Doubao Seed 2.1 Turbo: the default text tier

Quick answer: Doubao Seed 2.1 Turbo is the tier every account uses for text work until you change it: it reads the script, writes with AI when you ask, and generates each episode’s storyboard, at 50% of the base text rate. It handles most scripts and most episodes; when a storyboard fails its format check twice or a long script strains it, the Pro and Evolving tiers are the usual next step.

Still from “The Eagle's Vow”, an AI short drama generated end-to-end by SceneMixer (9 characters, 1 episode) — Sample: “The Eagle's Vow” — Realistic HD, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Which model is best puts the text tiers next to the image and video ones.

Where you pick it

Settings → Model Preferences → Text Model. The choice applies to the three text jobs that cost credits — reading a script, writing a script with AI, and generating an episode’s storyboard — from the next task on. Translations of what you see on screen and the small helper calls do not follow it. Nothing already generated is redone by switching.

Left alone, this is the tier you are on.

What it does on this site

Three jobs. Reading: it turns a script into the cast, locations, props and episode outlines you approve in step 1; very long scripts are read in two passes automatically. Writing: when you give it a premise instead of a script, it writes the script in your interface language. Storyboards: it breaks an episode into segments and shots in the strict format the video tiers read.

What it costs

On this tier, reading a script costs 2 credits per thousand characters (a thousand equivalent characters for alphabet-based scripts, see the pricing page), a storyboard costs 1 credit per hundred characters of the episode’s share of the script, and AI writing costs 2 credits per thousand characters written. That is 50% of the base rate. Most failed tasks are refunded automatically; a few kinds of failure hold the credits until support checks the task.

Pro and Evolving are at 100% of the base rate, twice this tier.

Where it is enough

Scripts of ordinary length in Chinese or English, episodes with a handful of characters, storyboards where the site’s own checks pass on the first or second draft. That is most projects. The storyboard is checked for format and language before it is saved; if a draft fails, the site asks for one more automatically and only then reports a failure.

Where to step up

When an episode’s storyboard fails twice in a row, when a very long or unusually structured script comes back with episodes missing. Switch the preference and regenerate just that episode; nothing else is redone.

Common errors

What you may meet on this tier:

What you see	Usual cause	What to do
A long script or a dense episode fails	The reply ran past what one call can return; the site already ran it once more	The credits stay held until support checks the task. Trim the script or split it before running again
Storyboard generation failed	Neither of two drafts came back as a usable storyboard	Nothing was saved or charged; the credits stay held until support returns them. Regenerate, or switch tier
“The generation service hit a temporary problem. You weren’t charged — feel free to try again.”	The service was saturated; the site already tried again once	Try again in a few minutes
The storyboard came back in the wrong language	The tier ignored the language setting	The site redoes it once automatically; if it still arrives wrong, regenerate or switch tier

	This tier
Role	Default for reading, writing and storyboards
Rate	50% of base
Long scripts	Read in two passes automatically
Format checks	Retried once by the site before a failure is reported

FAQ

Does the text tier change my videos?

Only through the storyboard it writes. The video tiers render whatever storyboard you approve.

Is the default tier good enough for a whole series?

For most series, yes. Step up per episode when a storyboard keeps failing.

Why is it half the base rate?

Tier rates follow what each tier costs to run.

Does switching tiers re-read my script?

No. A script is read once per project; switching affects later tasks. To use the new tier for a storyboard, switch before you regenerate it.

Which tier writes the free first-episode storyboard?

Only this one. The free first-episode storyboard of your first project applies when it is generated on the default tier; on any other tier that episode is charged at the tier’s rate.

Read a script on the default tier

Upload a script and see the cast and episodes it produces before you spend on a higher tier.

Start a project

Updated September 27, 2026