In Concept art & 2D assets, Leonardo.Ai ranks #5 and Midjourney ranks #9. No independent quality tests found. Ranked on game-dev fit: commercial use allowed; no engine integration stated; API and official MCP server. Leonardo's own models are on Artificial Analysis's text-to-image leaderboard, but near the bottom (best: Lucid Origin Ultra, #86 of 102), so it doesn't move it up.
Commercial use: Leonardo.Ai: commercial use allowed terms. Midjourney: commercial on paid plans only terms.
Free plan: Leonardo.Ai: free plan (150 fast tokens/day; creations are public) pricing. Midjourney: paid only (No free plan stated: "All Midjourney plans are subscriptions") pricing.
Shipping free-plan output in a paid game: only Leonardo.Ai allows it, per their published terms.
API and MCP: Leonardo.Ai: public API, official MCP server. Midjourney: API not stated by vendor, MCP not stated by vendor.
Engine integrations stated by the vendor: both: none stated (standard file export).
General image and video generation platform with trainable custom models; usable for concept art, item icons and texture ideas.
AI image (and video) generation on the web and Discord; used for concept art, key art and 2D game images. Four subscription plans, no free plan stated.
Verdict
For general concept art and icon ideas; free-tier output can be used commercially but is public and Leonardo holds rights to it, while paid plans give you ownership.
For concept and key art on a subscription; you own what you make on any plan, but studios over US$1M a year need Pro or Mega, and images are public unless you pay for Stealth.
Tasks●
Concept art & 2D assets, Textures & materials
Concept art & 2D assets
Engines
Any (standard file export / engine-agnostic)
Any (standard file export / engine-agnostic)
Free plan●
Free plan 150 fast tokens/day; creations are public
Paid only No free plan stated: "All Midjourney plans are subscriptions"
Pricing
Free: 150 fast tokens/day (public creations). Essential US$12/month, Premium US$30/month, Ultimate US$60/month (ex. tax). Team and API plans available. source
Basic US$10/month, Standard US$30, Pro US$60, Mega US$120 per month; annual billing US$96, US$288, US$576 or US$1,152 a year (20% off). Extra fast GPU time US$4/hr. source
Export formats
Not stated by vendor
Not stated by vendor
Commercial use●
Commercial use allowed Paid subscribers retain full ownership and IP rights. Free tier: Leonardo holds rights to the images but grants you a non-exclusive, royalty-free licence for commercial use; free creations are public. source
Commercial on paid plans only Terms of Service (effective 27 May 2026): you own the Assets you create; ownership persists if you later downgrade or cancel. A company (or employee of a company) with more than US$1,000,000 a year in revenue must be on Pro or Mega to own its Assets. Upscales of other users' images stay theirs. Content is publicly viewable and remixable by default (Stealth Mode on Pro/Mega only). Assets are provided AS IS, with no non-infringement warranty, and you indemnify Midjourney. source
Revenue share / caps●
Not stated by vendor
Company revenue over US$1,000,000/year requires Pro or Mega; no revenue share stated
API●
Available. API plans are separate from web subscriptions source
Not stated by vendor. No public API stated; the Terms say you may not use automated tools to access the Services or generate Assets source
MCP server●
Official MCP server. Hosted MCP server (needs API plan and key) source
Rows marked ● differ between the two tools. Licence badges: green = commercial use allowed (including any free plan or trial), amber = paid plans only, restricted, or allowed but with no free plan, red = not allowed, grey = not stated by vendor or not applicable. Read the vendor's current terms before you ship.