FLUX1.1 [pro] Ultra vs Stable Diffusion 3.5 Large
Newest: FLUX1.1 [pro] Ultra · Image editing: Neither edits images · Self-hosting: Stable Diffusion 3.5 Large. Not enough arena votes yet for a quality score, so this is a spec comparison.
Black Forest LabsFLUX1.1 [pro] Ultra
- Arena—
- From—
- Max size—
Stability AIStable Diffusion 3.5 Large
- Arena938
- From—
- Max size—
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Make it a three-way comparison.
Where they differ
Quality is the arena score from blind, side-by-side human votes. Price, length and resolution come from each lab’s own listings.
- NewestFLUX1.1 [pro] UltraFLUX1.1 [pro] Ultra Nov 1, 2024 · Stable Diffusion 3.5 Large Oct 22, 2024
- Widest inputsSame inputsFLUX1.1 [pro] Ultra: Text prompts · Stable Diffusion 3.5 Large: Text prompts
- Image editingNeither edits imagesTakes a reference image as input: FLUX1.1 [pro] Ultra no · Stable Diffusion 3.5 Large no
- Self-hostingStable Diffusion 3.5 LargeDownloadable weights
- Most API hostsSame reachFLUX1.1 [pro] Ultra: 1 · Stable Diffusion 3.5 Large: 1
Every spec in one table
Dashes mean the data is not published.
| Specification | FLUX1.1 [pro] UltraBlack Forest Labs | Stable Diffusion 3.5 LargeStability AI |
|---|---|---|
| Quality (blind human votes) | ||
| Text to image arenaElo-style score · higher is better | — | 938 ±4#81 of 82 · 23,396 votes |
| Output | ||
| Produces | Images | Images |
| Inputs | ||
| Text prompts | Yes | Yes |
| Reference images (editing) | No | No |
| Access | ||
| Weights | Proprietary | Open |
| API hosts | 1 | 1 |
| Released | Nov 1, 2024 | Oct 22, 2024 |
Which should you choose?
Which is better, FLUX1.1 [pro] Ultra or Stable Diffusion 3.5 Large?
Neither model has enough arena votes for a reliable quality score yet, so this page compares specs only. Run the same three or four prompts through each and judge the results.
What is the difference between FLUX1.1 [pro] Ultra and Stable Diffusion 3.5 Large?
FLUX1.1 [pro] Ultra is an image model from Black Forest Labs (Nov 1, 2024), taking text prompts and producing images. Stable Diffusion 3.5 Large is an image model from Stability AI (Oct 22, 2024), taking text prompts and producing images.
Which is newer?
FLUX1.1 [pro] Ultra Nov 1, 2024; Stable Diffusion 3.5 Large Oct 22, 2024.
Which can edit an existing image?
Takes a reference image as input: FLUX1.1 [pro] Ultra no; Stable Diffusion 3.5 Large no.
Can I run any of these on my own hardware?
Stable Diffusion 3.5 Large. Downloadable weights.
Related comparisons
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- Stable Diffusion 3.5 Large vs Imagen 3Google · Oct 15, 2024
- Stable Diffusion 3.5 Large vs Recraft V3Recraft · Oct 30, 2024
- Stable Diffusion 3.5 Large vs Ideogram v2Ideogram · Aug 21, 2024
