Structured Memory Helps Agents Win Games

The Decoder · rss · 2026-07-12

The Decoder reported on an AI agent memory management study: researchers replaced ever-expanding chat logs with a 5-layer structured memory, allowing agents to avoid stuffing their entire history into the prompt during long tasks.

They tested this AgenticSTS approach on Slay the Spire 2. Results showed that prompt length remained stable at around 5,000 tokens instead of ballooning to over 500,000 tokens. Out of 10 test games, the agent using structured memory won 6 games, while the control group won none.

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