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Ant Group Launches World’s First Open-Source Trillion-Parameter Reasoning Model

Sep 29, 2025, 10:24 p.m. ET

AsianFin -- Ant Group has unveiled its first trillion-parameter AI model, Ring-1T-preview, on Hugging Face, marking the world’s first open-source reasoning model at this scale.

The model posted standout results in benchmarks, scoring 92.6 on AIME 25—beating all known open-source systems and Google’s Gemini 2.5 Pro, and approaching GPT-5’s 94.6 (without tools). On CodeForces, it scored 94.69, surpassing GPT-5, and topped leaderboards such as LiveCodeBench and ARC-AGI-v1.

Built on the Ling-2.0 MoE architecture and trained on 20T tokens, Ring-1T leverages Ant’s icepop method and its self-developed RLVR system ASystem, with parts like AReaL already open-sourced. The model remains under training. 

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