PROMPT LIBRARY
Nano Banana 2.1 prompts, each with the image it made.
Each prompt is quoted word for word from the model maker's guide or a creator's post, next to the output it produced. Open a card for the full prompt.
Google released Nano Banana 2.1 on October 6, 2026, as its image generation and editing model, called gemini-nano-banana-2.1 in the API and positioned as the efficient counterpart to Nano Banana Pro. It takes text, image, video and PDF input, returns images at 1K, 2K or 4K, adds the 1:4, 4:1, 1:8 and 8:1 aspect ratios, and accepts up to 14 reference images: up to 10 objects and up to 4 characters. In the API a 1K image costs $0.0336, 2K $0.0504 and 4K $0.113, half that through the Batch API. The prompts below are ones creators shared on X, each shown with its output and linked to its post.
Sources: Google on X · Gemini API: Nano Banana 2.1 · Image generation guide · Pricing
Nano Banana 2.1 prompts that get liked: what 81 posts have in common →
Nano Banana Pro vs 2.1 prompts: keep your Pro prompts, add a ratio and an identity line →
GPT Image 2.6 vs Nano Banana 2.1 prompts, measured →
Updated 2026-11-03 · 90 prompts, newest first
Other model pages: GPT Image 2.6 · Seedance 2.5 · Kling 4.0 · MiniMax H3 · Wan 3.0
Olive-suited man with natural skin texture
Candy monster on doorstep, doorbell camera view
Ten identical twins in raincoats counting fingers
Reverse angle of woman on ruined temple steps
Raccoon elf caught stealing a cookie
Woman in pink bedroom mirror selfie with tattoos
Woman in yellow beaded halter with damp hair
Spider-Man drawn in ten labelled art styles
Neon yellow satin mini dress in velvet armchair
Blonde model in retro kitchen holding tiramisu
Cinematic blue haze studio portrait in dark hoodie
Woman in white satin slip dress in mirrored hallway
Base weekly recap as logo tiles by section
Maggi 2 Minute Magic noodle billboard at sunrise
Sundar Pichai life stage timeline, ages 5 to present
Four manga creators as toy figurines with escaping creations
Sunlit smartphone selfie of woman in white tee
JSON prompt that reconstructs a photo shot for shot
Couple's shirt threads unravel into a line sketch
Anime Japanese New Year dinner family confrontation
Anime streetwear couple in polos and retro sneakers
Vintage Concrete Passage Fashion Portrait in Burgundy
Black and white portrait in circular concrete stairwell
Golden Hour Rooftop Menswear Portrait
Man in black outfit takes elevator selfie
Man in black coat before the Eiffel Tower
Tuxedo Man Sipping Tea Beside Alpine Lake
Kawaii Three Panel Portrait Collage With Kitten
Half Face Photo Half Pop Art Portrait
Four smartphone beauty portraits in a 2x2 grid
Four scientist surnames as experimental typographic wordmarks
Four satirical pop up books with clay machines
Candid night flash photo tying hair on stone steps
Black and white editorial portrait with hard side light
Editorial portrait poster with blurred ghost figures
Cowboy on Horseback Before Golden Sunset Cloud
Golden hour coastal portrait of a man
Quiet luxury menswear portrait against sandstone wall
Minimalist luxury campaign portrait with windswept hair
Conservatory Portrait Behind Monstera Leaf Shadows
Barefoot woman in pink silk dress on dusk beach
Photo with only hair, bowl and chopsticks as anime
Blonde creator speaking to camera at bedroom vanity
Four concept words shaped into typographic symbols
Paint tubes squeezing 3D impasto landscapes in a 2x2 grid
Spinning night street portrait with long shutter motion blur
Fisheye vintage cafe mirror selfie in turquoise interior
Nothing matches. Try a shorter word.
Nano Banana 2.1 prompts worth starting from
The most liked prompt in each category on this page, in full, with what makes it work. Copy one, then change the subject.
Sunlit smartphone selfie of woman in white tee
A structured JSON spec splits face, hair, clothing, lighting and camera into separate fields, so each detail is controlled on its own. Naming a 24 to 28mm phone lens, clipped HDR highlights and a long avoid list keeps the result casual instead of studio polished.
