Leonardo.AI is an exciting and capable text-to-picture solution, one of its advantages over Midjourney is the free trial option. After creating an account, you get 150 tokens, for which you can take up to 150 small pictures.
Consider that if you want to start the Leonardo AI engines at full speed, the price of one image is also 25-26 tokens, i.e. with 5-6 images the credit is zero and you can buy it at the same price as in Midjourney (10 USD per month).