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Google Gemini 3.1 Flash Image · free trial with signup credits

Nano Banana 2 Fast multi-subject AI images — try free

Name a cast, a product family, or a busy scene. Generate at Flash speed. Start free with signup credits, then push winners to 2K or 4K.

Nano Banana 2 is Google’s Gemini 3.1 Flash Image on SupaImagine — built for quick rounds when several people or products must still look like themselves in one image. Write a full brief or upload a photo and say what to change. This is the speed lane, not the Pro print-polish lane and not the poster-text specialist.

  • Flash-tier speed for many ideas in one sitting
  • Several characters or products kept clear in one scene
  • Text to image and image to image in the same generator
  • 1K for drafts; 2K or 4K when an image is worth finishing
  • Free trial with signup credits — no card required to start
  • Keep every version in your library for the next pass
Nano Banana 2 product hero — porcelain and gold banana sculpture with soft cream type
HUMAN FRAGMENTS editorial poster sample

Create a 9:16 editorial poster in the HUMAN FRAGMENTS visual system. Theme: [surfing / basketball / boxing / cake decorating] Subject: [gender, age, appearance, outfit] Action: [specific movement or handcraft] Scene: [location and environment] Title: [custom two-word title] Supporting line: [one short phrase] Year: 2026 Use oversized cropped typography as the main structural framework. The letters should act as windows that reveal the surrounding environment, while the main person remains visually complete in front of the type. Do not let the letters cut through the face, torso, arms, thighs, or other important parts of the body. Let one key action element break beyond the typography to create strong depth: 1. WAVE CUT — a surfer carving across a rising wave, with the board nose, hand, water spray, and curled wave breaking outside the letters. 2. RIM RISE — a basketball player reaching toward the hoop from a camera placed above the rim, with the basketball, hand, and hoop fully outside the letter masks and aligned naturally. 3. IMPACT FRAME — a boxer throwing a straight punch toward the camera, with the foreground glove enlarged and breaking beyond the typography while the gym remains inside the letters. 4. SOFT SWIRL — a graceful young woman decorating a cake, with the piping bag, hands, cake, and cream details extending beyond the letters while the bakery interior appears inside the type. Use realistic photography, believable anatomy, natural skin texture, strong foreground perspective, subtle paper grain, a warm off-white background, restrained colors, and clean editorial spacing. Keep the text minimal and freely placed: [Title] HUMAN FRAGMENTS [Short supporting line] 2026

What Nano Banana 2 is for (and what it is not)

Gemini 3.1 Flash Image on SupaImagine — cast-aware scenes, product lineups, and rapid campaign rounds.

Open the Nano Banana 2 generator when the brief is busy: three friends in one photo, a SKU family on one shelf, a storyboard panel with named props. Google Nano Banana 2 follows multi-part instructions at Flash speed so you can throw away weak drafts without a long wait. Try Nano Banana 2 free after you create an account — signup credits spend here.

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Multi-subject edits

Nano Banana 2 keeps the cast while you change one thing

Group stills and product families — edit one variable without losing the set. Try this edit prefills image and prompt.

Red jacket → black

Same pair with left jacket black

Original

Two friends at a café, left in red jacket

Edit prompt

Keep both people, faces, poses, table, and lighting. Change only the left person's jacket to black. Right outfit unchanged. Photoreal group still.

See multi-subject stills

Three Nano Banana 2 prompts you can run next

Copy a cast-aware or lineup brief into the generator — busy scenes at Flash speed.

Three friends walking together in a park at golden hour
Sample still

Example prompt

Three friends, one park path

Three adult friends walking together on a park path at golden hour: left woman yellow sweater, middle man denim jacket holding coffee, right woman rust jacket. Same path light, all faces clear, coherent single shot not collage, photoreal, medium wide.

Job Multi-subject cast Mode Text to image
Use this prompt
Row of colorful sneakers on a wood shelf
Sample still

Example prompt

Sneaker lineup shelf

Retail shelf lineup of related sneakers in one family: same silhouette language, different colorways, front-facing, soft store lighting, clean background, product photography as one set.

Job Product family Mode Text to image
Use this prompt
Colorful layered smoothie bottle on a kitchen counter
Sample still

Example prompt

Layered smoothie bottle

Photoreal colorful layered smoothie bottle on a clean kitchen counter, soft window light, bright product snapshot, no brand text, no watermark.

Job Product still Mode Text to image
Use this prompt

Flash lane strengths

Nano Banana 2 strengths: speed, cast, modes, finish size

Four practical reasons teams open this model instead of waiting on a slower print-first path.

