Insta carousel post

I’m working on an Instagram carousel for my startup, The 3rd Place, and I want the carousel to function as one seamless panoramic image when users swipe through all 7 slides.

The goal is to create a single wide café scene (warm, aesthetic, “third place” vibe) and then split it into 7 Instagram portrait slides (1080×1350 each). My challenge is that most AI image generators create separate images that don’t align perfectly at the edges, so when the slides are placed side-by-side, the panorama breaks.

Has anyone successfully created a seamless 7-slide Instagram panorama using AI tools like Midjourney, Flux, GPT Image, Seedream, ImagineArt, etc.? What’s the best workflow? Should I generate one ultra-wide master image and slice it afterward, use outpainting, stitch multiple images together, or use a different approach entirely?