New In-Memory Database Purpose-Built for AI Agents by NEO4J

Neo4j released Relate, an open source (Apache 2.0), in-memory, in-process embedded database built in Rust for AI agents and agentic systems, which installs quickly and starts in milliseconds. It offers built-in MCP server connectivity, a CLI, Bolt and HTTP Query API v2 endpoints, sub-millisecond in-memory reads, and is 100% openCypher and more than 97% GQL compliant. Relate is available at https://relatedb.ai.