Generate many options while the idea is still hot

Nano Banana 2 is the Flash tier: list who is in the shot, where they stand, and which props matter, then run again if the first image is close. Fast loops beat one perfect wait when you are still choosing a direction.

Campaign board with multiple fast draft stills of the same cast

Keep a cast or product set readable in one image

Name each person or SKU and ask for one shared scene. Multi-subject coherence is why people pick Nano Banana 2 for group stills, comic panels, and lineup shots — not a collage of almost-right faces.

Group café scene with several characters kept consistent in one image

Text to image or image to image without hopping models

Create a new still from a Nano Banana 2 text to image prompt, or switch to image to image, drop a photo, and describe the edit. Same model, same panel — useful when a campaign board needs both fresh stills and tweaks.

Before and after restyle of the same person via image to image

Finish winners at 2K or 4K without leaving Flash

Explore cheaply at 1K, then re-run the same Nano Banana 2 prompt at 2K or 4K when composition is locked. You choose size before generate — a new run at that tier, not a silent free upscale later.

Ultra-detailed product still suitable for large delivery
Quick start

Try Nano Banana 2 free in four clicks

From signup credits to a downloadable still — free trial, name the cast, generate, save.

1
Create an account and claim signup credits

Create an account and claim signup credits

New accounts get free credits you can spend on Nano Banana 2. That is the free trial — open the generator below and you are ready.

2
Name the cast, products, and layout

Name the cast, products, and layout

Write who must stay consistent, what sits where, and any props that matter. Or upload a source and describe only the change.

3
Pick size and generate

Pick size and generate

Use 1K while you explore. When an image works, re-run the same Nano Banana 2 brief at 2K or 4K.

4
Save and refine

Save and refine

Keep winners in your library. Run another prompt, tweak with image to image, or bump size when an image is worth finishing.

Who ships with Flash multi-subject

Jobs where Nano Banana 2 shines

Busy scenes and fast loops — different from poster-text pages and from Pro-only print work.

Storyboard and comic panels

Keep named characters readable in one panel while you iterate beats at Flash speed.

Group lifestyle and UGC-style stills

Friends, teams, or creators in one scene that still looks like the same people.

Product family and SKU lineups

Related items on one shelf or grid for lookbooks, PDP tests, and retail mock reviews.

Campaign direction boards

Turn a long creative note into hero options the same afternoon, then finish only the winners larger.

Concept art and world props

Environments, props, and cast sheets when speed and instruction-following matter more than final print.

Photo restyles and board tweaks

Image to image: keep the subject, change wardrobe, background, or lighting without starting from zero.

Nano Banana 2 — practical answers

Why pick Nano Banana 2 when the brief names several people?

You can list each person and still ask for one shared image. Multi-subject coherence is why this model fits group stills and comic panels — identities should hold together, not look pasted from different runs.

Do my new-account credits work on Nano Banana 2?

Yes. Signup credits are spendable here, so you get a real free trial on Nano Banana 2. After that, runs use the credit packs shown before you generate.

Is Google Nano Banana 2 another name for Gemini 3.1 Flash Image?

Yes. Platforms often label Gemini 3.1 Flash Image as Google Nano Banana 2. On SupaImagine you get that Flash tier: fast loops, multi-part briefs, finishes up to 4K.

How do I keep a cast from drifting between regenerations?

Lock hair, clothes, and positions in the prompt every time. Change only one variable per Nano Banana 2 run. If one face softens, rewrite that person only — do not wipe the whole brief.

Can I restyle a real photo without starting from zero?

Yes. Nano Banana 2 image to image: upload the still, keep the subjects you name, and describe the wardrobe, background, or lighting change. Same generator as text to image.

When is Flash speed more useful than a slower “print first” wait?

When you need many options the same afternoon — direction boards, lineup tests, storyboard beats. Iterate at 1K, then push only winners toward Nano Banana 2 4K.

How do I brief a product family so SKUs still look related?

Describe the shared bottle language and the differences (color, scent line) in one prompt. Ask for one shelf or grid so the set reads as a family, not four random bottles.

What should I put in a Nano Banana 2 storyboard panel prompt?

Name each character, their place in the image, key props, and the shared light. One coherent panel beats a collage of almost-right people — that is the multi-subject job.

Try Nano Banana 2 free — generate as fast as you can describe

Sign up, spend free credits on multi-subject Flash stills, and only upgrade the images you like to 2K or 4K.