November 11, 2026

The article examines three free AI video generation services: KREA AI, Z Sky AI, and Digin AI. For each, it describes the credit system, generation settings, and results of test generation. The author claims that the quality and capabilities of these tools are comparable to paid solutions; however, this claim was not verified within the scope of the article.

1. KREA AI

Credit System

The platform grants 200 credits daily. The balance refreshes every day. The author notes that, with daily refreshes, the user effectively gets an unlimited number of generations.

Replenishing Credits

The author describes a way to get new credits before the balance refreshes:

1. Go to the account section and log out.
2. Click "Log in" and choose email login.
3. Use a disposable email service that creates several temporary addresses. Such an address works for any platform that requires email registration.
4. Paste the disposable address into the login field. The platform sends a confirmation code to this address.
5. Enter the code and click "Continue". The account receives 200 new credits.

This procedure can be repeated each time the credits run out.

Model Selection and Settings

The model list includes Seedance 2, Seedance 2 Fast, Grok, and others. The cost of each generation in credits is shown next to each model. The author recommends the LTX model, since it uses few credits while still delivering acceptable quality.

Generation parameters:

• Mode: Start frame. The user uploads a reference image and adds a text prompt. The model uses both inputs.
• Audio: enabled so that the generation produces a soundtrack.
• Resolution: up to 768p. The author chose a lower resolution to save credits.
• Duration: from 5 to 10 seconds.

Result and Saving

The author ran a test generation with a simple prompt. In his assessment, the result was clear and clean. To save it, open the bottom part of the screen, click the three-dot icon, and select "Download".

2. Z Sky AI

Features

The service works without a credit system and is available for free. The author notes that the tool has existed for a long time, but many users do not know how to use it. The home page features examples of the author's generations.

How to Use

1. At the bottom of the screen there is a prompt field. The prompt is pasted from the author's collection.
2. An additional field lets you describe a specific sound or effect. Filling it in is optional.
3. Settings:
   • Aspect ratio: chosen depending on the publishing platform.
   • Resolution: from 720p to 2K.
   • Rendering mode: Cinematic.
   • Duration: from 5 to 30 seconds.
4. Click the generate button.

Limitation

Generation can take a long time. Requests are processed in a queue, since many people use the tool at the same time. The author considers this the price of a free service without credits. According to him, the result does appear, but with a delay.

The tool is suitable for longer clips and high-resolution videos if you are willing to wait.

3. Digin AI

Starting Balance and Models

The balance on first login with a new email address is 50 credits. The model list opens by pressing a small button. The list shows well-known models, with the cost of each listed in credits. For example, one model costs 30 credits and another costs 20.

A key feature of the service is that even paid models offer one free generation per day. This allowance is renewed every day. Several models are marked as available for a single daily use. Some models require switching to a paid plan, so they should be skipped.

By the author's calculations, about 10 cinematic clips can be created per day in total across different models.

Test Generation

The author chose the version 3.5 model because it produces the most realistic result among the available options. Parameters:

• Duration: 5 seconds. It cannot be increased.
• Aspect ratio: 16:9.
• Resolution: 540p.

The prompt was taken from the author's horror collection. After submission, the result was received, which the author rated as high quality. After generation, 20 credits remained on the balance.

Top-Up and Saving

To save the video, press the "Download" button. The file is saved directly to the device.

When credits run out, the user opens the credits section and enters a new email address. The procedure is the same as with KREA AI: a one-time address receives 50 credits.

Tool Comparison

Summary

• KREA AI provides 200 credits daily, supports generation with sound, and allows top-ups through disposable email addresses.
• Z Sky AI does not use a credit system, supports durations of up to 30 seconds and resolution up to 2K, but generation takes longer due to the queue.
• Digin AI provides daily free generation on several models and 50 credits with each top-up through a new email address.