Alibaba Cloud has released the Memory service on its Model Studio platform. This service is designed to create long-term memory in personal AI agents. According to a report from IT Home dated November 2, this functionality allows agents to remember user preferences, plans, and previous commitments across various dialogues. The system collects this history into a structured user profile that the agent can use subsequently.
Alibaba Cloud claims that its system leads in two public memory tests. In charts published at the launch, where the system is presented under the name Mementis, it ranked first across four HaluMem-medium factual memory metrics, including recall, precision, and F1 scores. Furthermore, the system scored 85.15% in question-answering tasks, surpassing the next system, Zep, which scored 81.71%. On the PersonaMem-v2 personalization benchmark, the system achieved an overall score of 56.82, the highest among eight compared systems and the best in seven out of nine tasks; MemBrain ranked second with a score of 55.72. Alibaba Cloud notes that data on other systems was obtained as part of the OmniMemEval assessment, and these figures were provided by the company itself and have not undergone independent verification.
The company provided an example where a capital management consultant can recall a client's risk appetite, goals, and past discussions. This ensures that subsequent recommendations remain consistent with what the user has already stated, rather than starting the process from scratch in every new session.
Developers have the ability to independently define memory retention rules and profile fields to control what information the agent should store. The console provides tools for debugging and tracking changes, allowing teams to see exactly how the memory was formed or updated. Access to Memory is available via API, as well as through MCP and a command-line tool that integrates with various agent environments such as Codex, DeepSeek Harness, Claude Code, and OpenClaw. Additionally, the service is compatible with Skills, enabling agents to combine stored context with pre-built functions.
This launch aligns with Alibaba's broader strategy for developing personal agents. At the CNCC event last month, Jiang Guanjun from Qwen described the concept of a personal agent framework based on three core elements: models, memory, and an ecosystem of capabilities.



