Short answer
If you need premium, highly stylised single-image concepts and you have an experienced prompt artist, choose Midjourney. If your priority is repeatable, batchable character sheets, in-project asset management, and the ability to train or lock a visual style (custom models/inpainting), choose Leonardo AI. Both can produce strong concepts — pick by whether you value raw artistic variety (Midjourney) or production-ready consistency and workflow control (Leonardo).
Recommendation
- For indie studios making character concept sheets intended to be consistent across dozens of characters and iterative revisions: lean Leonardo AI. It gives better project controls, inpainting/edits, and tools for building/locking styles. Use Midjourney as a creative ideation tool for quick inspirational passes.
Decision criteria (how to choose)
- Style consistency required: Leonardo > Midjourney (custom models, style locking). Midjourney is more variable and artistically exploratory.
- Batch output & pipeline: Leonardo > Midjourney. Look for project folders, batch rendering, and API/export options.
- Turnaround time per pass: Midjourney is fast for single-image exploration; Leonardo can be faster overall once models/presets are set up for batches.
- Editing & iterations: Leonardo (inpainting, fine-tune) vs Midjourney (rerolls, variations). Leonardo’s localized edits make revisions to an existing sheet simpler.
- Licensing and commercial use: Both offer paid tiers for commercial use but terms vary. Confirm current TOS for your subscription level before committing.
- Budget & team skill: Small team/low budget: Midjourney is simple to start. Larger teams wanting a repeatable pipeline: Leonardo’s investment pays off.
Best-for / Avoid-if
- Best for Midjourney: rapid creative exploration, varied art styles, when an artist will curate many outputs. Avoid if you need strict style consistency across many characters.
- Best for Leonardo: batch concept sheets, consistent style across multiple outputs, detailed iterative edits, and building a studio library. Avoid if you want wild stylistic variety with minimal setup.
Practical checklist to run a 2-week trial and decide
1) Pick 10 target characters (short briefs + 2–3 reference images each).
2) Create 3 prompt templates: silhouette/pose sheet, color turnaround, close-up face expression. Use the same templates for both tools.
3) Timebox: allow 1 full day per tool to set prompts/presets and get 3–5 examples per character.
4) Measure: time per usable sheet, number of usable outputs per 10 generations, ease of targeted edits (change hair/color/face). Track licensing clarity and export workflow.
5) Test consistency: try locking style with a custom model or seed (Leonardo) and compare variance vs Midjourney’s best-match runs.
6) Evaluate throughput: how many concept sheets/day can each tool produce after presets are tuned.
7) Confirm legal: have legal/producer review both tools’ current commercial use terms.
8) Decide and document: save final prompts, seeds, and a small style guide for your art team.
When the right answer depends
- Budget: Midjourney cheaper to prototype; Leonardo may require more upfront time/cost to train models.
- Skill level: Midjourney favors strong prompt/art direction; Leonardo rewards setup and asset management.
- Workflow stage: Concept iteration = Midjourney; production-ready sheets and handoffs = Leonardo.
If you want, I can draft the 3 prompt templates and a 10-character test matrix to run through both tools.
Compare Midjourney and Leonardo AI