Short answer: Unity's AI tools run on Unity Credits. Pro includes 2,000 a month and Enterprise 3,000. Unity Personal gets a 14-day free trial, then a paid subscription ($10/month per Unity's FAQ; currency not stated by vendor). Unity says you own your inputs and outputs, but third-party terms also cover its generators. The CLI, MCP server and official agent plugin are free.
Every statement below links to its source. Checked .
18 tools whose vendors document an official Unity plugin, integration or export target, in alphabetical order (this isn't a ranking). Most other tools export standard files (PNG, FBX, GLB, WAV and so on) that work in any engine: see all tools. Check each tool's commercial-use notes before you ship.
| Tool | Main task | Free plan | Commercial use |
|---|---|---|---|
 Charisma.ai | NPC & AI characters | Paid only | Commercial use allowed |
 Convai | NPC & AI characters | Free plan | Commercial use allowed |
 Crowdin | Localisation | Free plan | Commercial use: not stated by vendor |
 Gridly | Localisation | Free trial or credits only | Commercial use: not stated by vendor |
 Hyper3D Rodin | 3D model generation | Free plan | Commercial use: not stated by vendor |
 Inworld AI | Voice & dialogue | Free plan | Commercial use allowed |
 Ludo.ai | Concept art & 2D assets | Free plan | Commercial use allowed |
 Marble (World Labs) | Level & terrain generation | Free plan | Restricted (see notes) |
 Meshy | 3D model generation | Free plan | Commercial use allowed |
| modl.ai | QA & playtesting | Not stated by vendor | Not applicable |
 nunu.ai | QA & playtesting | Free trial or credits only | Not applicable |
 Retro Diffusion | Concept art & 2D assets | Free trial or credits only | Commercial use allowed |
 Rokoko Vision | Rigging, animation & mocap | Free plan | Commercial use: not stated by vendor |
 Scenario | Concept art & 2D assets | Free plan | Commercial on paid plans only |
 Skybox AI (Blockade Labs) | Textures & materials | Not stated by vendor | Commercial use: not stated by vendor |
 Sloyd | 3D model generation | Free plan | Commercial on paid plans only |
 Tripo AI | 3D model generation | Free plan | Commercial on paid plans only |
 Unity AI | Coding assistants | Free trial or credits only | Commercial use: not stated by vendor |
| Plan | Monthly credits | How you get access |
|---|---|---|
| Personal (free engine plan) | 1,000 (listed with the paid subscription) | 14-day free trial, then a paid subscription: "converts to a $10/month subscription" (currency not stated by vendor) |
| Pro (from $2,310/yr) | 2,000 | Included in the paid plan |
| Enterprise (custom pricing) | 3,000 | Included in the paid plan |
| Industry (custom pricing) | Not stated by vendor | Included ("Pro, Enterprise, and Industry customers receive access") |
Source: Plans & Pricing, Unity AI FAQ.
| Activity | Example credits |
|---|---|
| AI Assistant message | 4 to 1,500 or more |
| Image | 1–6 |
| Texture | 1–9 |
| 3D model | 8–13 |
| Sound effects | 1–5 |
| Music | 3–5 |
| Text to speech | About 3 |
| Animation (text to motion) | About 5 |
| Skybox | 2–5 |
| Video | 5–15 |
| Price per credit in money | Not stated by vendor |
Source: About Unity Credits.
Cursor, GitHub Copilot and Windsurf can connect to MCP servers.
There's a 14-day free trial. After that it's a paid subscription: Unity's FAQ says the trial "converts to a $10/month subscription" (the currency isn't stated). source
Unity's example range is 8 to 13 credits per generation, but it says actual use varies and the Unity Dashboard is authoritative. source
Unity's AI Guiding Principles say you own your input and output data. Its generators are also governed by third-party terms (Layer AI, Scenario, Uthana). source
No. They reset at the start of each billing cycle. source
Unity's FAQ says a third-party agent used through its AI gateway doesn't consume Unity credits, and the MCP server doesn't need credits. source
Yes, if you disclose it: the "AI description" field must name the AI tools used and what they generated. Follow Unity's submission guidelines. source
Other engines:UnrealGodotBlenderRoblox
Platform for building interactive stories and AI character conversations, with script flow tools and AI voices, published to web, VR or game engines via SDKs.
