Chop the tomatoes, cucumber, and bell pepper into rough pieces and place them in a blender along with the minced garlic.
Add the red wine vinegar, olive oil, salt, and black pepper to the blender.
Blend on high speed until the mixture is completely smooth and slightly frothy.
Taste the gazpacho and adjust the seasoning with additional salt, vinegar, or olive oil as needed.
Transfer the soup to a covered container and refrigerate for at least 2 hours to allow the flavors to develop and the soup to chill thoroughly.
Stir before serving, then ladle into bowls and garnish with fresh herbs, diced vegetables, or a drizzle of olive oil if desired.