{
"prompt_type": "detailed_image_reconstruction",
"aspect_ratio": "16:9 horizontal portrait",
"overall_goal": "Recreate the visual appearance, framing, lighting, styling, and casual smartphone-photo feel of the reference image as closely as possible while keeping the result photorealistic and natural.",
"subject": {
"type": "young adult woman",
"age_range": "early to mid 20s",
"pose": "standing indoors, upper body turned slightly away from the camera while her face turns toward the lens",
"body_position": "relaxed casual posture with shoulders slightly angled",
"expression": "soft neutral expression with a subtle pout, calm and confident",
"gaze": "looking directly toward the camera",
"styling": "minimal everyday styling, clean and natural"
},
"face": {
"shape": "soft oval face with a gently tapered jawline",
"forehead": "medium-height forehead partly framed by center-parted hair",
"eyebrows": "natural medium-thick dark brown eyebrows with a soft arch",
"eyes": {
"shape": "almond-shaped",
"color": "light brown to hazel",
"appearance": "bright eyes with visible catchlights",
"lashes": "long defined eyelashes with subtle mascara"
},
"nose": "small straight nose with a softly rounded tip",
"lips": {
"shape": "full lips with a defined cupid's bow",
"color": "natural rosy pink",
"finish": "soft satin finish, not glossy"
},
"skin": {
"tone": "light warm-neutral skin tone",
"texture": "smooth natural skin with subtle pores and realistic tonal variation",
"cheeks": "soft natural pink flush",
"finish": "fresh luminous skin without heavy retouching"
},
"makeup": "very light natural makeup, softly defined lashes, subtle blush, natural pink lips, no dramatic contour"
},
"hair": {
"color": "rich medium-to-dark chocolate brown",
"length": "very long, extending well below the chest",
"parting": "clean center part",
"texture": "mostly straight with very soft natural bends through the lower lengths",
"density": "thick and healthy-looking",
"finish": "smooth and glossy but still realistic",
"front_sections": "two thin face-framing strands falling naturally along both sides of the face",
"details": "visible individual strands, subtle flyaways near the crown, realistic highlights from sunlight, natural uneven strand separation",
"movement": "hair hanging naturally over both shoulders and down the front of the shirt"
},
"clothing": {
"top": "oversized plain white crew-neck T-shirt",
"fit": "loose casual fit",
"fabric": "soft slightly wrinkled cotton",
"logos": "none",
"accessories": "no visible jewelry or prominent accessories"
},
"composition": {
"shot_type": "close upper-body portrait",
"camera_angle": "slightly above chest level, close to eye level",
"camera_distance": "approximately arm's-length smartphone distance",
"subject_position": "face slightly right of center with long hair occupying much of the lower frame",
"crop": "top of head fully visible, image extending down to around lower torso",
"orientation": "vertical",
"perspective": "natural wide smartphone-camera perspective with mild close-range distortion"
},
"lighting": {
"primary_source": "strong warm natural sunlight entering from the side/front through a nearby window",
"direction": "sunlight striking the subject from camera-left/front",
"face_effect": "bright warm illumination across the forehead, cheeks, nose, and hair",
"hair_effect": "distinct brown highlights and soft reflective streaks along individual strands",
"shadow_quality": "strong but soft-edged natural indoor shadows",
"exposure": "face slightly brightly exposed while the room behind remains much darker",
"color_temperature": "warm daylight"
},
"environment": {
"location": "casual indoor residential room",
"background": "dark gray walls with a white ceiling cornice",
"left_background": "open doorway or darker hallway area",
"right_background": "dark wall and partially visible household objects",
"lower_right": "part of a black tripod or light stand visible",
"overall_feel": "ordinary lived-in room rather than a studio",
"depth": "background moderately out of focus but still recognizable"
},
"camera": {
"capture_device": "modern smartphone camera",
"lens_equivalent": "approximately 24-28mm full-frame equivalent",
"focus": "sharp focus on face and front hair",
"depth_of_field": "mostly natural smartphone depth of field with gentle background softness",
"dynamic_range": "realistic phone-camera HDR with slightly clipped highlights in direct sun",
"image_character": "casual social-media selfie/photo, not professionally staged"
},
"photorealism_details": [
"real individual hair strands",
"natural skin pores and micro-texture",
"subtle peach fuzz",
"realistic eyelash separation",
"tiny variations in lip texture",
