OpenAI GPT-6 Astra Agent Beats Portal, Costs $570

A developer known as Cozyblaze used OpenAI's GPT-6 Astra model to autonomously complete the video game Portal, a task involving 3D spatial reasoning, puzzle solving, and multi-step planning. The AI agent was connected to a modified version of the game via the Model Context Protocol. Over 24 hours, the agent processed screenshots and positional data, pausing to plan each action. The experiment required over 3,300 tool calls and incurred API costs exceeding $570. The developer noted this aligns with OpenAI's initial vision of a single agent mastering many games, although it is not a formal benchmark. Potential reliance on publicly available solutions or training data is acknowledged.