AI driving sim demo's chatbot bills climb after player surge

The developer of Teach My Little Sister How to Drive says the demo's AI service costs have grown substantially as player numbers increased more than twentyfold. The article reports Easy Fox is spending over $1,000 per day on AI services for the demo. The game uses an LLM chatbot to let players converse with and instruct a virtual sibling while teaching her to drive.
The demo launched in February, and a recent spike in players — more than twenty times the previous level, roughly 450 concurrent users according to FRVR — drove up operating expenses. Easy Fox says the cost stems from volume rather than any single player being costly.
The studio has borrowed money to sustain the demo and warns it might shut the demo down sooner than planned, though no decision has been made. The final game is expected to use a Gemini model instead of OpenAI, and its price will factor in anticipated AI usage, with no separate token charges for buyers.
The cost pressures described here could shape how smaller studios approach AI-driven characters, since ongoing token expenses may make free demos and long-term support harder to sustain. Players might see fewer such features, or higher prices, if developers pass costs along. It may also influence how the industry judges LLM-powered NPCs — not only by their novelty, but by whether they can remain affordable at scale.