FLUX.2 [klein] Base 4B API model, prices & limits

FLUX.2 [klein] Base 4B

Developer: Black Forest Labs · Black Forest Labs · API model

Open weights require local compute. No free hosted API is implied. Open weights only; no official hosted API price is verified. No verified public API price. Unknown amounts are not zero.

Catalog information only; CreditsPlan does not run inference with this model.

API models and prices · 1

Usage-based billing: text rates are usually per million tokens; other units and tiers are stated per entry. Compare only the same currency, unit and billing conditions. Unverified cache pricing does not mean free.

FLUX.2 [klein] Base 4B

Model developer: Black Forest Labs · Service provider: Self-hosted

Model family: FLUX.2 · Model catalog only; see service-channel quotes

Open weights require local compute. No free hosted API is implied. Open weights only; no official hosted API price is verified. No verified public API price. Unknown amounts are not zero.

Aliases: BFL · FLUX · Flux AI · FLUX.1 · FLUX.2 · FLUX 3 · FLUX.2 [klein] Base 4B · flux-2-klein-base-4b

Input / output modalities: text, image → image

Open weights / self-hosted

Requires your own compute and license compliance; does not imply a free hosted API.

4B parameters. Commercial use is subject to the linked license and eligibility conditions. Fine-tuning: permitted under license. LoRA: permitted under license. Local compute costs are separate; open weights do not provide a free hosted API.

Official source · Last verified: 2026-10-15T09:49:50.992Z

Service channels / prices and conditions

No eligible channel for this model yet. The official model price above remains available.

服务渠道 / 价格与条件

暂无可公开的匹配渠道；上方官方模型价格仍可查看。