# FLUX review

Black Forest Labs' FLUX image and video generation models, from a free Apache-2.0 open-weight model to pay-as-you-go API access.

By Noah — last updated & pricing verified September 15, 2026.

> **FLUX** is Black Forest Labs' family of generative AI models, spanning text-to-image generation, image editing, and, with FLUX 3, native video, audio, and robotics action-prediction from a single multimodal model. Models are distributed three ways: as downloadable open weights for self-hosting, through a browser-based cloud playground for experimentation, and via a production API for integrating generation into other products.

Licensing varies by model: FLUX.1 [schnell] is released under Apache-2.0, making it free to self-host and use commercially with no royalty; FLUX.1 [dev] and its editing variants (Fill, Canny, Depth, Redux, Kontext, Krea) and associated LoRAs are free to download but licensed for non-commercial use only unless a paid commercial license is purchased. API usage is billed pay-as-you-go with published per-second rates for video generation ($0.17/second, no subscription or seat fees), while commercial open-weights licensing for the newer FLUX.2 [klein] and [dev] models is sold in named tiers (Builder, Platform, Professional, Enterprise, and a Synthetic Data tier for training-data rights) differentiated by monthly image quotas and number of allowed domains, with exact pricing available only by contacting sales.

## Facts

- Website: https://bfl.ai
- Pricing: Free (verified undefined NaN, NaN)
- License: Open core
- Platforms: web
- Best for: developers and teams who want to self-host a commercially-licensed open-weight image model (FLUX.1 [schnell]) or pay per API call for image and video generation without a subscription
- Standout feature: FLUX.1 [schnell] is a genuinely free, Apache-2.0-licensed model that can be self-hosted and used commercially with no royalty, unlike most competing frontier image models that are API-only or non-commercial by default.
- Biggest weakness: Most of the commercial licensing tiers (Builder, Platform, Professional, Enterprise) don't list actual USD prices on the pricing page, requiring a purchase flow or sales contact to learn the real cost, and the higher-quality [dev] models are non-commercial unless that separate paid license is bought.
- Categories: [AI image generation](https://findalternative.to/categories/ai-image-generation)

## Pricing snapshot

| Plan | Price | Notes |
| --- | --- | --- |
| FLUX.1 [schnell] (open weights) | $0/mo | Apache-2.0 licensed; free to download, self-host, and use commercially with no royalty. |
| FLUX.1 [dev] and editing models (open weights) | $0/mo | Free to download for non-commercial use; a separate paid commercial license is required for commercial use. |
| API (pay-as-you-go) | Custom | No subscription or seat fees; video generation billed at $0.17/second (a 5-second clip costs $0.85). Image generation is billed per-call at rates not disclosed on the pricing page. |
| Builder (commercial open-weights license) | Custom | FLUX.2 [klein] models, 10,000 images/month, 1 domain, fine-tuning rights included. Exact price requires purchase or contacting sales. |
| Enterprise (commercial open-weights license) | Custom | All models plus new releases, custom volume, permissive commercial use. Custom pricing via sales. |

## Pros and cons

- Pro: FLUX.1 [schnell] is Apache-2.0 licensed: free to self-host and use commercially with no royalty.
- Pro: Pay-as-you-go API pricing has no subscription or seat fees.
- Pro: Model lineup spans image, video, audio, and (FLUX 3) action-prediction from one architecture family.
- Pro: Open weights let teams fine-tune and run models on their own infrastructure instead of depending on an API.
- Con: Commercial licensing tiers (Builder, Platform, Professional, Enterprise) don't list USD prices; most require a purchase flow or sales contact.
- Con: The higher-quality FLUX.1 [dev] and editing models are non-commercial by default unless a separate paid license is purchased.
- Con: Self-hosting open-weight models requires GPU infrastructure and ML tooling most non-technical users don't have.
- Con: API image-generation pricing isn't published alongside the video per-second rate, making cost estimation harder for image-heavy workloads.

## AI summary

- FLUX.1 [schnell] is free and Apache-2.0 licensed for commercial self-hosting.
- FLUX.1 [dev] and editing models are free for non-commercial use only.
- API video generation costs $0.17/second, pay-as-you-go with no subscription.
- Commercial open-weights licensing tiers (Builder, Platform, Professional, Enterprise) require contacting sales for pricing.
- Best for: developers wanting a free, commercially-licensed open-weight image model or pay-as-you-go API access
- Pricing: FLUX.1 [schnell] is free (Apache-2.0); API billed pay-as-you-go, video at $0.17/second.
- Top alternatives: Midjourney, Stability AI, OpenAI, Adobe Firefly
- Limitation: Most commercial licensing tiers don't list public USD prices.
- Limitation: Higher-quality [dev] models are non-commercial without a paid license.
- Limitation: Self-hosting requires GPU infrastructure most users don't have.

## Alternatives

4 vetted alternatives to FLUX: https://findalternative.to/flux — top picks: Midjourney, Adobe Firefly, Ideogram

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