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FLUX by Black Forest Labs vs ImgAuth

Features, pricing, ratings, and pros and cons, side by side.

FLUX by Black Forest Labs logo

FLUX by Black Forest Labs

Image and video generation models with a pay-per-use API and open weights

Paid
Visit websiteView details
ImgAuth logo

ImgAuth

Check documents for tampering and images for AI-generation signals with heatmap evidence

Free trial
Visit websiteView details

Verdict

FLUX by Black Forest Labs and ImgAuth are both Image & Visual AI tools. FLUX by Black Forest Labs scores higher in FinderAtlas's editorial review (8.3 vs 7.3 out of 10), led by value for money. Only ImgAuth has a free plan or trial.

Best overall

FLUX by Black Forest Labs

  • Developers
  • Designers
  • Creators
  • Researchers

Choose FLUX by Black Forest Labs if

  • You want a tool built for adding image generation or editing to an application through an API.
  • Pay-per-use pricing with no subscription or seat fees.
  • Klein models start at $0.008 per image.

Choose ImgAuth if

  • You want a tool built for triage of invoices, receipts, certificates and claim documents, and quick whole-image AI-generation checks as one input to a human review.
  • Focused on two clear tasks, document tampering and AI-generated image detection.
  • Heatmaps and suspicious-region outputs give reviewers something to check, instead of a bare score.
Best value
ImgAuth
Best for beginners
ImgAuth
Best for business
FLUX by Black Forest Labs

Features

17 features compared.

  • FLUX 3 Image
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX 3 Video
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX 3 Image Klein
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX.2 family
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX.1 Kontext
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX Tools
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • FLUX 3 Action
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • Playground
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • Open weights
    FLUX by Black Forest Labs
    Available
    ImgAuth
    Not available
  • Document fraud detection
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • Heatmap evidence
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • AI Image Detector
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • Real or AI Face
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • REST API
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • Referral credits
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • Privacy handling
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available
  • Multilingual site
    FLUX by Black Forest Labs
    Not available
    ImgAuth
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    FLUX by Black Forest Labs
    Paid
    ImgAuth
    Free trial
  • Free plan
    FLUX by Black Forest Labs
    No
    ImgAuth
    Yes
  • Starting price
    FLUX by Black Forest Labs
    $0.008
    ImgAuth
    $0
  • Plans
    FLUX by Black Forest Labs
    3 plans
    ImgAuth
    3 plans

FLUX by Black Forest Labs plans

  • Pay-as-you-go API

    Most popular

    $0.008/image

    No subscription or seat fees; prepaid credits at $0.01 each. $0.008 is the FLUX 3 Klein price at 768x768

    • Per-image pricing
    • Per-second video pricing
    • Megapixel-based pricing for FLUX.2 models
    • Batch requests

  • Commercial weights licences

    Custom/year

    Builder, Platform and Professional tiers for self-hosting open weights; no prices are listed and each offers Contact Sales

    • Fine-tuning and LoRA rights
    • 10K to 100K images per month
    • Licensed users per tier
    • Self-hosting on your own infrastructure

  • Enterprise

    Custom/year

    Combined API and weights pricing with volume discounts, SLA and dedicated support through Contact Sales

    • All models and new releases
    • Volume discounts
    • SLA guarantees
    • Dedicated support

ImgAuth plans

  • Free trial

    $0/one-time

    3 free credits, no credit card required

    • 3 credits
    • Document tampering detection
    • AI Image Detector

  • Basic

    $9.90/month

    50 credits per month, standard processing

    • 50 credits per month
    • Unused credits roll over
    • ID and card
    • certificate and invoice tampering detection
    • AI Image Detector

  • Pro

    $24.90/month

    125 credits per month with priority processing

    • 125 credits per month
    • Priority processing
    • Unused credits roll over
    • All detection types

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

FLUX by Black Forest Labs
8.3overall
ImgAuth
7.3overall

FLUX by Black Forest Labs leads in 1 category and ImgAuth in 1.

