Generate Images up to 4K Free with Sana

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Overview

Sana is a text-to-image AI model that turns written descriptions into finished visuals at resolutions up to 4096x4096 pixels. It runs fast, so you see results in seconds rather than minutes. On Picasso IA, you can access Sana with no setup, no code, and no prior design experience required. You pick a model variant based on your needs, type a prompt, and the image appears. Whether you're mocking up an idea, producing a visual for a client project, or just experimenting with styles, Sana handles photorealistic scenes, digital illustrations, and abstract imagery from one interface.

How It Works

Type a description of the image you want, including subject, setting, mood, and any stylistic details that matter.
Choose a model variant: 1600M for maximum image detail, 600M for faster turnaround, and a multilingual variant if you want to write your prompt in Chinese.
Set your target width and height (up to 4096 pixels each), then optionally add a negative prompt to exclude anything you don't want in the result.
Adjust the guidance scale if you want the model to follow your prompt more literally, or lower it to allow more creative interpretation.
Hit generate, wait a few seconds, and download your finished image.

Frequently Asked Questions

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

Is it free to try? Yes, Sana is available to try on Picasso IA. Some higher-resolution runs or larger model variants may use credits depending on your plan, but you can start generating immediately.

How long does it take to get results? Most standard 1024px images are ready in a few seconds. Larger resolutions or the 1600M variants take a bit longer, but generation is still measured in seconds, not minutes.

What output formats are supported? Sana returns a clean image file you can download directly. There are no watermarks on the output.

Can I customize the output quality or style? Yes. Pick the model variant that fits your quality and speed needs, adjust the guidance scale to control how literally the model reads your prompt, and increase inference steps for more refined results.

How many times can I run the model? You can run Sana as many times as you want. Each generation uses credits based on the variant and resolution you select.

What happens if I'm not happy with the result? Change a few words in your prompt, try a different guidance scale, or add a negative prompt to push the output in a different direction. Small changes often produce noticeably different results.

Credit Cost

Each generation consumes 1 credit

1 credit

or 5 credits for 5 generations

Features

Everything this model can do for you

High-resolution output

Generates images up to 4096x4096 pixels, suitable for print and large-format display.

Multiple model variants

Choose between 600M and 1600M parameter builds to balance generation speed against image detail.

Multilingual prompts

Write your prompt in English or Chinese using the compatible multilingual variants.

Negative prompt control

Specify what to exclude from the output to steer results away from unwanted elements.

Adjustable guidance scale

Control how closely the model follows your prompt versus allowing more creative variation.

Fast generation

Produces a standard 1024x1024 image in seconds, making rapid iteration practical.

Wide style range

Handles photorealistic scenes, illustrations, abstract compositions, and concept imagery from a single interface.

Ideal for creative and commercial projects

Use Cases

Generate a product concept image from a written description, with output resolution up to 4096x4096 pixels for print or large-format use

Draft multiple visual directions from a single text prompt and compare them before committing to one

Create social media graphics by describing the scene, mood, and style you want in plain text

Write prompts in Chinese to generate culturally specific illustrations without switching to a different model

Use a negative prompt to remove unwanted elements, like blurry backgrounds or specific colors, from the generated image

Generate a high-resolution poster from a text description and download it ready for large-format printing

Rapidly iterate on character design concepts by adjusting prompt wording and re-running the model each time

Educational visuals and creative exercises

Examples

512x512

0.6s

Model Variant: 600M-512px-multilang

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

a cyberpunk cat with a neon sign that says "Sana"

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

a cyberpunk cat with a neon sign that says "Sana"

1024x1024

1.0s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

A very detailed and realistic full body photo set of a tall, slim, and athletic Shiba Inu in a white oversized straight t-shirt, white shorts, and short white shoes.

1024x1024

1.1s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

Astronaut in a jungle, cold color palette, muted colors, detailed

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

professional portrait photo of an anthropomorphic cat wearing fancy gentleman hat and jacket walking in autumn forest.

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

an old rusted robot wearing pants and a jacket riding skis in a supermarket.

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

an old rusted robot wearing pants and a jacket riding skis in a supermarket.

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

🐶 Wearing 🕶 flying on the 🌈

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

👧 with 🌹 in the ❄️

1024x1024

1.0s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

make me a logo that says "So Fast" with a really cool flying dragon shape with lightning sparks all over the sides and all of it contains Indonesian language

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

portrait photo of a girl, photograph, highly detailed face, depth of field

1024x1024

1.2s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

Pirate ship trapped in a cosmic maelstrom nebula, rendered in cosmic beach whirlpool engine, volumetric lighting, spectacular, ambient lights, light pollution, cinematic atmosphere, art nouveau style, illustration art artwork by SenseiJaye, intricate detail.

1024x1024

1.1s

Guidance Scale: 5

Pag Guidance Scale: 2

Num Inference Steps: 18

a cyberpunk cat with a neon sign that says "Sana"