**[GPT-6 Astra Completes *Portal* Solo, Costing $571]** Beating AI News Flash: Independent developer cozyblaze connected GPT-6 Astra to Valve's 3D puzzle game *Portal*. At the start, it was given only one instruction: play through the entire game to the end credits without looking up any guides online. Astra ultimately completed the game, taking approximately 23 hours and 43 minutes, consuming a total of about 435 million tokens, which translates to roughly $571 based on API pricing. Astra's approach to playing the game is quite different from that of a human. When it needs to think, the game pauses, allowing it to analyze the current screen, character position, and perspective. It then decides the next move, where to look, and where to place portals before resuming gameplay. During the process, OpenAI's service encountered capacity issues, which the developer manually resolved. Later, they switched to the faster "Fast" mode. However, public logs show that from the start to the end credits, the developer did not provide Astra with any additional gameplay hints. That said, this isn't a strict benchmark. *Portal* has been out for nearly 20 years, and there are abundant guides and videos available online. Even though the experiment prohibited Astra from actively accessing guides, it's impossible to rule out the possibility that relevant game knowledge was already included in its training data. What’s truly fascinating is that AI can now complete a nearly day-long task requiring continuous observation and interaction within a 3D environment. [Original Article Link]