Kimi K2.5 Released: Trillion-Parameter MoE Trained on 15T Mixed Visual-Text Tokens

Moonshot AI officially released Kimi K2.5 on January 27, 2026: built on the trillion-parameter MoE architecture and trained on 15 trillion mixed visual and text tokens, with clear gains over K2 in multimodal understanding and agentic tasks.

Since K2 debuted in July 2025 as the world's largest open model, Moonshot has kept a six-month cadence — K2.6 followed in April 2026. China's open-source trio — DeepSeek, Qwen and Kimi — now rotate steadily at the front of the open-model pack.

For developers, K2.5 remains open and commercially usable, deployable via the Kimi open platform and mainstream inference frameworks.