In Music & SFX, Mirelo ranks #4 and Unity AI ranks #10. No independent quality tests found. Ranked on game-dev fit: commercial use on paid plans; no engine integration stated; API and official MCP server.
Free trial or credits onlyUnity Personal: 14-day free trial, then a paid subscription ($10/month per Unity's AI FAQ; currency not stated by vendor). Pro, Enterprise and Industry include monthly credits.
Commercial use: Mirelo: commercial on paid plans only terms. Unity AI: not stated by vendor terms.
Free plan: Mirelo: free plan (Free €0/month: 5,000 credits, watermarked exports, non-commercial) pricing. Unity AI: free trial or credits only (Unity Personal: 14-day free trial, then a paid subscription ($10/month per Unity's AI FAQ; currency not stated by vendor). Pro, Enterprise and Industry include monthly credits.) pricing.
API and MCP: Mirelo: public API, official MCP server. Unity AI: API not applicable, official MCP server.
Engine integrations stated by the vendor: Mirelo: none stated (standard file export). Unity AI: Unity.
Sound effects and ambience synced to trailer or gameplay video
Unity users who want AI inside the editor
What it does
Video-to-sound model (SFX 2.0) that generates sound effects, foley and ambience synced to a video while keeping its dialogue; also text-to-SFX, via a web studio, API and MCP server.
Unity's AI tools (Unity is retiring the "Unity AI" name): an in-editor assistant for project questions, code and Editor actions, plus generators for images, textures, sounds, 3D models and animations, metered in Unity Credits. The Unity CLI, MCP server and Unity's official agent plugin are free.
Verdict
For sound effects synced to trailer or gameplay footage; the free plan is non-commercial and watermarked, so anything you ship needs a paid plan.
For Unity 6 users who want AI inside the editor: credits are included on Pro, Enterprise and Industry, while Personal gets a 14-day trial and then a paid subscription. Unity says you own the outputs, but third-party generator terms also apply.
Tasks●
Music & SFX, Trailers & marketing
Coding assistants, Concept art & 2D assets, Textures & materials, 3D model generation, Music & SFX, Rigging, animation & mocap
Engines●
Any (standard file export / engine-agnostic)
Unity
Free plan●
Free plan Free €0/month: 5,000 credits, watermarked exports, non-commercial
Free trial or credits only Unity Personal: 14-day free trial, then a paid subscription ($10/month per Unity's AI FAQ; currency not stated by vendor). Pro, Enterprise and Industry include monthly credits.
Pricing
Free €0/month (5,000 credits, 3 projects, watermark on exports). Creator €20/month (24,000 credits), Studio €99/month (120,000), Scale €299/month (420,000), Business €999/month (1,440,000); extra credits €0.75–1.20 per 1,000; Enterprise custom. Billed monthly. Prices are published in euros only. source
Unity Personal: "Try Unity's AI tools free for 14 days, paid subscription available after trial", listed with a 1,000 monthly credit allowance; Unity's AI FAQ says the Personal trial "converts to a $10/month subscription" (currency not stated by vendor). Pro (from $2,310/yr) includes 2,000 monthly credits; Enterprise 3,000. "Special terms apply to Unity Credits." Credits reset each billing cycle and don't roll over; extra credit bundles are sold. The CLI, MCP server and official plugin are free to use. source
Export formats●
Not stated by vendor
Assets are created inside the Unity project
Commercial use●
Commercial on paid plans only Terms (last updated 9 Oct 2026): Free Plan users may use the Services and Output "exclusively for non-commercial purposes"; Paid Plan users may use them for commercial and business purposes. Rights in Output vest in you, subject to the plan limits and the Acceptable Use Policy (including its limits on training AI models). Free-plan output may carry a watermark and must credit Mirelo as the sound provider. source
Commercial use: not stated by vendor Unity's AI Guiding Principles say you own your input and output data, regardless of the partner model used, and that you're responsible for making sure generated assets don't infringe third-party rights. Using the generators is also governed by third-party terms (Layer, Scenario, Uthana). Generated assets carry "UnityAI" metadata. Commercial-use terms for outputs aren't stated separately. source
Revenue share / caps
Not stated by vendor
Not stated by vendor
API●
Available. Mirelo API (text-to-SFX and video-to-SFX) source
Not applicable. Editor feature
MCP server
Official MCP server. Hosted Mirelo MCP for Claude, Cursor, ChatGPT and other MCP clients source
Official MCP server. Unity MCP server provided through the Unity CLI (Unity 6+) 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.
