FLUX by Black Forest Labs review

Black Forest Labs makes the FLUX models, which also appear inside Firefly, Recraft and Leonardo.ai, and it sells them directly through an API with no subscription or seat fees. FLUX 3 Image handles text to image and image to image, with prices of $0.041 per image at 768 by 768, $0.048 at 1K and $0.10 at 2K, while the smaller FLUX 3 Image Klein runs from $0.008 per image and is available as open weights. FLUX.2 and Kontext models add reference-image editing, and separate tools cover outpainting, object removal, deblurring and upscaling. Larger companies can license open weights to run models on their own infrastructure, and BFL lists SOC 2 Type II and ISO 27001 certification. For a marketing team this is a building block, not an app: there is a browser playground for testing, but no editor, brand kit or asset library. Teams that want FLUX without code can reach it inside Firefly, Recraft or Leonardo.ai.

Who it is for

Product and engineering teams building image generation into their own marketing or creative tools.

Price

Pay as you go with no subscription: FLUX 3 Image from $0.041 per 768 × 768 image and $0.048 at 1K.

FLUX 3 Image 768 × 768 $0.041 /img 1K $0.048 /img
Quoted from the vendor pricing page on November 6, 2026.

Key features

• FLUX 3 Image for text to image and image to image
• FLUX 3 Image Klein open-weights model from $0.008 per image
• FLUX.2 and Kontext models for editing and reference images
• Tools for outpainting, erase, deblur and upscaling
• Open-weights licensing for self-hosting

Strengths and weaknesses

• Strength: No subscriptions or seat fees
• Strength: SOC 2 Type II and ISO 27001 certified, per BFL
• Strength: Browser playground for testing prompts
• Weakness: Built for developers rather than marketers
• Weakness: 4K output costs far more per image
• Weakness: No design editor, brand kit or asset library

Key facts

• Free plan: No, pay as you go
• FLUX 3 Image: $0.041 at 768 × 768, $0.048 at 1K, $0.10 at 2K
• FLUX 3 Image Klein: From $0.008 per image
• Open weights: Licensing available for self-hosting
• Security: SOC 2 Type II and ISO 27001

Where it ranks

FLUX by Black Forest Labs is No. 9 in our Best AI Image Generators verdict.