PROMPT GUIDE

Comparing AI Video Generators and How to Choose

There are many AI video generators, and each is good at slightly different things. The shortcut is to choose based on what you want to make. This guide compares the main AI video generators by purpose and explains how beginners can choose without getting lost. Prices, lengths and features change often, so only general tendencies are given here. Always check the official sites before use.

Last updated: 2026-10-22 approx. 3 min read

日本語版

The short answer

Choose an AI video generator by three questions: text or image as the start, anime or realistic, and whether you need sound. Compare two or so services with the same picture and prompt, and check prices and terms on the official sites right before use.

What should you decide before choosing an AI video generator?

Deciding three things first makes the choice easier. First, whether you start from text or from an image; second, whether you want anime or realistic; third, whether you need sound (dialogue or sound effects). If you want a consistent character look, choose one that works from images; if you want sound in one pass, choose one that supports audio.

Comparing the main AI video generators (general strengths)

Service	General strengths	Good for people who
Kling	Natural human motion, image to video	Want to animate people or start from an image
Runway	Video generation and editing in one place	Want to trim and join the videos they make
Sora	Building scenes from text	Want to make story-like scenes from writing
Veo	Video with sound in some versions	Want dialogue or sound effects made together
Vidu	Motion for anime-style art, reference images	Want to animate illustrations or anime-style characters

This table shows commonly mentioned strengths. Each service updates often, and something it was weak at can become a strength in the next version. Check prices, free usage, lengths and resolutions on each official site.

Which one should you choose for your goal?

As a guide: one strong at anime for illustrations, one with audio support for dialogue, and one with reference images for a consistent character.

What you want to make	What matters	How to choose
Animate an illustration a little (for social media)	Image to video, anime style	One with image to video that is strong at anime
Many videos of the same character	Reference images, consistent looks	One that works from reference images or the same picture
A short film-like scene	Building scenes from text, camera	One that is good at making video from text
Videos with dialogue	Audio generation	One that supports audio
Editing the videos too	Editing features	One that includes editing features

A common start frame for comparing AI video generators: front facing anime girl — 比べる時の共通の絵（アップ）

Wide shot of a girl on a beach at sunset, an example frame for comparing AI video tools — 比べる時の共通の絵（アップ）

Illustration usage rules

Steps for choosing as a beginner

Decide on one video you want to make (for example, a five-second clip of an illustrated girl turning around)
Decide whether to start from text or from an image
Pick two services with free trial options and make the video with the same picture and the same prompt
Choose based on how natural the motion is, how consistent the face stays and how easy it is to use
Before use, check on the official site what the terms say about how you may use the videos (commercial use and so on)

Prompt tips that work on every service

Even across services, the prompt approach is nearly the same. Writing subject, motion, camera, mood in that order with one motion per shot reduces breakage on any AI video generator. Comparing with the same picture and the same prompt makes the differences between services clear.

The girl slowly turns toward the camera and smiles. Her hair sways in a gentle breeze. The camera slowly pushes in. Soft afternoon light.

A shared prompt for comparing services: the girl turns slowly to the camera and smiles, her hair moves in a light breeze, and the camera moves slowly closer in soft afternoon light.

Static camera. Wide shot of a girl standing on a quiet beach at sunset, waves rolling in slowly, her coat moving in the sea breeze.

What it does: with a still camera, a wide view of a girl on a quiet beach at sunset, with waves rolling in slowly and her coat moving in the sea breeze.

Common mistakes when comparing, and fixes

Common mistake	Why it is a problem	Fix
Testing each service with a different prompt	You cannot tell whether a difference comes from the service	Compare with the same picture and prompt
Deciding from a single video	Results change every time with the same instructions	Make several on each service and compare
Judging by outdated prices	Prices and plans change easily	Check the official site right before use
Publishing without reading the terms	Use may be restricted	Check commercial and publishing conditions in the terms

Rinka's tips

Do not turn photos of real people or other people's artwork into videos without permission
Compare with short videos first. Longer videos break more easily

For how to write Kling prompts: How to Write Kling AI Prompts →

For how to write Runway prompts: How to Write Runway Prompts →

For anime-style video, see how to write Vidu prompts: How to Write Vidu AI Prompts →

For the steps of image to video: How to Use Image-to-Video AI (Steps to Animate a Still Image) →