DALL·E 3's strength is comprehension. It follows long, messy natural-language prompts closely, handles in-image text better than most, and lives inside ChatGPT so you can refine results conversationally. For accurate, no-fuss illustration where following the brief matters, it is the most frictionless option.
Midjourney still leads on raw aesthetic quality — the most striking, art-directed results come from it, with finer control over style and mood. The cost is a steeper learning curve and a less literal reading of prompts. Pick DALL·E 3 for accuracy and ease; pick Midjourney when the image has to look exceptional.