GPT-6 Astra Finishes Portal for $571 After 3,336 Tool Calls
Updated
Updated · Tom's Hardware · Sep 7
GPT-6 Astra Finishes Portal for $571 After 3,336 Tool Calls
3 articles · Updated · Tom's Hardware · Sep 7
Summary
$571.18 in API usage and 3,336 tool calls let OpenAI's GPT-6 Astra autonomously complete Valve's Portal in an enthusiast-run test spanning about 24 hours.
MCP and a modified SourcePauseTool kept the game paused while Astra analyzed screenshots and player-position data, then unpaused to execute planned input sequences.
A trimmed highlights video runs about two hours because the model's thinking time was removed; the experimenter later said the cost was covered by a $200 Codex Pro subscription.
CozyBlaze said the run should not be treated as an AI benchmark, but called it a glimpse of OpenAI's 2016 goal of a single agent solving many kinds of games.
The result adds an early public showcase for GPT-6 Astra, which OpenAI made its flagship model this month and says leads on computer use and other professional tasks.