Question 1

What is FLUX 3 Dev?

Accepted Answer

FLUX 3 Dev is the faster, lower-cost variant of Black Forest Labs' FLUX 3 frontier model, expected to also receive an open-weight release later in 2026.

Question 2

How does FLUX 3 Dev differ from the flagship FLUX 3 model?

Accepted Answer

FLUX 3 Dev trades a small amount of peak image fidelity for significantly reduced latency and cost, following the same pattern as FLUX.1 Dev and FLUX.2 Dev relative to their Pro counterparts.

Question 3

Will FLUX 3 Dev be open-weight?

Accepted Answer

Black Forest Labs has announced plans to release faster, open-weight versions of FLUX 3 later in 2026, consistent with its open-access strategy for prior FLUX generations.

Question 4

Is FLUX 3 Dev available now?

Accepted Answer

Not yet — Black Forest Labs is rolling out FLUX 3 in phases starting with Video and Action, followed by Image. Muapi will activate this endpoint as soon as it is publicly available.

Question 5

Who should use FLUX 3 Dev instead of the full FLUX 3 model?

Accepted Answer

Anyone prioritizing speed and cost over absolute peak fidelity — rapid prototyping, high-volume batch jobs, and cost-sensitive production pipelines.

Question 6

How much will FLUX 3 Dev cost per generation?

Accepted Answer

Black Forest Labs has not published pricing yet. Muapi will update this page with confirmed rates as soon as they're announced, following the same pay-per-generation model as other FLUX variants.