TRACE: open-source hierarchical memory for LLM agents, 82.5% on MemoryAgentBench’s EventQA using gpt-oss-20B [P]

Built a memory system called TRACE that organizes agent conversation history into a topic tree (branches + summaries) instead of flat RAG chunks, and benchmarked it on MemoryAgentBench (ICLR 2026), specifically the EventQA accurate-retrieval task. Its a pypi package: pip install trace-memory Results (F1): • TRACE (gpt-oss-20B): 82.5% • TRACE (gpt-oss-120B): 83.8% • Mem0 (GPT-4o-mini, paper’s official number): 37.5% •