate, from one llmka.dev balance.

What is the context window and output limit of FLUX.2 Klein 4B?

The context window is not listed in the catalog snapshot; check the model documentation for the current limit. The maximum output length is not listed in the catalog snapshot.

How do I get access to FLUX.2 Klein 4B?

Create an API key in the llmka.dev dashboard and send requests to model "flux.2-klein-4b" at https://api.llmka.dev/v1. The endpoint is OpenAI-compatible. One key and one balance cover all models on the gateway.

Links

All models and prices · API documentation · Quick start

Available through the llmka.dev gateway: OpenAI- and Anthropic-compatible endpoints, one key, USDT top-up.