What is Nano Banana 2.1?
It is Google’s high-efficiency image generation and image editing model, updated for stronger visual quality, prompt adherence, consistency and text rendering.
What resolutions are supported?
Nano Banana 2.1 supports 1K, 2K and 4K output. The generator shows the selected resolution and quote before launch.
How many reference images can I add?
The model supports up to 14 reference images. Google documents up to four character references and up to ten high-fidelity object references in one workflow.
Can I make follow-up edits?
Yes. Download or reuse the previous output as an image reference, then guide the next version with a new prompt.
Does it support text in images?
Yes. The model is designed for clearer text rendering and infographic layouts; review important copy before publishing.
Which aspect ratios are available?
Common portrait, landscape and panoramic ratios are supported, including 1:4, 4:1, 1:8, 8:1, 16:9 and 9:16 where the provider allows them.
How does the price compare?
Google’s Standard image-equivalent reference is about $0.0336 at 1K, $0.0504 at 2K and $0.113 at 4K. Callirra shows its current quote before each run.
Can I compare it with GPT Image 2.5?
Yes. Use the same prompt and references in the generator, then compare Nano Banana 2.1 with GPT Image 2.5 Flare or Sunburst from one credit balance.
Which image models are available?
Callirra brings GPT Image 2.5, Nano Banana, Seedream and other image cards into one prompt-first generator with one shared credit balance.
Do Seedream 5 Lite and Pro support NSFW options?
Yes. The generator shows the NSFW option when the selected Seedream 5 model supports it, so the control is visible before you generate.
Why are Nano Banana and GPT Image 2.5 attractive here?
They have especially low entry prices in Callirra, while GPT Image 2.5 also offers Flare and Sunburst styles, 1K–4K output and large reference sets.
How many reference images can I use?
GPT Image 2.5 supports up to 16 reference images per run. Prompt templates show the exact minimum needed, including templates that require two references.
Can I start at 1K and finish at 4K?
Yes. Choose the resolution and quality for each run, preview the exact credit quote, then move the winning concept to a higher tier.