Create 4K Images from Text with Seedream 4.5

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Overview

Seedream 4.5 is a text-to-image model built for creators who need real resolution, not just a usable preview. On Picasso IA, you type a prompt, choose a resolution up to 4K, and receive a finished image in seconds. Whether you're mocking up a product shot, generating a poster background, or building reference art for a client presentation, this model delivers pixel-dense results that hold up at full size. The 4096-pixel output ceiling means files are genuinely ready for print and large-format screens, not just on-screen approval. Batch mode lets the model produce up to 15 connected images when your project calls for a series rather than a single frame.

How It Works

Write a prompt describing the image you want: subject, setting, lighting, color palette, and mood
Select a resolution: 2K (2048px), 4K (4096px), or custom dimensions between 1024 and 4096 pixels on either side
Pick an aspect ratio that matches your target format, from 1:1 for social posts to 21:9 for cinematic banners
Optionally upload one or more reference images to steer the style or composition of the output
Hit generate and download the finished image; enable sequential mode to receive a batch of up to 15 related images in one session

Frequently Asked Questions

Do I need programming skills or technical knowledge to use this? No, just open Seedream 4.5 on Picasso IA, adjust the settings you want, and hit generate.

Is it free to try? Yes, Seedream 4.5 is available to try on Picasso IA without a paid plan. Some resolution and batch settings may use credits, so check your account balance before running a large batch.

How long does it take to get results? A single 2K image typically arrives in a few seconds. 4K outputs and multi-image batches take longer, usually under a minute depending on current server load at the time of generation.

What output formats are supported? The model returns standard image files you can download immediately. Resolution, aspect ratio, and pixel count are fixed before generation, so the output always matches the dimensions you specified.

Can I generate multiple images at once? Yes. Set sequential image generation to auto and specify a maximum image count between 1 and 15. The model decides how many related images fit the prompt and produces them in a single run, so you can review a full set before downloading.

What if the result doesn't match what I described? Try a more specific prompt. Add details about lighting, color, composition, or style. Uploading a reference image also helps pull the output closer to what you have in mind, especially when your description involves a specific visual style or color range.

Credit Cost

Each generation consumes 1 credit

1 credit

or 5 credits for 5 generations

Features

Everything this model can do for you

2K and 4K output

Produce images at up to 4096x4096 pixels, suitable for print or high-resolution displays.

Multi-image batches

Generate up to 15 related images in one run when sequential mode is set to auto.

Image-to-image input

Upload 1 to 14 reference images to blend existing visuals into the generated output.

Flexible aspect ratios

Choose from nine ratios including 1:1, 16:9, 9:16, and 21:9 to match any publishing format.

Custom dimensions

Set a specific width and height between 1024 and 4096 pixels for precise layout control.

No watermarks

Download clean, full-resolution files ready for client delivery or direct publishing.

Flexible prompt-driven creativity

Ideal for both art and commercial content creation

Use Cases

Generate a sharp 4K product image from a text description of the item and its background

Create a set of related character variations in one run by enabling multi-image mode and writing a single descriptive prompt

Turn a rough sketch or reference photo into a polished 2K illustration by uploading it alongside your style prompt

Produce portrait and landscape versions of a campaign visual at different aspect ratios without re-running a separate session

Build a sequence of story scenes by letting the model auto-generate up to 15 connected images from one narrative prompt

Set custom pixel dimensions for texture maps or background plates needed in design or 3D workflows

Generate multiple logo concept directions from a written brand brief, then download the cleanest result

Support rapid prototyping in design workflows

Examples

2048x2048

16:9

15.2s

Max Images: 1

Sequential Image Generation: disabled

A warm, nostalgic film-style interior of a cozy café, shot on 35mm-inspired digital photography with soft afternoon sunlight filtering through the front windows. Wooden shelves display neatly arranged ceramics, pastries, and coffee beans. Hand-painted signage on the main interior window reads ‘Seedream 4.5’ in clean, classic lettering, similar to boutique branding. A vintage bicycle with a wicker basket is visible outside the entrance, casting soft shadows on the floor. Rich textures, natural light, warm tones, subtle grain, and calm neighborhood-café ambiance.

Match

39.7s

Max Images: 1

Sequential Image Generation: disabled

new york

Match

1m 2s

Max Images: 1

Sequential Image Generation: disabled

an abstract modern art painting of glass fruit, the glass shines with an iridescent flare, the fruit is transparent