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Flux vs Stable Diffusion

Flux or Stable Diffusion? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.

In short

  • Both: Commercial use, API
  • Only Flux states: Image to video, Text in images
  • Only Stable Diffusion states: Text to image

Flux

FLUX generates and edits images, video, and audio through a browser playground, API, and downloadable model weights.

Plans

FLUX.2 [max]

  • First MP $0.07
  • Add'l MP $0.03
  • $0.03/MP (REF IMG)
  • Highest visual fidelity across all FLUX.2 models
  • Outputs up to 4 MP resolution
  • Optimized for commercial production work

FLUX.2 [pro]

  • First MP $0.03
  • Add'l MP $0.015
  • $0.015/MP (REF IMG)
  • Strong balance of quality and generation speed
  • Ideal for high-volume professional workflows
  • Supports reference image input

FLUX.2 [klein] 9B

  • First MP $0.015
  • Add'l MP $0.002
  • $0.002/MP (REF IMG)
  • Compact 9B architecture for high throughput
  • Low latency, well-suited to real-time applications
  • Cost-efficient at scale

FLUX.2 [klein] 4B

  • First MP $0.014
  • Add'l MP $0.001
  • $0.001/MP (REF IMG)
  • Ultra-compact 4B model
  • Maximum generation speed
  • Lowest cost per image in the FLUX.2 family

FLUX.2 [flex]

  • $0.05 per megapixel
  • Flexible MP-based billing
  • Pay only for the resolution you generate
  • No per-image minimums

FLUX 3 Video

  • Text / Image → Video, HD, Standard effort — $0.17 per second
  • Text / Image → Video, FHD, Standard effort — $0.29 per second
  • Text / Image → Video, QHD (2K), Standard effort — $0.4 per second
  • Text / Image → Video, UHD (4K), Standard effort — $0.8 per second
  • Video → Video, HD, Standard effort — $0.41 per second
  • Video → Video, FHD, Standard effort — $0.53 per second
  • Video → Video, QHD (2K), Standard effort — $0.65 per second
  • Video → Video, UHD (4K), Standard effort — $0.95 per second
  • Video generation pricing varies by mode, resolution, and effort

FLUX 3 Video Draft

  • Text / Image → Video, HD, Draft effort — $0.06 per second

    FLUX Video Edit [fast]

    • $0.03 per second of output

      FLUX 3 Upscale [precise]

      • $0.07 per megapixel-second

        FLUX 3 Upscale [creative]

        • $0.1 per megapixel-second

          Prices checked 2026-09-25 on the maker’s page.

          Capabilities

          • Image to video — “Image-to-Video and Keyframes: Start with an image, specify an end frame, or set multiple keyframes in a clip.” source
          • Text in images — “highly-accurate text rendering” source
          • Commercial use — “Permissive commercial use” source
          • API — “Simple-to-integrate API to access the latest and most powerful FLUX models.” source

          Security

          • SOC 2 Type II — “Black Forest Labs Inc Report SOC 2 Type 2 12.17.25.pdf” source
          • SOC 2 — “Black Forest Labs Inc Report SOC 2 Type 2 12.17.25.pdf” source
          • ISO 27001 — “Black Forest Labs ISO 27001:2022 Certificate” source
          • GDPR — “Black Forest Labs GDPR Compliance Audit Report.pdf” source

          Latest updates

          About Flux

          Stable Diffusion

          Open text-to-image models from Stability AI for generating and editing images from prompts.

          Plans

          Community

          Free

          • Stable Diffusion 3.5 Suite
          • Stable Audio 3.0
          • SDXL Turbo
          • Stable Fast 3D
          • Research, non-commercial, and commercial use (under $1M annual revenue)

          Enterprise

          Price on request

          • Commercial Use
          • Implementation Support
          • Custom Model Training (upgrade)
          • Consulting Services (upgrade)
          • Custom Pricing

          Prices checked 2026-09-25 by web search.

          Capabilities

          • Text to image — “Stable Diffusion 3.5 Large Turbo : A distilled version of Stable Diffusion 3.5 Large generates high-quality images with exceptional prompt adherence in just 4 steps, making it considerably faster than Stable Diffusion 3.5 Large.” source
          • Commercial use — “Free for commercial use (up to $1M in annual revenue)” source
          • API — “Stability AI API” source

          Security

          • SOC 2 Type II — “Stability AI Inc. SOC 2 Type 2 Report” source
          • SOC 2 — “Stability AI Inc. SOC 2 Type 2 Report” source

          Latest updates

          • Stable Audio 3.0

            Releasing an API for Stable Audio 3.0; users can upload and transform audio samples using natural language prompts.

          • API Pricing Notice

            Increasing the pricing for select API services.

          • API Deprecation and Pricing Notice

            We will no longer support Stable Video Diffusion API and Stable Diffusion 1.6 API; pricing for select API services increased.

          About Stable Diffusion