"slight fabric creases in the T-shirt",
"small flyaway hairs around the crown",
"natural sunlight falloff across the face",
"slightly imperfect casual framing",
"realistic indoor shadow noise"
],
"style": {
"visual_style": "highly photorealistic casual smartphone portrait",
"mood": "soft, youthful, relaxed, sunlit",
"processing": "light social-media style processing with warm skin tones and slightly enhanced clarity",
"avoid": [
"cinematic movie lighting",
"studio portrait lighting",
"overly smooth plastic skin",
"CGI appearance",
"anime or illustration",
"heavy beauty filter",
"extreme facial symmetry",
"over-sharpened hair",
"artificial jet-black hair",
"dramatic makeup",
"excessive background blur",
"professional studio backdrop",
"text",
"watermarks",
"logos"
]
},
"negative_prompt": "cartoon, anime, illustration, CGI, plastic skin, waxy face, over-retouched skin, excessive beauty filter, unnatural facial symmetry, distorted eyes, crossed eyes, malformed lips, warped face, duplicate hair strands, fake wig appearance, overly black hair, metallic hair shine, stiff hair, messy anatomy, distorted shoulders, extra limbs, extra fingers, studio backdrop, cinematic lighting, dramatic color grading, excessive bokeh, oversaturated colors, text, logo, watermark"
} Full-body fashion illustration in textured geometric style
Outfit described item by item, then a short ban list that rules out photorealism and 3D.
Create a stylish, full-body editorial fashion illustration of a young woman in a modern casual outfit, using a minimalist, textured geometric art style. She wears an oversized forest-green hoodie, wide-leg blue denim jeans with folded cuffs, and chunky brown sneakers. Her dark hair is tied in a neat low bun. She carries a bouquet of vibrant pink roses wrapped in white paper, a takeaway coffee cup, and a black shoulder bag. Show her walking naturally in a relaxed pose, viewed from a three-quarter rear angle, with soft, elegant body proportions and simplified facial details.
Use a warm ivory background with plenty of negative space, soft ground shadows, subtle paper grain, visible brush textures, and angular polygonal shading across the clothing and shoes. The color palette features deep forest green, denim blue, warm brown, cream, and vivid pink. Soft diffused lighting, clean composition, contemporary lifestyle magazine aesthetic, hand-painted digital illustration, refined edges, artistic fabric textures, vertical 3:4 composition, high detail. No photorealism, no 3D rendering, no extra objects, no text or watermark. Half photo, half black-ink illustration poster
Asks for an exact 50/50 split, then specifies how each half treats the same subject.
Using the uploaded reference image, create a single high-resolution vertical 2:3 editorial art poster.
Divide the canvas into two perfectly equal horizontal sections, each occupying exactly 50% of the total height. Separate them with a clean, perfectly straight horizontal dividing line.
1. TOP HALF — ORIGINAL REFERENCE PHOTOGRAPH
Use the uploaded reference photograph directly in the upper 50% of the poster.
Preserve its original photographic quality, sharpness, natural lighting, and color relationships.
Allow only subtle, intelligent cropping around the outer edges when necessary, without compromising the main subject.
If required, naturally extend a small portion of the surrounding environment to fit the composition.
Do not redraw, illustrate, stretch, blur, or modify the subject's appearance, structure, or spatial relationships.
Do not introduce black borders, white margins, or empty edges.
2. BOTTOM HALF — MINIMALIST EDITORIAL ILLUSTRATION
Use a warm, near-white ivory paper background with an extremely subtle paper texture.
Analyze the main subject and visual story of the uploaded reference image.
Extract only the primary subject, preserving one or two essential identifying elements.
Remove or heavily simplify all secondary details, including background architecture, crowds, vehicles, fences, signs, trees, and other unnecessary elements.
Transform the primary subject into a sophisticated black-ink editorial illustration.
ILLUSTRATION STYLE:
Use natural, clean pen strokes with varied line weight.
Preserve an authentic hand-drawn appearance with expressive but controlled linework.
Avoid overly precise engraving aesthetics, excessive internal details, and dense cross-hatching.
Place a large, nearly pure-black rectangular ink block behind the illustrated subject.
The rectangular block should have subtly imperfect, handmade print-style edges.
Keep the black background clean, with only fine paper grain and minimal noise.
Avoid obvious hatching, scratches, architectural lines, or complex textures.
