КАДР

AI for online courses and schools: course covers, lesson illustrations and promo videos

Alen founder of KADR Updated 2026-10-14 5 min read

An online school needs a lot of visuals: course and lesson covers, video thumbnails, illustrations for materials, promo videos, launch banners. AI covers almost all of it cheaper and faster than a designer, especially if you lock in one style and one character in advance. An illustration costs 3 to 46 rubles, a short promo clip from 77 rubles (KADR data, October 2026). Below we look at an online school's four main tasks, which models to take for them, how to keep one style across the whole course and where AI will not replace a live teacher.

How many visuals an online school needs

If you count, the picture is impressive. A 10-lesson course means 10 lesson covers, a course cover, a thumbnail for each video, 30 to 50 illustrations for materials, launch banners, a promo video, announcement posts. Ordering all of this from a designer is slow and expensive, and making it yourself in template builders looks generic.

AI covers most of this volume. Let us go through the four main tasks.

Task 1. Course and lesson covers

The most rewarding task for AI.

Rule one: no text. Generate the picture with empty space for the title and add the text itself in an editor. Models handle Cyrillic badly, and redoing a cover because of a crooked letter is annoying.

Rule two: one style. All the course covers must look like one series. For that, the style description is written once and copied word for word into every prompt: palette, light, manner, mood.

Which models: Flux.2 for realistic covers (about 6 rubles), Recraft v4.1 Pro for graphic and illustrative ones (about 38 rubles), Seedream 4.5 if you need a detailed 4K picture for a large banner (about 8 rubles).

About video thumbnails: a large subject, contrast, free space for a short headline. 16:9 format.

Task 2. Lesson illustrations in one style

Illustrations make the material clearer and livelier. The main difficulty here is not the quality of an individual picture but unity: 40 illustrations must look as if one artist made them.

What you need for that:

  • One style in the prompt, copied into every generation unchanged.
  • One character, if they recur. A character cannot be described in words each time: you will get ten different heroes. Generate them once, build a set of angles and feed the picture as a reference. More in the article on character consistency.
  • One model for the whole course. Different models draw differently, and the series will fall apart.

For graphic illustrations in one style Recraft is a good fit; it is built for series. For realistic scenes, Flux.

Task 3. A course promo video

A short launch video: 20 to 40 seconds, several scenes, text and voice on top.

How to assemble it:

  1. Storyboard. Break the video into scenes, each with one action and one camera move. A text AI is handy for writing the script.
  2. Generating the scenes. Drafts on an inexpensive model, the final on the one best suited to the task.
  3. Editing. Voice, music and titles are added during assembly.

The detailed process is in the article on how to make Reels with AI: the logic of a promo video is the same. A separate tip on sound: if you add voice and music in the edit anyway, turn off native sound in the model; it doubles the generation price.

Task 4. A teacher avatar

A tempting idea: make a digital teacher and not record lessons. Technically it is possible; details in the article on the AI talking avatar.

But education has a nuance worth thinking about in advance. People buy a course largely for the sake of a specific expert: their experience, manner and the trust they inspire. A fully synthetic teacher undermines that trust, especially if students figure it out.

A sensible balance:

  • A live person teaches the main lessons. That is the value of the course.
  • The avatar covers the routine: announcements, platform instructions, short explanations, material updates. Things that change often and are inconvenient to re-record every time.

And remember: if the avatar is made from a photo of a real teacher, you need their consent, and some models will refuse to work with a real face.

What it costs

An estimate for a 10-lesson course, KADR prices for October 2026:

What Quantity Model Approximately
Lesson and course covers 11 Recraft v4.1 Pro 417 rubles
Lesson illustrations 40 Flux.2 Pro 253 rubles
Video thumbnails 10 Flux.2 Max 126 rubles
Promo video, 5 scenes 5 Veo 3.1 Fast 632 rubles
Margin for regenerations x2

This is not a public offer.

In total about three thousand rubles for all the course visuals with a margin for failed attempts. More on saving on video in the article on how much a minute of AI video costs.

About rights to the visuals

If you sell a course, it is worth understanding how rights to AI images work: authorship here depends on your creative contribution, not on pressing a button. Briefly and without legal fog in the article on copyright for AI images.

In short

AI covers most of an online school’s visuals: covers, thumbnails, illustrations, promo videos. The key is to keep one style across the whole course, generate without text and add it separately, and set a recurring character with a picture. An avatar is good for routine, but the main lessons are better taught by a live expert: that is who people pay for.

Frequently asked questions

Can I make a course cover with AI?
Yes, it is one of the best tasks for AI. Generate the picture without text in the right format, and add the course title in an editor: text inside a generation, especially Cyrillic, often comes out badly. For consistency across all covers, use the same style in the prompt.
How do I make lesson illustrations in one style?
Formulate the style description once and copy it word for word into every prompt. If the illustrations have a recurring character, generate them in advance and feed the picture as a reference. Recraft suits graphic illustrations well, Flux realistic ones.
Can I make a course promo video with AI?
Yes, a short promo video is assembled from several generated scenes following a storyboard. Each scene is one action and one camera move. Voice-over and music are easier to add in the edit.
Can an AI avatar replace a teacher?
For service videos (instructions, announcements, short explanations) an avatar works. But in education, trust in a specific expert is the key value, and a fully synthetic teacher undermines it. It is better when a live person teaches the main lessons and the avatar covers the routine.
How much do course visuals made with AI cost?
Covers and illustrations cost 3 to 46 rubles each, a short clip from 77 rubles (KADR data, October 2026). A full set of visuals for a 10-lesson course usually comes to about three thousand rubles including regenerations.

Course visuals in an evening

On KADR the models for covers, illustrations and clips are gathered in one window: you can build a character, make a series of illustrations and a promo without switching between services. Pay in rubles, the price is shown before you start, tokens never expire.

Try it
Alen
Founder of KADR. I connected the generation models directly through their APIs, so I write about working processes and real prices, not advertising promises.