Short recommendation
If you need to produce hundreds of consistent Shopify product mockups every week with minimal engineering overhead, lean toward Leonardo AI for the built-in batch/template features and image conditioning. Choose Midjourney only if your priority is the absolute highest stylized/photoreal output and you have dev resources to automate Discord/API workflows and enforce strict consistency.

Why (brief)
- Leonardo AI: has explicit template/batch tools, image-to-image/inpainting controls and UI features aimed at asset-based workflows — faster to set up for repeatable product shots with consistent lighting.
- Midjourney: excels at creative photoreal and painterly results and can be tuned for a consistent look, but its native UX is Discord-first and batch production at scale typically requires external automation or a paid commercial pipeline.

Decision criteria (use these to choose)
- Batch automation: choose Leonardo if you want native batch/template support with minimal engineering. Choose Midjourney if you can build or pay for automation.
- Exact lighting consistency: Leonardo’s image-conditioning and template/inpainting loop make it easier to lock down identical lighting across variations. Midjourney can match style with the same prompts + reference images but is less deterministic without engineering workarounds.
- Image quality needs: pick Midjourney for top-tier stylized or ultra-photoreal renders. Leonardo gives very good quality for commerce at typically lower friction and cost.
- Cost & throughput: Leonardo tends to offer better control-to-price for high-volume runs; Midjourney can become pricey if you need commercial-level throughput.
- Team & skills: Leonardo for non-developers/merchants; Midjourney for teams with devs or an automation integrator.

Practical checklist to get started (for hundreds/week)
1. Capture or create one “hero” base photo per SKU: neutral pose, consistent camera angle, high-res. This becomes your image2image/inpainting base.
2. Create a template prompt + fixed style tokens (lighting, camera, lens, mood). Save as a reusable prompt template.
3. Use inpainting or background-replace to keep product edges and shadows intact while swapping backgrounds/colors for consistency.
4. Batch-run small sets first (10–20) and inspect for lighting/white-balance drift; iterate prompt and seed settings.
5. Automate filename/metadata (SKU, color, variant) and output size to match Shopify image constraints.
6. Add a QA step: confirm shadows, reflections, and color accuracy against physical swatches.
7. Archive templates + reference images so new team members inherit the same settings.

Best-for / Avoid-if
- Best for Leonardo AI: non-dev teams, high-volume commerce runs, need for templates and repeatability, lower setup time.
- Avoid Leonardo AI if: you need a very specific signature artistic look only Midjourney can deliver.
- Best for Midjourney: premium photoreal/stylized output, small-batch high-impact imagery, or teams that can build automation.
- Avoid Midjourney if: you want out-of-the-box batch templating and minimal developer overhead.

Notes on trade-offs
Your final choice depends on budget (per-image costs and subscription), team skill (developer vs. non-dev), desired output quality style (photoreal vs commerce-consistent), and how much time you can spend tuning templates. If you want to explore Leonardo’s templates and batch features quickly, start there and run a 2-week pilot on 100 SKUs; move to Midjourney later if you need a different look.

Compare Leonardo AI and Midjourney