ILLUSTRATION SCALE AND COMPOSITION:
The illustrated subject must occupy approximately 72–77% of the canvas width and 58–64% of the bottom section's height.
Maintain a clear visual focal point with generous negative space surrounding the illustration.
3. COLOR RULES
The bottom illustration must follow a strictly black-and-white color palette by default.
Preserve only one localized accent color if the original reference image contains a clearly distinctive, concentrated color element with meaningful narrative importance.
Ordinary blue skies, green vegetation, stone surfaces, skin tones, and environmental colors must not be treated as accent colors.
Any preserved accent color must remain strictly localized to the relevant subject or area.
Never allow accent colors to spread across the entire illustration.
4. TYPOGRAPHY AND EDITORIAL LAYOUT
Automatically generate concise, meaningful English typography based on the content of the uploaded reference photograph.
The typography must resemble handwritten editorial annotations from an independent art publication.
TOP-LEFT CORNER:
Generate a short handwritten title consisting of 2–5 words, arranged across two lines.
Directly beneath the title, include three short English action verbs relevant to the photograph.
TOP-RIGHT CORNER:
Display only two lines of geographic coordinates:
Latitude
Longitude
Do not include any additional text in this area.
BOTTOM-LEFT CORNER:
Display the location name followed by the word "DIARY."
Directly beneath it, add one short descriptive English sentence inspired by the photograph.
TYPOGRAPHY STYLE:
Use a rough, upright, slightly irregular handwritten typeface.
Maintain subtle imperfections and a natural editorial annotation aesthetic.
Avoid elegant cursive, calligraphy, overly decorative lettering, and excessively polished typography.
5. FINAL ART DIRECTION
The finished poster must combine:
Authentic, high-quality photography.
Minimalist black-and-white editorial illustration.
Generous negative space.
Independent art publication aesthetics.
Quiet, restrained, sophisticated visual storytelling.
Natural handwritten typography.
A balanced relationship between documentary realism and expressive hand-drawn artwork.
The overall result should resemble a carefully designed, collectible editorial art print.
6. FINAL OUTPUT REQUIREMENTS
ASPECT RATIO:
2:3 vertical.
RESOLUTION:
High-resolution, sharp, print-quality output.
COMPOSITION:
Exactly 50% original reference photography on top.
Exactly 50% editorial illustration on the bottom.
One perfectly straight horizontal dividing line.
One complete, standalone poster.
RESTRICTIONS:
No collages.
No multi-poster layouts.
No combined images.
No unnecessary decorative elements.
No modifications to the original subject's identity or appearance.
No excessive illustration details.
No changes to the original photograph's natural color relationships.
FINAL GOAL:
Create a sophisticated, visually balanced editorial art poster that faithfully preserves the uploaded reference photograph while transforming its primary subject into an expressive, minimalist black-ink illustration. JSON prompt that reconstructs a photo shot for shot
Structured as JSON fields (framing, light, colour, negatives). The post compares the same JSON on Nano Banana 2.1 and GPT Image 2.5.
{
"prompt_type": "detailed_image_reconstruction",
"aspect_ratio": "4:5 vertical portrait",
"overall_goal": "Recreate the visual appearance, framing, lighting, styling, and casual smartphone-photo feel of the reference image as closely as possible while keeping the result photorealistic and natural.",
"subject": {
"type": "young adult woman",
"age_range": "early to mid 20s",
"pose": "standing indoors, upper body turned slightly away from the camera while her face turns toward the lens",
"body_position": "relaxed casual posture with shoulders slightly angled",
"expression": "soft neutral expression with a subtle pout, calm and confident",
"gaze": "looking directly toward the camera",
"styling": "minimal everyday styling, clean and natural"
},
"face": {
"shape": "soft oval face with a gently tapered jawline",
"forehead": "medium-height forehead partly framed by center-parted hair",
"eyebrows": "natural medium-thick dark brown eyebrows with a soft arch",
"eyes": {
"shape": "almond-shaped",
"color": "light brown to hazel",
"appearance": "bright eyes with visible catchlights",
"lashes": "long defined eyelashes with subtle mascara"
},
"nose": "small straight nose with a softly rounded tip",
"lips": {
"shape": "full lips with a defined cupid's bow",
"color": "natural rosy pink",
"finish": "soft satin finish, not glossy"
},
"skin": {
"tone": "light warm-neutral skin tone",
"texture": "smooth natural skin with subtle pores and realistic tonal variation",
"cheeks": "soft natural pink flush",
