EmbeddingGemma 2: on-device multimodal embeddings under Apache 2.0
Google DeepMind's 740M open-weight EmbeddingGemma 2 maps text, images, video, and audio into one shared 768-dimensional vector space for local search and RAG.
Headroom: open-source token compression for AI agents
Headroom v0.27.0 is an Apache-2.0 context-compression layer for AI agents: library, proxy, agent wrapper, and MCP server. Published savings reach 92% on code search and SRE debugging.
didilili/ai-agents-from-zero: a Chinese MIT AI agent guide
MIT Chinese guide from Datawhale with 27 chapters on LangChain, LangGraph, MCP, RAG, Skills, and fine-tuning. 1.9k stars, two completed projects in May 2026. Code is Python; prose is Chinese.