Ant Group Releases Open-Source Trillion-Parameter AI Model

September 30, 2025
Ant Group has open-sourced Ring-1T-preview, a trillion-parameter AI model, achieving state-of-the-art results in reasoning and code generation benchmarks.

Ant Group has announced the open-source release of Ring-1T-preview, a trillion-parameter natural language reasoning model. This model is the first of its scale to be open-sourced and is designed to excel in reasoning and code generation tasks.

Ring-1T-preview has demonstrated impressive performance across various benchmarks. It scored 92.6 on the AIME-25 test, surpassing all known open models and closely approaching the performance of GPT-5. On the Codeforces benchmark, it achieved a score of 94.69, exceeding GPT-5's performance. Additionally, the model ranked first among open models on LiveCodeBench and ARC-AGI-v1.

The model is built on Ant's Ling 2.0 trillion-parameter foundation and is optimized for long-horizon problem solving rather than general chat. The source code and model artifacts have been made available to the public, marking a significant milestone in AI accessibility and innovation.

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