Step 1: Understand the task
The task is to identify a free AI tool that can generate images from text descriptions.

Step 2: Research available options
There are several AI models and tools that can generate images from text、Some popular ones include DALLE, Stable Diffusion, and Midjourney、However, the task is to find a free option.

Step 3: Evaluate free options
DALLE: Originally, DALLE was not entirely free, but there have been developments and related models that offer free or more accessible versions.
Stable Diffusion: This is an opensource model that can be used for generating images from text、It is free and can be run locally or used through certain online interfaces that offer it for free.
Midjourney: Midjourney is another AI model that generates images from text、It is primarily accessed through a Discord bot and has a free trial, but it's not entirely free for extensive use.

Step 4: Identify a specific free tool
One of the most accessible free tools for generating images from text is Stable Diffusion、It can be used through various interfaces, including some online platforms that offer it for free, or by downloading and running it locally on a computer with sufficient hardware.

Step 5: Consider online platforms for Stable Diffusion
There are online platforms like Dream by Wombo and Craiyon (formerly DALLE Mini), which are free and can generate images from text、Craiyon is directly related to the concept of DALLE but is more accessible for casual, free use.

The final answer is: $\boxed{Craiyon}$