"finish": "fresh luminous skin without heavy retouching"
},
"makeup": "very light natural makeup, softly defined lashes, subtle blush, natural pink lips, no dramatic contour"
},
"hair": {
"color": "rich medium-to-dark chocolate brown",
"length": "very long, extending well below the chest",
"parting": "clean center part",
"texture": "mostly straight with very soft natural bends through the lower lengths",
"density": "thick and healthy-looking",
"finish": "smooth and glossy but still realistic",
"front_sections": "two thin face-framing strands falling naturally along both sides of the face",
"details": "visible individual strands, subtle flyaways near the crown, realistic highlights from sunlight, natural uneven strand separation",
"movement": "hair hanging naturally over both shoulders and down the front of the shirt"
},
"clothing": {
"top": "oversized plain white crew-neck T-shirt",
"fit": "loose casual fit",
"fabric": "soft slightly wrinkled cotton",
"logos": "none",
"accessories": "no visible jewelry or prominent accessories"
},
"composition": {
"shot_type": "close upper-body portrait",
"camera_angle": "slightly above chest level, close to eye level",
"camera_distance": "approximately arm's-length smartphone distance",
"subject_position": "face slightly right of center with long hair occupying much of the lower frame",
"crop": "top of head fully visible, image extending down to around lower torso",
"orientation": "vertical",
"perspective": "natural wide smartphone-camera perspective with mild close-range distortion"
},
"lighting": {
"primary_source": "strong warm natural sunlight entering from the side/front through a nearby window",
"direction": "sunlight striking the subject from camera-left/front",
"face_effect": "bright warm illumination across the forehead, cheeks, nose, and hair",
"hair_effect": "distinct brown highlights and soft reflective streaks along individual strands",
"shadow_quality": "strong but soft-edged natural indoor shadows",
"exposure": "face slightly brightly exposed while the room behind remains much darker",
"color_temperature": "warm daylight"
},
"environment": {
"location": "casual indoor residential room",
"background": "dark gray walls with a white ceiling cornice",
"left_background": "open doorway or darker hallway area",
"right_background": "dark wall and partially visible household objects",
"lower_right": "part of a black tripod or light stand visible",
"overall_feel": "ordinary lived-in room rather than a studio",
"depth": "background moderately out of focus but still recognizable"
},
"camera": {
"capture_device": "modern smartphone camera",
"lens_equivalent": "approximately 24-28mm full-frame equivalent",
"focus": "sharp focus on face and front hair",
"depth_of_field": "mostly natural smartphone depth of field with gentle background softness",
"dynamic_range": "realistic phone-camera HDR with slightly clipped highlights in direct sun",
"image_character": "casual social-media selfie/photo, not professionally staged"
},
"photorealism_details": [
"real individual hair strands",
"natural skin pores and micro-texture",
"subtle peach fuzz",
"realistic eyelash separation",
"tiny variations in lip texture",
"slight fabric creases in the T-shirt",
"small flyaway hairs around the crown",
"natural sunlight falloff across the face",
"slightly imperfect casual framing",
"realistic indoor shadow noise"
],
"style": {
"visual_style": "highly photorealistic casual smartphone portrait",
"mood": "soft, youthful, relaxed, sunlit",
"processing": "light social-media style processing with warm skin tones and slightly enhanced clarity",
"avoid": [
"cinematic movie lighting",
"studio portrait lighting",
"overly smooth plastic skin",
"CGI appearance",
"anime or illustration",
"heavy beauty filter",
"extreme facial symmetry",
"over-sharpened hair",
"artificial jet-black hair",
"dramatic makeup",
"excessive background blur",
"professional studio backdrop",
"text",
"watermarks",
"logos"
]
},
"negative_prompt": "cartoon, anime, illustration, CGI, plastic skin, waxy face, over-retouched skin, excessive beauty filter, unnatural facial symmetry, distorted eyes, crossed eyes, malformed lips, warped face, duplicate hair strands, fake wig appearance, overly black hair, metallic hair shine, stiff hair, messy anatomy, distorted shoulders, extra limbs, extra fingers, studio backdrop, cinematic lighting, dramatic color grading, excessive bokeh, oversaturated colors, text, logo, watermark"
} Spider-Man drawn in ten labelled art styles
One open subject with no named style list lets the model choose ten distinct looks and place them as labelled panels in one grid. Asking for a single image of one character in many styles keeps the identity consistent across panels, so the set reads as a direct style comparison.
