Tencent releases open-source Hy Memory 2.0, a dedicated model for AI agent memory

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Tencent Hunyuan released Hy Memory 2.0 on October 15, 2026, built around a model whose sole task is writing and updating memories for AI agents. The centerpiece, Hy-Memory-30B-A3B, is a mixture-of-experts model with about 30 billion total parameters, of which roughly 3 billion are active per token. The company says it was trained to decide what to retain and how to update stored facts, addressing the frequent failure of existing systems to return current information after facts change. Alongside the model weights, released under Apache 2.0, Tencent published a Python SDK and a local desktop app called MemHub, and reports benchmark results that are vendor-run and not independently replicated. Developers can test it as a drop-in replacement in frameworks such as Mem0 and MemOS, though the full-precision weights are about 60 GB.

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