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China has led open weights models since September 2025, per Artificial Analysis

AIArtificial Analysis says China has led the open weights model rankings since September 2025, after the US and China traded the lead seven times between July 2023 and September 2025. It says DeepSeek V4.1 Flash 1017 scores 324 on its Progress Index, ahead of Muse Spark Open at 307, the highest-scoring US open weights model.
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Among open weights models, China has led since September 2025. The US and China traded the lead seven times between July 2023 and September 2025, most recently when DeepSeek V3.1 Terminus passed gpt-oss-120b.

DeepSeek V4.1 Flash 1017 now scores 324, ahead of the highest-scoring US open weights model, Muse Spark Open, at 307.

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Artificial Analysis · x.comPublished

Original title: Among open weights models, China has led since September 2025. The US and China traded the lead seven times between July 2023 and Septemb...

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DeepSeekOpen-source ecosystemChina AIEvals & benchmarks