FLUX 3 Pricing: API Rates for FLUX 3 Image and Klein

FLUX 3 pricing starts at $0.009 per 1K image for FLUX 3 Image Klein and $0.048 per 1K image for FLUX 3 Image.

On the Black Forest Labs (BFL) application programming interface (API), FLUX 3 Image costs $0.041 to $0.607 per image by output resolution. FLUX 3 Image Klein runs $0.008 to $0.036 across the same resolution tiers.

Eligible developers and organizations with under $5 million in annual revenue can also download and self-host the Klein model weights with zero software license fees.

FLUX 3 Pricing per Image by Model and Resolution

FLUX 3 pricing per image scales across five standardized pixel area tiers ranging from 768sq up to 4K resolution on the official Black Forest Labs API.

As of October 2026, standard 1K generations cost $0.048 per image on FLUX 3 Image and $0.009 per image on FLUX 3 Image Klein.

As of October 16, 2026, Black Forest Labs' pricing docs list these rates.

Both models maintain identical pricing across varied aspect ratios, including 1:1, 16:9, 21:9, 3:2, and portrait orientations.

Black Forest Labs structures resolution tiers around total pixel volume rather than raw aspect dimensions, meaning wide and tall renders bill at the tier matching their total area.

Text-to-image and editing requests on FLUX 3 Image Klein share the exact same generation price across every resolution class.

Generation Budgets for One Thousand Images

Generating one thousand images at standard 1K resolution costs $48.00 on FLUX 3 Image and $9.00 on FLUX 3 Image Klein based on published API rates.

The same $48 buys about 5,333 1K images on Klein.

At 4K, FLUX 3 Image costs about 17 times as much per image as Klein.

Generating one thousand 4K images on FLUX 3 Image totals $607.00, whereas generating one thousand 4K images on FLUX 3 Image Klein totals $36.00.

The $0.607 fee on FLUX 3 Image buys native 4K output. BFL's own 4K example is 5456 x 3072 pixels (16.8 MP).

The jump from 2K to 4K is the largest price step on FLUX 3 Image.

On FLUX 3 Image, rendering at 2K costs $0.100 per image ($100.00 per thousand), while moving to 4K costs $0.607 per image ($607.00 per thousand).

That transition represents a sixfold increase in cost for a fourfold expansion in pixel count.

The FLUX 3 Image explained guide covers how the model works.

Free Access Options and FLUX 3 Pricing Rules

Black Forest Labs does not offer a free tier or free promotional credits for API generation on the official pricing page.

Every API and Playground generation is billed in credits.

The only route with no per-image fee is self-hosting FLUX 3 Image Klein on owned or rented GPUs.

The FLUX Kommunity License allows free commercial use of FLUX 3 Image Klein for individuals and companies with annual revenue under $5 million, and permits research and non-commercial use.

Qualifying organizations can download the distilled or base model weights directly from Hugging Face without paying software licensing fees.

Organizations with annual revenue exceeding $5 million must purchase a commercial self-hosted license directly from Black Forest Labs sales or use the paid API.

Self-hosting eliminates software fees, but operators must cover their own cloud graphics processing unit (GPU) rental or local hardware expenses.

Black Forest Labs says the 8-bit integer (INT8) build of Klein runs on NVIDIA GeForce RTX GPUs with as little as 8 gigabytes of video random-access memory (VRAM). That figure covers the image generator only. BFL's prompt upsampler, which it says Klein needs for full quality, adds about 28 gigabytes of GPU memory when run locally.

In contrast, the flagship FLUX 3 Image model has no public open weights and requires a private commercial weights license negotiated directly through Black Forest Labs.

API Billing Mechanics and Account Credits

Black Forest Labs operates a pay as you go credit system where one account credit equals exactly one cent ($0.01).

The API charges no subscription or seat fee.

Pricing remains identical whether tasks run programmatically through the API or interactively inside the FLUX tools playground.

On FLUX 3 Image Klein, image editing and text-to-image bill at the same rate per resolution tier.

Each model has one API endpoint (for example, POST https://api.bfl.ai/v1/flux-3-image) that handles both text-to-image and editing. Results come back as a signed uniform resource locator (URL) that expires after one hour, so download each image within that hour.

Third-party resellers list FLUX 3 Image at their own prices, which can differ from BFL's.

Comparison of FLUX 3 Pricing and FLUX.2 Rates

FLUX 3 bills by fixed resolution tier, while FLUX.2 bills by the megapixel.

For example, FLUX.2 [pro] bills $0.030 for the first megapixel plus $0.015 for each additional megapixel up to a 4 MP cap.

At standard 1 MP resolution, a single image on FLUX.2 [pro] costs $0.030 compared to $0.048 on FLUX 3 Image and $0.009 on FLUX 3 Image Klein.

FLUX 3 Image Klein lowers the entry cost for 1 MP generation by seventy percent compared to FLUX.2 [pro].

Conversely, the flagship FLUX 3 Image represents a sixty percent price increase over FLUX.2 [pro] at 1 MP.

Black Forest Labs maintains active snapshot endpoints for FLUX.2 models to preserve reproducible production pipelines.

Earlier models such as FLUX.2 [flex] at $0.050 per MP and FLUX.2 [max] at $0.070 for the first MP remain on Black Forest Labs' price list.

The quality differences are covered in FLUX 3 Image vs FLUX.2, and the wider model family in FLUX explained.

Overview of FLUX 3 Video Rates

FLUX 3 Video bills on a per-second duration model rather than per-image generation charges.

Standard text-to-video and image-to-video processing costs $0.15 per second at 720p, $0.24 per second at 1080p, $0.28 per second at 1440p, and $0.41 per second at 2160p.

Video continuation costs $0.21 per second at 720p up to $0.45 per second at 2160p. Draft mode costs $0.06 per second at 720p.

The FLUX 3 video pricing guide breaks down every per-second rate.

Cheapest Deployment Routes for Production Teams

The cheapest FLUX 3 route depends on how many images you generate, your annual revenue, and whether you already have GPUs.

These picks change if Black Forest Labs moves its per-image rates or the $5 million revenue line in the FLUX Kommunity License. Current figures are in the pricing docs and the Klein launch post.

If you rent cloud GPUs to self-host Klein, compare that rental cost against $9 per 1,000 1K images on the Klein API.

Audit your team's monthly image generation volume and target resolutions before purchasing API credits to secure the lowest overall FLUX 3 pricing.

• Self-host FLUX 3 Image Klein locally under the FLUX Kommunity License if your organization earns under $5M in annual revenue and owns compatible GPU hardware.
• Call the FLUX 3 Image Klein API at $0.009 per 1K image for fast generation at the lowest API price tier.
• Use the FLUX 3 Image API at $0.048 to $0.100 per image if Klein's results fall short in your tests, since Klein already supports bounding boxes, 10 reference images and 4K output.
• Reserve 4K generation at $0.607 on FLUX 3 Image for outputs where native 16.8 MP resolution is necessary.
• Contact Black Forest Labs sales for a FLUX 3 Image commercial weights license if your company needs to fine-tune or self-host FLUX 3 Image at scale.