Daily AI Research Briefing — April 7, 2026
Memory architectures for long-horizon agents. External knowledge systems and retrieval-augmented generation advances.
🧠 Beyond Context Windows
Microsoft Research unveils MemGPT for agents—tiered memory systems with working, episodic, and semantic stores. Agents can now maintain coherent state across thousands of interactions.
📚 RAG Evolution
- GraphRAG v2: Knowledge graphs for multi-hop reasoning
- Adaptive retrieval: Dynamic context window sizing
- Memory hierarchies: Hot/warm/cold storage tiers
🔨 GitHub Trending
- agent-memory: Persistent agent state management
- memgraph-llm: Graph-native memory for agents
- context-compressor: Intelligent token reduction
🚀 Model Releases
Cohere releases Command-R with 128K context and native RAG. Embedding model achieves SOTA on long-document retrieval benchmarks.
💡 Lab Takeaway
Context windows are RAM; external memory is disk. Smart caching policies and retrieval strategies matter more than raw context size.