FLUX 3 Image Klein vs Nano Banana 2.1
Newest: FLUX 3 Image Klein · Widest inputs: Nano Banana 2.1 · Self-hosting: No open weights. Not enough arena votes yet for a quality score, so this is a spec comparison.
Black Forest LabsFLUX 3 Image Klein
- Arena—
- From—
- Max size—
GoogleNano Banana 2.1
- Arena1,427
- From$0.034/image
- Max size4K
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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.
- NewestFLUX 3 Image KleinFLUX 3 Image Klein Oct 15, 2026 · Nano Banana 2.1 Oct 6, 2026
- Widest inputsNano Banana 2.1FLUX 3 Image Klein: Text prompts, Reference images · Nano Banana 2.1: Text prompts, Reference images, Video
- Image editingBoth edit imagesTakes a reference image as input: FLUX 3 Image Klein yes · Nano Banana 2.1 yes
- Self-hostingNo open weightsBoth are available only through APIs and apps
- Most API hostsNano Banana 2.1FLUX 3 Image Klein: 1 · Nano Banana 2.1: 5
Every spec in one table
Dashes mean the data is not published.
| Specification | FLUX 3 Image KleinBlack Forest Labs | Nano Banana 2.1Google |
|---|---|---|
| Quality (blind human votes) | ||
| Text to image arenaElo-style score · higher is better | — | 1,325 ±9#5 of 82 · 5,290 votes |
| Image editing arenaElo-style score · higher is better | — | 1,427 ±6#7 of 61 · 12,956 votes |
| Price | ||
| Starting price | — | $0.034/image 1K |
| Top price | — | $0.113/image 4K |
| How it is billed | — | Billed per token; Google’s listed cost per image. |
| Output | ||
| Produces | Images | Images |
| Resolutions | — | 1K · 2K · 4K |
| Highest resolution | — | 4K |
| Largest image | — | 4K (about 16 MP) |
| Images per request | — | Up to 1 |
| Text in the reply | — | Yes |
| Inputs | ||
| Text prompts | Yes | Yes |
| Reference images (editing) | Yes | Yes |
| Max reference images | — | 14 |
| Access | ||
| Weights | Proprietary | Proprietary |
| API hosts | 1 | 5 (best) |
| Released | Oct 15, 2026 | Oct 6, 2026 |
Which should you choose?
Which is better, FLUX 3 Image Klein or Nano Banana 2.1?
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?
Nano Banana 2.1 costs from $0.034/image (1K), up to $0.113/image (4K). FLUX 3 Image Klein has no published per-image price. Prices are list rates and change often; check the lab before budgeting.
What is the difference between FLUX 3 Image Klein and Nano Banana 2.1?
FLUX 3 Image Klein is an image model from Black Forest Labs (Oct 15, 2026), taking text prompts and reference images and producing images. Nano Banana 2.1 is an image model from Google (Oct 6, 2026), taking text prompts, reference images and video and producing images.
Which is newer?
FLUX 3 Image Klein Oct 15, 2026; Nano Banana 2.1 Oct 6, 2026.
Which can edit an existing image?
Takes a reference image as input: FLUX 3 Image Klein yes; Nano Banana 2.1 yes.
Can I run any of these on my own hardware?
No open weights. Both are available only through APIs and apps.
Related comparisons
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- FLUX 3 Image Klein vs Qwen-Image 2.1Alibaba (Qwen) · Sep 14, 2026
- Nano Banana 2.1 vs FLUX 3 ImageBlack Forest Labs · Oct 5, 2026
- Nano Banana 2.1 vs MAI-Image-2.6Microsoft · Oct 13, 2026
- Nano Banana 2.1 vs Arrow 2QuiverAI · Sep 16, 2026
