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Open weights AI models trail proprietary models by 2-8 months, Artificial Analysis says

2 articles1 sourcesince Oct 29Last article 2h ago ·

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Artificial Analysis says each new highest open weights score since January 2025 has arrived 2-8 months after proprietary models first reached the same level.

DeepSeek V4.1 Flash 1017 now scores highest among open weights models at 324 on the firm's Progress Index, a level proprietary models first reached in June 2026.

The firm also says China has led the open weights rankings since September 2025. It reports that the US and China traded the lead seven times between July 2023 and September 2025, most recently when DeepSeek V3.1 Terminus passed OpenAI's gpt-oss-120b. Muse Spark Open, the highest-scoring US open weights model, scores 307.

Written by AI from the articles below · updated Oct 29, 12:54 PM ET

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Latest developmentOct 29, 12:49 PM ET
Open weights models trail proprietary models by 2-8 months

Developments

2 developments

  1. Oct 29, 12:49 PM ET · 1 article
    Open weights models trail proprietary models by 2-8 months
    Artificial Analysis: Open weights models trail proprietary models by 2-8 months
  2. Oct 29, 12:49 PM ET · 1 article
    Artificial Analysis says China leads open-weights models, with DeepSeek V4.1 Flash 1017 scoring 324
    Artificial Analysis: China has led open weights models since September 2025, per Artificial Analysis

Article timeline

The articles in this story. Times are ET.

Oct 29
  1. Artificial AnalysisOfficial
    Open weights models trail proprietary models by 2-8 months

    AIArtificial Analysis says each new highest open weights score since January 2025 has arrived 2-8 months after proprietary models first reached the same level. DeepSeek V4.1 Flash 1017 currently scores highest among open weights models at 324, a level proprietary models first reached in June 2026.

    Image from @ArtificialAnlys's post
  2. Artificial AnalysisOfficial
    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.

    Image from @ArtificialAnlys's post

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