Pricing
Start free.Pay as you make.
100 free credits with no signup. Browser tools are free forever. Credits never expire, and failed generations are always refunded.
Free to start
Guest
$0· 100 credits
No signup, no card. Open the Studio and start making.
- All 17 tools
- 100 credits for AI tools
- Free, unlimited browser tools
- Your library, in this browser
Free account
$0· +200 credits
Sign up and your guest work and credits come with you, plus 200 more.
- Everything in Guest
- +200 bonus credits
- Your library on every device
- Publish games to the Arcade
- API keys + MCP for your coding agent
Credit packs
1,000 credits
$10one-time
1.00¢ per credit
Makes up to
- Game Genie builds200
- Lite images333
- Music clips100
2,750 creditsMost popular
$25one-time
0.91¢ per credit · +10% bonus
Makes up to
- Game Genie builds550
- Lite images916
- Music clips275
6,000 credits+20% bonus
$50one-time
0.83¢ per credit
Makes up to
- Game Genie builds1,200
- Lite images2,000
- Music clips600
Credits never expire · Failed generations refunded · Secure checkout by Stripe · Prices in USD
Price per run
Every tool, every price. Up front.
The Studio shows the exact price on the button before you click. Where a tool offers model tiers, you choose speed or quality per run. Prompt helpers (enhance, name and game ideas) cost 1–3 credits.
| Tool | What it does | Price per run | Model tiers |
|---|---|---|---|
| Make a Game | |||
| Game Genie | Describe a game. Play it in seconds. | 5–20 credits | Fast 5Pro 20 |
| Image | |||
| Image Forge | Prompt to game-ready art. | 3–16 credits | Nano Banana 2 Lite 3Nano Banana 2 8Nano Banana Pro 16 |
| Magic Edit | Change any image in plain English. | 3–16 credits | Nano Banana 2 Lite 3Nano Banana 2 8Nano Banana Pro 16 |
| Background Remover | Clean cut-outs with real alpha. | 3 credits | — |
| Sprites & 2D | |||
| Sprite Forge | Character to animated sprite sheet. | 3 credits | — |
| Pixel Snap | True pixel art from any image. | Free | — |
| Chroma Key | Green screen to alpha, instantly. | Free | — |
| Sprite Slicer | Slice, preview and tag animations. | Free | — |
| Atlas Packer | Frames to engine-ready atlas. | Free | — |
| Tile Forge | Seamless tiles and tilesets. | 3 credits | — |
| 3D & Materials | |||
| Voxel Forge | Any sprite to a 3D voxel model. | Free | — |
| 3D → 2D | Render 3D models into sprite sheets. | Free | — |
| Material Forge | Prompt to full PBR material. | 3 credits | — |
| Audio | |||
| SFX Lab | Retro sound effects, synthesized. | Free | — |
| Voice Studio | Character voices and narration. | 1–2 credits | Standard 2Lite 1 |
| Music Studio | Original game music from a prompt. | 10–25 credits | Clip 10Pro 25 |
| Video | |||
| Video Studio | Trailers, cutscenes and animation. | 40–150 credits | Lite 40Fast 60Standard 150 |
Engine licensing
Free until you're a hit.
One simple license for Janus Engine and Janus Studio. No runtime fees, no per-install or per-player charges, never retroactive.
Free to start
$0
Build and ship with Janus Studio and the engine free until your game earns $1M.
- The full Janus Engine
- Every Janus Studio tool (AI runs use credits)
- Commercial use from day one
- You own your game and everything you make
Over $1M
5%
A simple 5% royalty, or talk to us for a custom license.
- Only once your game passes $1M
- No runtime fees, no per-install or per-player charges
- Custom terms for studios, publishers and platforms
- Volume pricing on credits
Do credits expire?
Never. Credits you buy or earn stay on your account until you use them.
What happens if a generation fails?
You get the credits back automatically. You only pay for generations that succeed, and the Studio always shows the exact price on the button before you click.
Who owns what I make?
You do. Everything you make in Janus Studio is yours: the games, the art, the music, the voices. Each asset comes with a provenance record so you can prove it.
Can I use it commercially?
Yes. Sell your game, put the art on your store page, cut the trailer, print the merch. Commercial use is included on every plan, including the free credits.
What is a credit worth?
1 credit is $0.01 at the base pack. The $25 and $50 packs include 10% and 20% bonus credits.
Do my guest credits carry over when I sign up?
Yes. Everything you made as a guest, and every credit you have left, moves to your new account, and you get 200 bonus credits on top.
Which tools are free?
Pixel Snap, Chroma Key, Sprite Slicer, Atlas Packer, Voxel Forge, 3D → 2D, SFX Lab run in your browser and are free and unlimited, with or without an account.
How does the engine license work?
Build and ship with Janus Studio and the engine free until your game earns $1M. After that it's a simple 5% royalty, or talk to us about a custom license. No runtime fees, ever.