Imagen 4 Fast vs FLUX.1 Kontext Max
Newest: Imagen 4 Fast · Widest inputs: FLUX.1 Kontext Max · Image editing: FLUX.1 Kontext Max. Not enough arena votes yet for a quality score, so this is a spec comparison.
GoogleImagen 4 Fast
- Arena—
- From$0.02/image
- Max size—
Black Forest LabsFLUX.1 Kontext Max
- Arena1,182
- From—
- Max size—
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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.
- NewestImagen 4 FastImagen 4 Fast Jun 25, 2025 · FLUX.1 Kontext Max May 29, 2025
- Widest inputsFLUX.1 Kontext MaxImagen 4 Fast: Text prompts · FLUX.1 Kontext Max: Text prompts, Reference images
- Image editingFLUX.1 Kontext MaxTakes a reference image as input: Imagen 4 Fast no · FLUX.1 Kontext Max yes
- Self-hostingNo open weightsBoth are available only through APIs and apps
- Most API hostsSame reachImagen 4 Fast: 1 · FLUX.1 Kontext Max: 1
Every spec in one table
Dashes mean the data is not published.
| Specification | Imagen 4 FastGoogle | FLUX.1 Kontext MaxBlack Forest Labs |
|---|---|---|
| Quality (blind human votes) | ||
| Text to image arenaElo-style score · higher is better | — | 1,075 ±3#61 of 82 · 65,501 votes |
| Image editing arenaElo-style score · higher is better | — | 1,182 ±3#52 of 61 · 390,855 votes |
| Price | ||
| Starting price | $0.02/image standard | — |
| How it is billed | Per image | — |
| Output | ||
| Produces | Images | Images |
| Inputs | ||
| Text prompts | Yes | Yes |
| Reference images (editing) | No | Yes |
| Access | ||
| Weights | Proprietary | Proprietary |
| API hosts | 1 | 1 |
| Released | Jun 25, 2025 | May 29, 2025 |
Which should you choose?
Which is better, Imagen 4 Fast or FLUX.1 Kontext Max?
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.
Which is cheaper?
Imagen 4 Fast costs from $0.02/image (standard). FLUX.1 Kontext Max has no published per-image price. Prices are list rates and change often; check the lab before budgeting.
What is the difference between Imagen 4 Fast and FLUX.1 Kontext Max?
Imagen 4 Fast is an image model from Google (Jun 25, 2025), taking text prompts and producing images. FLUX.1 Kontext Max is an image model from Black Forest Labs (May 29, 2025), taking text prompts and reference images and producing images.
Which is newer?
Imagen 4 Fast Jun 25, 2025; FLUX.1 Kontext Max May 29, 2025.
Which can edit an existing image?
Takes a reference image as input: Imagen 4 Fast no; FLUX.1 Kontext Max yes.
Can I run any of these on my own hardware?
No open weights. Both are available only through APIs and apps.
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