6 image models compared: Nano Banana 2.1 was fastest, GPT Image 2.5 most photorealistic in our poster test

Six models, all in one table

All prices use official provider pricing , in US dollars, checked on October 18, 2026. Resolutions refer to direct generation; style observations draw on community tests with visible sample images.

Scroll the table horizontally. “Our test” refers to the two groups of fal sample images below. Results from different prompts are not combined into one speed ranking; community timing conditions are listed at the end.

1080p price: GPT is the cheapest in this lineup, Ideogram is the most expensive

For 1080p delivery without reference images, using high for GPT and Ideogram , the image output fee from low to high is:

1. GPT Image 2.5: approximately $0.03975 per image , official calculator estimate. [2]
2. FLUX.2 [pro] = Seedream 5.0 Pro: $0.045 / image. [6] [10]
3. Nano Banana 2.1: $0.0504 / image , set to 2K level. [4]
4. Ideogram 4.5: $0.10 / image , using high for text-to-image. [8]

GPT / FLUX use 1920×1088 and Seedream uses 1920×1080; Nano / Ideogram use 2K landscape output resized to 1080p. Input and other charges are additional. Ideogram costs $0.03 at low; GPT costs about $0.159 at max, so the ranking applies only to the settings above. Midjourney starts at $10/month and is listed separately as a subscription.

Maximum resolution: Nano Banana 2.1 leads; GPT supports 4K landscape output

Nano Banana 2.1's square 4K resolution is 4096×4096, the highest total pixel count; GPT Image 2.5 can generate 3840×2160 pixels. Seedream reaches up to about 4.62 MP, FLUX and Ideogram about 4 MP, and Midjourney's HD square is 2048×2048. For large images, first look at Nano Banana and GPT. [2] [4] [7] [9] [16] [20]

Speed: Nano Banana 2.1 was fastest in our poster test at about 24 seconds

Nano Banana 2.1 about 24 seconds, GPT Image 2.5 Sunburst about 35 seconds, Seedream 5.0 Pro about 65 seconds. All three ran through fal with the same product-poster prompt, retaining the first result from each. Ideogram’s roughly 16 seconds and FLUX’s roughly 23 seconds come from the separate portrait task. Original images and parameters appear below.

Compare images from shared prompts to choose a model

People and hands: FLUX stands out for materials; Ideogram follows instructions better

The same prompt, both 2560×1440, each generates one photo of the potter by the window. Requirements Holding the cup in the left hand, placing the right hand on the table while preserving natural skin texture, linen texture, and glass refraction.

Choosing from this test: If photographic texture matters most, FLUX is worth trying first. If the prompt has many action and composition requirements, include Ideogram in your shortlist too. Assess realism and instruction adherence separately.

Product posters: Nano was fastest; GPT looked most photographic

The same perfume-poster prompt tests glass, droplets, slate and three specified text strings. All three images correctly reproduce MOSS、AFTER THE RAIN、EAU DE PARFUM · 50 ml ; the main differences are composition and materials.

Choosing from this test: Quickly make a social media poster, Nano Banana 2.1 is more suitable; For product main visuals requiring coherent space and detailed materials, I would choose GPT Image 2.5. The "fastest and most realistic" in the title refers only to the first poster of this set of three models: the former is the measured waiting time, the latter is the editor's visual judgment.

 Create a photorealistic editorial photograph, horizontal 16:9. A fictional 38-year-old East Asian female ceramic artist at a worn oak workbench beside a large north-facing window. Waist-up view, her left hand holding a small imperfect ivory ceramic cup at chest height, right hand resting naturally on the table. An unbranded clear glass perfume bottle half-filled with pale amber liquid sits in the foreground. Overcast daylight, neutral white balance, soft shadows, visible natural skin pores, fine flyaway hairs, linen shirt weave, ceramic glaze imperfections, physically believable glass refraction. Camera at eye level, 50 mm lens, moderate depth of field. No beauty retouching, no text, no logos, no illustration. 

 A horizontal 16:9 advertising image for a fictional perfume named MOSS. One square clear glass bottle, pale amber liquid exactly half full, brushed silver cap, simple white paper label with the exact word "MOSS" in black. The bottle stands on a wet dark slate stone beside one small fern leaf. Soft daylight through a window from the left, believable glass refraction, tiny condensation droplets, detailed paper fibres, restrained neutral colour grading. The product should look photographed, not drawn or CGI. Leave the right half of the frame as clean pale sage negative space, with the exact headline "AFTER THE RAIN" and the smaller line "EAU DE PARFUM · 50 ml". Do not add any other objects or words. Premium minimal editorial art direction. 

Select the model according to the task

• Photorealistic hero images: GPT Image 2.5; photographic source images: FLUX.2 [pro]. The former's community sample images tend to be more detailed advertising images, while the latter emphasizes natural materials and photographic feel. [13] [14]
• Quick illustration, storyboard, and social media variant: Nano Banana 2.1. In same-prompt poster and comic comparisons, its lines, panels and blocks of color are more distinct. [13]
• For text-heavy posters, choose Ideogram; for multilingual marketing images, try Seedream. Evaluate typography and graphic composition in the former, and multilingual, structured information in the latter. [15] [17]
• Concept Art and Style Exploration: Midjourney V8.2. The oil painting series demonstrates unified colors and brushstrokes. [22]