GPT Credits
To use generative AI, you will need GPT Credits active on your account. Everyone receives 250 free credits each month for the free tier. Credits are designed to be scalable and affordable relative to the game they are in. You can calculate how many credits you will likely need using the calculator and purchase from Stripe when ready to check out.
Credit Use Details:
Text Generations: Uses 1 credit per generation, everytime a player generates text it uses 1 credit regardless of how long the text generation is.
Voice generations: Uses 3 credits per generation, everytime a player generates voice dialogue, it uses 3 credits, regardless of how long the voice generation is.
Translations: Uses 0.2 credits per generation, You can combine both prebaked translations and runtime translations or use just one of them.
Speech to Text: Uses 2 Credits per call, This operates off of the whisper AI model from Open AI.
Subtitles: This is completely free and runs offline, you do not need to pay for this feature.
Dialogue Context Generation: This uses 3 Credits per generation, it operates on the latest GPT mini model for free tier users and the larger, more advanced GPT 5 for the Indie and Pro Users.
Fallback Option: GPT Tools has a offline fallback if you run out of credits so your game continues to work for all players, this also kicks in if a generation fails or the player is offline. I recommend supporting the fallback option for your project in case you decide to stop buying credits and want it to work offline. You can deliver a patch that mandates the offline fallback for all dialogue generation nodes/functions in your project if you are ending the life of a game and want to have permanant offline mode. This fallback does not use a local LLM, it is prebaked.
Step 1: How to access the Credit purchasing widget
In the editor toolbar look for "GPT DIalogue" and click the button to get a dropdown of options.
Click the Purchase GPT Credits option.
If it does not auto-pop up it may be minimized, open the windows taskbar to find it.
If the text boxes or buttons are too small, you can resize them like a normal window.
Step 3: Purchasing Credits once you go past the free tier
Once you have used your free tier, you can upgrade to either Indie or Professional tiers, Indie comes with 7500 credits per month and Professional comes with 50,000 Credits per month.
You can cancel through the stripe customer portal at any time.
GPT Credits can be used across projects as long as you use the same account.
When you click "Checkout with Stripe" a web page to stripes checkout portal will open, upon successful payment, the credits will automatically show up in your account. once payment is successful, you can return to the editor and click the "Refresh Credit Balance" button to see them in your account.
Please contact support on Discord or email if you have issues with payment processing.
Optional: Force the global offline fallback for end of life games.
if your game is ending its lifespan and you want to stop supporting it, you can mandate the fallback be used everywhere the generation functions are in one click.
Open the purchasing page and resize the window to be fullscreen. You should see a checkbox that says "Mandate Global Offline fallback" click that to true and your game will now use the fallback option everywhere.
Alternatively you can mandate the global fallback in game by using the GPT Dialogue Subsystem and its "Mandate Offline Fallback" node.
You can also use this node in free games behind a DLC paywall where if the DLC is owned this fallback is false and if its not owned it is true, so you can scale your game without incurring large costs.
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