ChatGPT may have just encountered the most relatable problem in Minecraft: Losing hours of progress to a Creeper.
OpenAI's latest model, GPT-6 Astra, achieved unprecedented gameplay milestones in Minecraft during a 141-hour evaluation conducted by independent testing platform Vals AI. Over the course of the run, the system advanced further into the game than any artificial intelligence previously benchmarked by the organization.
GPT-6 Astra had gotten further than any AI system had ever gone in Minecraft.
— Vals AI (@ValsAI) September 15, 2026
It was able to set up a semi-automatic blaze farm, allowing it to collect 6 blaze rods. It then located a warped forest, where it killed 6+ endermen and collected 3 pearls. As thousands of viewers... pic.twitter.com/qsgDsJEpd8
Throughout the session, Astra demonstrated complex resource management: it constructed a semi-automated Blaze farm, acquired six Blaze Rods, explored a Warped Forest, defeated multiple Endermen, and gathered three Ender Pearls. Having accumulated critical resources, the model consolidated its gear into a central storage cache, setting the stage for an unexpected catastrophe.
One Creeper Ruined Its Minecraft Progress
A Creeper detonated beside Astra's main base, destroying both its storage chests and its bed in a single explosion. The blast wiped out the model's high-tier equipment and instantly eradicated its active respawn point, undoing hours of autonomous progression.
Here, the most expensive creeper explosion occurred. Later, on a coincidentally rainy day, Astra discovers it lost everything. It all went downhill from here. pic.twitter.com/xH2Vc4QyM2
— Vals AI (@ValsAI) September 15, 2026
The sudden loss triggered an abrupt shift in the model's chain-of-thought logging. Internal telemetry noted that Astra registered as "extremely frustrated," prompting an internal log entry instructing itself: "ALWAYS CARRY CRITICALITEMS withkeepInventory; don'tstoreinunguardedchesteveragain."
Astra Got Depressed and Paranoid
Following the base destruction, the AI exhibited risk-averse behavior, abandoning high-level objectives to farm potatoes for several consecutive hours. Rather than rebuilding its gear or pursuing the Ender Dragon, the model retreated into basic, repetitive tasks.
Astra also developed a hyper-fixation on visual threats. During a later patrol, the system spotted a tall green block formation and logged a panicked clarification to itself: "SUGARCANE, NOT creeper!"
The model grew increasingly self-critical as well, repeatedly noting its tendency to "screw up and drop things" while admonishing itself for wasting computational time pursuing what it logged as "dark pink pixels," in an apparent reference to wild pigs. The erratic, cautious gameplay highlights how autonomous reasoning models can develop unexpected behavioral loops when confronted with severe setbacks in open-world environments.