Banana Models
Overview
Banana models focus on high‑quality image generation. In StoryFlow, Banana Pro is the main high‑fidelity image model, and Z‑Image is a lightweight alternative.
Variants
- Banana Pro
- High fidelity; stronger composition and lighting control.
- Up to 8 reference images; resolutions
1K/2K/4K.
- Z‑Image
- Fast, lightweight image generation.
- Simple aspect ratio control; best for quick iterations.
Capabilities
- Text‑to‑Image: Turn visual descriptions into images.
- Image‑to‑Image: Guide style/composition using references.
Inputs
- Text (Prompt): Describe the scene, style, lighting, lens, and details.
- Reference Images:
- Banana Pro: up to 8 (multi‑style fusion).
Parameters
Banana Pro
| Parameter | Type | Default | Allowed | What it does |
|---|---|---|---|---|
aspectRatio | string | 1:1 | 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9, auto | Sets the output image aspect ratio. |
resolution | string | 1K | 1K, 2K, 4K | Sets the output resolution tier. Higher values cost more. |
Z‑Image
| Parameter | Type | Default | Allowed | What it does |
|---|---|---|---|---|
aspect_ratio | string | 1:1 | 1:1, 4:3, 3:4, 16:9, 9:16 | Sets the output image aspect ratio. |
Usage Tips
- Use multiple references to anchor style and layout for Pro output.
- Keep prompts specific (subject, environment, mood, camera) to reduce ambiguity.
- For storyboard frames, pick
16:9to match most video pipelines.
Cost Notes
- Banana Pro: higher cost;
4Kresolution consumes more credits than1K/2K. - Z‑Image: lower cost per request.