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OpenAI's new GPT-6.1 Sol undercuts its own Astra flagship

OpenAI on Tuesday launched GPT-6.1 Sol, the newest version of its workhorse model, only a week after launching GPT-6 Sol. The post OpenAI's new GPT-6.1 Sol undercuts its own Astra flagship appeared first on The New Stack .

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Timeline · 2 reports

  1. 2026-09-29 17:26 · AlphaSignal
    OpenAI's GPT-6.1 Sol Matches Flagship Performance at One-Fifth the Cost
  2. 2026-09-29 17:15 · The New Stack AI
    OpenAI's new GPT-6.1 Sol undercuts its own Astra flagship

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