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AI agents win at Slay the Spire 2 after researchers replace growing chat logs with structured memory

Via The Decoder
Sunday, Jul 12, 2026 ยท 7:45AM
Summary

The AgenticSTS project replaces the ever-growing chat log of AI agents with five separate memory layers. Tested on the card game Slay the Spire 2, the prompt stays at around 5,000 tokens instead of ballooning past 500,000. The agent wins 6 out of 10 games, while competing agents don't win any. The a

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