Which generation model should you use for comic panels?

A storyboard can look right on paper and still fall apart once the images come back. The usual cause is not the plot. It is picking a model that does not match the job: a rough layout, a finished panel, or a retry of one shot. KoalaStudio currently labels three generation models in Story Mode. This note describes those labels and how to choose among them.

The short version

• Free Model is the default for free accounts. Use it to test whether the story splits into sensible panels.
• Standard Pro is the upgraded studio model, described in the product as deeply customized from Nanobanana 2 Pro. Use it when you want a cleaner pass after the storyboard is stable.
• GPT Image 2.5 is labeled medium quality. Use it when a shot needs a different reading of the same prompt, especially faces, props, and lighting.
• Generate one screen or one shot at a time once you care about the result. A full page squeezed into a single image makes faces and lettering too small.
• Dialogue belongs in the shot’s dialogue field. Do not rely on the image model to typeset a whole conversation.

What the three models are

The names below match the Story Mode model picker. Free accounts stay on the Free Model. Standard Pro and GPT Image 2.5 unlock after you upgrade. Each image generation can use credits, so it is worth knowing which pass you are paying for.

Pick by the job, not by the name

There is no single best model for every panel. Start from the decision you are making.

Where the model sits in the workflow

Story Mode asks for a story between 20 and 8,000 characters, an art style, and a number of screens. The styles are Manga, Webtoon, Western comics, Watercolor, Cyberpunk, and Noir. The model generates a storyboard first: screens, shots, scene descriptions, and dialogue. Images come after you review that board.

1. Write the story with names, clothes, and the place. Vague stories produce vague panels.
2. Pick one style and keep it for the whole board. Mixing “noir” in the story and “watercolor” in the picker fights itself.
3. Create the storyboard and read every shot description before generating images.
4. Generate images for the shots you accept. Retry a single shot instead of rebuilding the page.

Limits that show up on a comic page

1. Lettering. Short signs can work. Paragraphs inside a balloon usually do not. Put the spoken line in the dialogue field and leave space in the prompt.
2. Identity. Repeating “the girl” is not a character. Repeat the same visible identifiers: hair, jacket, bag, age.
3. Left and right. If who stands where matters, say it. Then check the image before you accept it.
4. Too many events in one shot. One action per shot. A chase, a confession, and a punch do not belong in the same frame.

Two prompts that respect those limits

These are editorial examples for a single landscape panel. They are not sample outputs.

One comic panel, manga style. An adult courier with a short black bob, teal jacket, orange scarf, and red shoulder bag waits beside a red bicycle outside a railway station at dusk. Medium shot, eye-level, clean ink lines, warm window light. A large sign reads LAST TRAIN. No other text. Leave empty space above the courier for a caption.

The next panel, same style. The same adult courier — short black bob, teal jacket, orange scarf, red shoulder bag — hands a cream envelope to an elderly bookshop owner across a wooden counter. The courier stands on the left, the owner on the right. Afternoon window light. No text.

Before you keep either image, check four things: the identifiers, who stands on which side, how many people are in frame, and any extra text the model invented. Change one instruction at a time. Open Story Mode when the story itself is ready.

Questions before you generate

Is the Free Model enough to start?

Yes, for the first pass. It is there so you can see whether the story becomes a readable board. Move to Standard Pro or GPT Image 2.5 when a shot is worth a cleaner render. Plan details live on Pricing.

Can one image be a whole page?

You can ask for a multi-panel layout, and the editor already has 1-panel, 2-panel, 3-panel, and 2×2 grids. For anything you want to keep, generate the shots separately and assemble them on the screen. A whole page in one image shrinks every face.

Will the character stay the same across a chapter?

Only if you keep saying who they are. Put the same hair, clothes, and props in every shot prompt, and check each result. A reference description helps. It does not guarantee the next panel.

Can I switch models for a single shot?

Choose the model before you generate. If a shot fails, change the prompt or the model and regenerate that shot. You do not need to throw away the rest of the storyboard.

This is a product guide for the models KoalaStudio shows today. It is not a leaderboard, and it does not quote third-party benchmark scores.