  • Image Quality

    FLUX by Black Forest Labs
    9.0
    ImgAuth
    Not rated

  • Prompt Adherence

    FLUX by Black Forest Labs
    8.8
    ImgAuth
    Not rated

  • Text Rendering

    FLUX by Black Forest Labs
    8.5
    ImgAuth
    Not rated

  • Ease of Use

    ImgAuth leads by 1.0
    FLUX by Black Forest Labs
    7.0
    ImgAuth
    8.0

  • Value for Money

    FLUX by Black Forest Labs leads by 1.0
    FLUX by Black Forest Labs
    8.0
    ImgAuth
    7.0

  • Feature Depth

    FLUX by Black Forest Labs
    Not rated
    ImgAuth
    7.0

  • Performance & Speed

    FLUX by Black Forest Labs
    Not rated
    ImgAuth
    7.5

  • Documentation & Support

    FLUX by Black Forest Labs
    Not rated
    ImgAuth
    7.0

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

FLUX by Black Forest Labs

Pros

  • Pay-per-use pricing with no subscription or seat fees
  • Klein models start at $0.008 per image
  • One API covers image, video, audio and action models
  • Open weights available for selected models, with commercial licence tiers for self-hosting
  • Company holds SOC 2 Type II and ISO 27001:2022 certifications, according to its site

Cons

  • The pricing page mentions no free tier or free credits
  • Commercial licence prices are not published and require Contact Sales
  • Open weights come under several licences, and some are non-commercial
  • No mobile app

ImgAuth

Pros

  • Focused on two clear tasks, document tampering and AI-generated image detection
  • Heatmaps and suspicious-region outputs give reviewers something to check, instead of a bare score
  • Free 3-credit trial with no card, and cancellation at any time with access until period end
  • REST API for higher-volume and team workflows
  • Candid limitations: outputs are described as review signals, with explicit scope boundaries

Cons

  • No published accuracy figures or independent benchmarks
  • Not a deepfake, face-swap, liveness or identity tool, and the site's wording on face-swap detection is inconsistent
  • 10 MB file limit and no free ongoing tier after the 3 trial credits
  • Mobile app is only announced, with an outdated launch estimate (Q2 2025) on the site
  • Operating company is named only as ImgAuth Ltd, with no team or founding details published

Platforms

  • Web
    FLUX by Black Forest Labs
    Supported
    ImgAuth
    Supported
  • Windows
    FLUX by Black Forest Labs
    Not supported
    ImgAuth
    Not supported
  • macOS
    FLUX by Black Forest Labs
    Not supported
    ImgAuth
    Not supported
  • iOS
    FLUX by Black Forest Labs
    Not supported
    ImgAuth
    Not supported
  • Android
    FLUX by Black Forest Labs
    Not supported
    ImgAuth
    Not supported
  • API
    FLUX by Black Forest Labs
    Supported
    ImgAuth
    Supported
  • Browser Extension
    FLUX by Black Forest Labs
    Not supported
    ImgAuth
    Not supported

Integrations

FLUX by Black Forest Labs

3 integrations
  • Hugging Face
  • GitHub
  • MCP

ImgAuth

No integrations listed.

Company

  • Company
    FLUX by Black Forest Labs
    Not listed
    ImgAuth
    ImgAuth Ltd
  • Headquarters
    FLUX by Black Forest Labs
    Not listed
    ImgAuth
    Singapore
  • Listing
    FLUX by Black Forest Labs
    Not claimed
    ImgAuth
    Claimed

Frequently asked questions

Is FLUX by Black Forest Labs better than ImgAuth?

It depends on your workflow. FLUX by Black Forest Labs is built for adding image generation or editing to an application through an API. ImgAuth is built for triage of invoices, receipts, certificates and claim documents, and quick whole-image AI-generation checks as one input to a human review.

What are the key feature differences between FLUX by Black Forest Labs and ImgAuth?

FLUX by Black Forest Labs: Image and video generation models with a pay-per-use API and open weights. ImgAuth: Check documents for tampering and images for AI-generation signals with heatmap evidence.

Does FLUX by Black Forest Labs or ImgAuth have a free plan?

ImgAuth has a free plan or trial; FLUX by Black Forest Labs is paid only.

Which is cheaper, FLUX by Black Forest Labs or ImgAuth?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.