Bottom line: Leonardo AI is a complete creative studio; FLUX is a family of image models. Leonardo ($12/month to start, with a free tier of 150 tokens a day) gives you an editor, a canvas, custom model training and a token allowance in one subscription. FLUX, from Black Forest Labs, gives you stronger raw prompt fidelity and photorealism, priced per image through an API (from about $0.01–$0.04 an image depending on model) or free locally with its open-weights versions. Creators who want a workflow should pick Leonardo; builders and tinkerers who want the model itself should pick FLUX.
Research-based comparison only — no hands-on testing claims. Prices checked October 2026.
Leonardo AI vs FLUX at a glance
| Feature | Leonardo AI | FLUX (Black Forest Labs) | Edge |
|---|---|---|---|
| What you buy | Hosted studio app with editor and canvas | Image models via API, partners or local install | Leonardo for ease |
| Free tier | Yes — 150 fast tokens/day, generations are public | Open-weights versions free to run locally; hosted trials via partners | FLUX locally; Leonardo in browser |
| Paid pricing | Essential $12/month (8,500 tokens), Premium $30 (25,000), Ultimate $60 (60,000) | No BFL subscription — pay per image, e.g. FLUX.2 [pro] from $0.03, FLUX 1.1 Pro $0.04, Ultra $0.06 | Depends on volume |
| Custom models | Train your own models/styles in the app | Fine-tuning and LoRA via API and local tools | Tie, different audiences |
| Best strength | Character consistency, game assets, guided workflow | Prompt fidelity, photorealism, editing models | — |
| Private generations | Yes on paid plans | Yes via API/local — nothing is posted publicly by default | — |
| Video | Motion image-to-video inside the studio | Image-focused model family | Leonardo |
What is the real difference in how they work?
Leonardo is a destination: you sign in, pick a model, generate, then refine with its AI Canvas, upscaling and background tools without leaving the page. It also hosts other leading models alongside its own, so one subscription can cover several looks. FLUX is an ingredient. Most people meet it inside another tool, through the Black Forest Labs API, or running locally in something like ComfyUI — the open-weights releases (such as the FLUX.2 Klein and FLUX.1 Schnell/Dev lines) are free to download, with the newest hosted API models priced per image by resolution and tier, down to $0.009 for a 1K Klein image.
Which makes better images?
On raw prompt fidelity and photorealistic detail, FLUX models sit at or near the top of most independent comparisons, and that is the honest reason developers build on them. Leonardo’s own Phoenix-family output is strong, and for illustrated styles, game assets and consistent characters its guided tools often get a usable result faster than a bare model does — because the workflow around the image (variations, canvas edits, trained styles) is half the job. If a single hero image has to be perfect, FLUX has the edge. If a project needs fifty on-style assets, Leonardo’s studio usually wins the afternoon.
Which is cheaper?
It depends entirely on volume. A light user pays nothing either way: Leonardo’s 150 free tokens a day refresh indefinitely, and FLUX’s open weights cost only your own hardware and electricity. At steady production volume, Leonardo Essential at $12 a month for 8,500 fast tokens is predictable and simple. FLUX through the API can undercut any subscription at a few cents an image — a thousand 1K images on the Klein API line would cost about $9 in model fees — but you are paying for integration, storage and your own time on top. There is no FLUX subscription to compare directly; anyone selling you one is a reseller or a host.
Which should you pick?
- Pick Leonardo AI if you want one login, a visual workflow, trained house styles and consistent characters — game art, marketing sets, product concepts.
- Pick FLUX if you want maximum image quality per prompt, an API for your own product, or free local generation with full control.
- Use both if Leonardo’s studio is your desk but a project needs FLUX output — Leonardo and most major hosts offer FLUX models inside their apps.
Frequently asked questions
Is FLUX free?
The open-weights FLUX versions are free to run locally, and some carry free commercial use under the FLUX Kommunity License for businesses under $5 million in revenue. Hosted API use is pay-per-image. Check the licence for the specific model before commercial work.
How much does Leonardo AI cost?
Free with 150 tokens a day. Paid plans are Essential $12 a month, Premium $30 and Ultimate $60, with 8,500, 25,000 and 60,000 fast tokens a month. Prices checked October 2026.
Which is better for consistent characters?
Leonardo, out of the box — character consistency and custom model training are built into its studio workflow. FLUX can do it with LoRA fine-tuning, but you assemble that pipeline yourself.
Does Leonardo use FLUX?
Leonardo hosts multiple third-party models alongside its own, and FLUX models are available through many hosted platforms. Check the model picker in your plan for current availability.