Plans & Credits
EngineForge uses a credit-based system for AI features. The IDE itself is free to download and use. AI chat, code generation, and Agent mode require credits.
Plans
| Feature | Free | Pro ($20/month) |
|---|---|---|
| AI messages | 2 trial messages | 200 per month |
| AI model | Claude Sonnet | Claude Sonnet |
| Unity Editor Bridge | Included | Included |
| Godot Editor Bridge | Included | Included |
| Project analysis | Included | Included |
| Ask & Agent modes | Included | Included |
| Credit top-ups | Not available | $20 = 200 credits |
| Top-up credits expire? | — | Never |
Free trial
Every new account gets 2 free AI messages to try the full experience. Same Claude Sonnet model, same engine bridge integration, same Agent mode. No credit card required. When your trial messages are used, upgrade to Pro to continue.
How credits work
What counts as a credit
Each time you send a message to the AI and receive a response, one credit is used. This applies to both Ask mode and Agent mode. Canceling a response mid-stream still uses one credit.
Monthly credits (Pro)
Pro users get 200 messages per month. Your monthly credit allowance resets at the start of each billing cycle.
Top-up credits (Pro only)
When you run out of monthly credits, Pro users can purchase additional credit packs. Each $20 top-up adds 200 messages to your account. Top-up credits are used only after your monthly allowance is exhausted, and they never expire, even if you cancel your subscription.
Credit deduction order
- Monthly credits are used first
- When monthly credits are exhausted, top-up credits are used
- When both are exhausted, AI features are unavailable until you top up or the next billing cycle
Credit indicator
The IDE shows your remaining credits in the chat header. The indicator color reflects your balance:
- Green - Plenty of credits remaining
- Yellow - Running low
- Red - Very few or no credits left
AI model
All plans use Claude Sonnet by Anthropic, one of the most capable coding models available. It excels at complex multi-step tasks, understanding large codebases, and generating complete game systems. It supports extended thinking for thorough planning before generating code.
What's free (no credits needed)
These features work without any credits and are available on all plans, including Free:
- The IDE itself (code editing, file management, terminal, git)
- Unity and Godot project detection and analysis
- Unity and Godot Editor Bridge (live connection)
- Project Panel with scene/script/asset breakdown
- Theme switching (dark/light)
- All VS Code extensions and features
Billing
Subscription
Pro subscriptions are billed monthly via Stripe. You can upgrade, downgrade, or cancel from the dashboard at any time. When you cancel, you keep Pro access until the end of your current billing period.
Top-ups
Top-up purchases are one-time payments processed via Stripe Checkout. Credits are added to your account immediately after payment.
Authentication
Sign in with GitHub or Google. Your account is shared between the IDE and the website. Sign in once and your credits sync across both.
The IDE uses a secure OAuth flow:
- IDE opens your browser to the login page
- You sign in with GitHub or Google
- The browser redirects back to the IDE with a secure token
- The IDE stores the token and uses it for all API requests