For story-driven AI character conversations on pay-as-you-go credits; its terms assign input and output rights to the customer.
Conversational AI characters for games and virtual worlds: NPCs with voice, knowledge and actions.
For conversational NPCs with a free tier to prototype on; its terms give you ownership of AI-generated content.
Localisation management platform for translating product strings, with Crowdin AI for translation, context enrichment and proofreading, plus an API and integrations.
For managing game text translation with AI assistance; the free plan works for one private project, but free-plan translations feed Crowdin's translation memory.
Content and localisation platform with a game-localisation use case: spreadsheet-style grids for strings, AI translation with linguistic context, AI voiceover files and an API.
For teams that want game strings, AI translation and voiceover files in one tool; there is no free plan, only a 14-day trial.
Rodin generates 3D models from text or images, with options like high-poly quad meshes; the platform also lists HDRI and texture generators.
For high-detail 3D generation; commercial rights on the Free and Creator tiers are unverified, so check its terms before you ship.
Realtime text-to-speech and LLM inference platform that can power voiced, interactive characters.
For realtime TTS and LLM-driven characters on pay-as-you-go pricing; its terms assign outputs to you.
Game ideation and asset tool: concept generation, sprites and sprite sheets, textures, plus a Unity editor plugin and API.
For Unity devs who want ideation and 2D assets in one place; its FAQ says you own what you generate, but free-plan sprite sheets are watermarked.
Generates persistent 3D worlds from text, images, video, 360° panoramas or blocked-out 3D layouts. Exports Gaussian splats and GLB meshes, and records camera flythrough videos.
For blocking out explorable environments or flythrough shots; exports go to Unity/Unreal via Gaussian-splat plugins, and commercial rights are listed on Pro.
Text-to-3D and image-to-3D model generation with AI texturing; paid plans add animation with 600+ motions. DCC bridge listed for Roblox, Blender, Godot, Unity and Unreal.
For quick text- or image-to-3D props with Godot/Unity/Unreal bridges; free output is CC BY 4.0, so you must credit Meshy unless you pay.
AI agents that test game builds without SDK integration: upload a build, describe tests in plain language, and get bug reports with video, logs and severity scores. Supports Android and desktop today; iOS is listed as in development.
For QA teams that want black-box automated testing of mobile or desktop builds; the site says very fast-paced gameplay isn't fully supported yet.
AI agents that play and test games on real PC and mobile devices from plain-English instructions, with session recordings, reports and an optional lightweight SDK. Console support is listed as coming soon.
For automated playtesting on real iOS/Android/PC devices; the free Starter credits are one-time, and API/MCP access needs the $200/month plan.
Pixel-art-specific image models for sprites, tiles, tilesets and animations, plus low-poly 3D model generation with export for Godot, Unity and Unreal. Also sells an Aseprite extension.
For pixel-art devs who want pay-per-image pricing with no subscription; the site says all output is yours for commercial use.
AI motion capture from video plus text-to-motion clips, exported via Rokoko Studio as FBX/BVH for Unity, Unreal, Blender and other tools.
For trying video-based mocap for free (30 seconds a month); commercial terms for its output are unverified.
Production-focused generative platform for game art: train custom style models on your own assets, generate images, textures, 3D meshes, video and audio. API-first with Unity/Unreal integration.
For studios that want custom style models trained on their own art; commercial use needs a paid plan (free output is personal/evaluation only).
Generates 360° panoramic skyboxes and environments (up to 16K and HDRI on higher tiers), with an API for in-app generation.
For 360° skyboxes and environment backdrops; the terms say you own your assets, but commercial terms below the Business tier are unverified.
Template-based and AI 3D generator for game-ready props and objects, with browser editor and plugins for Unity, Unreal and Blender on paid plans.
For game-ready props from editable templates with Unity/Unreal plugins; the free plan is personal-use only.
Text/image/multi-view to 3D model generation with retopology, segmentation and up to 4K/8K texture generation. DCC bridge lists Blender, Unity, Unreal, Godot and others.
For 3D models with retopology and engine bridges; the free plan is non-commercial, so shipping assets requires a paid plan.
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.
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.
Layer
Cursor
GitHub Copilot