🚨 New Nano Banana 2.1 just got new checkpoint on arena < high chance this is new pro version i will test and keep you guys updated> Photograph above, sketch below: an editorial template
Fill `[SUBJECT]` and `[SETTING]`. The ban list covers the usual split-poster failures: heavy borders, mismatched faces.
Create a premium editorial poster featuring a two-part visual composition. The upper half shows a photorealistic photograph of [SUBJECT] in [SETTING], captured in warm natural sunlight with realistic skin texture, authentic expressions, soft highlights, and cinematic depth of field. The lower half transforms the exact same scene into a beautiful hand-painted digital illustration, preserving the subject’s pose, hairstyle, clothing, colors, and key visual details.
Place the illustrated scene inside a clean rectangular frame on a warm ivory, subtly textured paper background. Use a charming contemporary illustration style with delicate brush textures, simplified organic shapes, pastel colors, soft outlines, and a nostalgic summer-magazine aesthetic. Add tasteful decorative elements that complement the scene.
Below the illustration, include a centered minimalist editorial title reading “[MAIN TITLE]” in thin, widely spaced uppercase typography, followed by a smaller subtitle reading “[TAGLINE]” in elegant letter-spaced text. Add a short, thin pastel-colored line underneath.
Maintain balanced spacing, refined art direction, a cohesive color palette, and a sophisticated print-design finish. Vertical 3:4 composition, high resolution, natural lighting, polished editorial layout, aesthetically pleasing, realistic-to-illustration transformation.
Avoid clutter, excessive text, distorted anatomy, inconsistent facial features, harsh colors, heavy borders, and unnecessary graphic elements. How to write prompts for this model
Describe the scene in full sentences
Google's guide says to describe a scene in rich detail, because the more specific you are, the more control you have. Its template for photos is a photorealistic type of shot of a subject in a setting, followed by lighting and camera angle. Creators go long: the 90 prompts on this page have a median of 1,749 characters, about 250 words, and 50 of them name lens, framing or depth of field. Source: Google: Photorealistic scenes · AgentCraft: Nano Banana 2.1 and Seedance 2.5 prompt data
Say why you need the image
Two of Google's best practices are to give context and intent, so the model knows what the image is for, and to break a complex scene into ordered steps. A product photo for a listing, a poster or a profile picture each changes what a good result looks like. Source: Google: Best practices
For edits, name the part to change and say the rest stays
You do not need to draw a mask: describe the target in words and add keep everything else in the image exactly the same. For a face or a logo, describe it in detail and say its features remain completely unchanged. Creators do this: 24 of the 32 edit prompts here say keep, preserve or do not alter, against 11 of 58 that start from text. Source: Google: Inpainting with semantic masking · AgentCraft: Nano Banana 2.1 and Seedance 2.5 prompt data
Number your reference images and give each a job
Nano Banana 2.1 takes up to 14 references, with resemblance kept for up to 4 characters and fidelity for up to 10 objects. Google's template for several uploads is to create a new image by combining the elements from the provided images, then say which element comes from which. Only 2 prompts on this page number their uploads, so this is room to be clearer than most. Source: Google: Use up to 14 images · AgentCraft: Nano Banana 2.1 and Seedance 2.5 prompt data
Describe what should be there
Google calls this a semantic negative prompt: describe the scene you want instead of listing what to leave out. 51 of the 90 prompts here still say no, avoid or without somewhere; when a result keeps the thing you banned, rewrite that line as a positive description. Source: Google: Best practices · AgentCraft: Nano Banana 2.1 and Seedance 2.5 prompt data
Quote the text, then the font and layout
For words in the image, Google asks for the exact text, the font style and the overall design, and lists among its limitations that it works best to generate the text first and then ask for an image containing it. 25 prompts here put the wording in quotes. Source: Google: Accurate text in images · Google: Limitations
Set size and ratio, then refine in small steps
Size is 1K by default, or 2K and 4K, written with an uppercase K. 49 prompts here name an aspect ratio in the text. After the first result, Google suggests small changes in follow-up turns rather than rewriting the whole prompt. Source: Google: Aspect ratios and image size · Google: Best practices
Questions about this model
What is Nano Banana 2.1?
Google's image generation and editing model released on October 6, 2026. Google says it outperforms its previous image models, with the biggest gains in visual design, mask-based editing and subject consistency. Its API name is gemini-nano-banana-2.1. Source: Google on X
How much does Nano Banana 2.1 cost in the API?
Per image: $0.0336 at 1K, $0.0504 at 2K and $0.113 at 4K, from $30 per million image tokens. Input is $1.50 per million tokens. The Batch API halves every price, and there is no free tier. For comparison, Nano Banana Pro costs about $0.134 per 1K or 2K image and $0.24 at 4K. Source: Gemini API pricing
Nano Banana Pro vs Nano Banana 2.1: which should I use?
For most work, 2.1: it costs less than half as much per image and takes more object references, 10 against Pro's 6, plus the 1:4 to 8:1 ratios. Pick Nano Banana Pro (Gemini 3 Pro Image) when you need more people kept consistent, 5 against 4, up to 3 style references, or text-heavy professional assets, the case Google's guide recommends it for. Source: Google: Use up to 14 images
How many reference images can I use?
Up to 14 in one request. Google says it keeps the resemblance of up to 4 characters and the fidelity of up to 10 objects in one workflow. Source: Google: Use up to 14 images
Which sizes and aspect ratios does it support?
1K by default, plus 2K and 4K. Beyond the usual ratios it adds 1:4, 4:1, 1:8 and 8:1 for tall and panoramic images. The 512px size of Gemini 3.1 Flash Image is not available on 2.1. Source: Google: Aspect ratios and image size
Can I edit part of a photo without drawing a mask?
Yes. Google calls it semantic masking: describe the element to change in words and tell the model to keep everything else in the image exactly the same. Source: Google: Inpainting with semantic masking
Which languages work best in prompts?
Google lists the languages with the best performance, including English, Japanese and Chinese (zh-CN). All 90 prompts on this page are in English. Source: Google: Limitations
Do Nano Banana 2.1 images carry a watermark?
Yes. Google says all generated images include a SynthID watermark. Source: Google: Limitations
How long should a Nano Banana 2.1 prompt be?
As long as the image needs. We matched 81 Nano Banana 2.1 prompts from X with their like counts: pick one liked and one less-liked prompt at random and the liked one is longer only 49% of the time. The median liked prompt is 1,503 characters, the median less-liked one 1,857, and a 59-character newspaper collage sits in the top quarter. Source: AgentCraft: Nano Banana 2.1 prompts that get liked
What do the most liked Nano Banana 2.1 prompts have in common?
Two things passed our test. The word photorealistic or hyper-realistic appears in 49% of the top half against 25% of the bottom, and all 6 prompts written as JSON are in the top half, four of them portraits. Aspect ratios, keep lines, camera terms, negatives and labeled blocks showed no difference. Source: AgentCraft: Nano Banana 2.1 prompts that get liked
What do people make with Nano Banana 2.1?
Mostly portraits. Of the 90 prompts on this page, 46 are portraits, 10 illustrations, 8 turn a photo into art, 8 are realistic scenes and 5 are posters. 32 start from an uploaded photo, and those edits run longer, a median of 2,066 characters against 1,720 for prompts written from scratch. Source: AgentCraft: Nano Banana 2.1 and Seedance 2.5 prompt data
How do I keep a face unchanged when editing a photo?
Give the face its own sentence. In portrait edits from an uploaded photo, 81% of Nano Banana 2.1 prompts lock the face or identity, against 62% for Nano Banana Pro. One example opens a block with IDENTITY LOCK: Preserve the exact facial identity of the reference person. Source: AgentCraft: Nano Banana Pro vs 2.1 prompts
Can I reuse my Nano Banana Pro prompts on 2.1?
Yes, as a start. Google's guide recommends 2.1 for all new projects. Then add what Pro prompts usually skip: an aspect ratio, which 53% of 2.1 prompts name against 23% for Pro, and in edits one sentence that locks the face. Source: AgentCraft: Nano Banana Pro vs 2.1 prompts
Can Nano Banana 2.1 use Google Search, or read a video or PDF?
Yes. It accepts text, image, video and PDF input and supports grounding with Google Search, plus a thinking setting of minimal, medium or high, medium by default. Source: Gemini API: Nano Banana 2.1