Opus 5.5 loves to tell you ‘this matters’ (and other AI writing tells)

September 28, 2026 · 4:04 pm 3 sources

Image: The New Stack

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• GPT-6 Sol vs. Claude Opus 5.5: Is cheaper important when results aren’t consistent?
  The New Stack · September 28, 2026 16:04
  OpenAI launched GPT-6 Sol on September 22, claiming it scores higher than Claude Opus 5 on business workflow tasks at The post GPT-6 Sol vs. Claude Opus 5.5: Is cheaper important when results aren’t consistent? appeared first on The New Stack .
• It’s not just you, Claude is down in confirmed partial outage [U]
  9to5Google · September 29, 2026 14:44
  Anthropic has confirmed an outage affecting multiple Claude services this morning. more…
• Claude Opus 5.5 vs. Fable 5.1: One overthinks, the other cuts corners
  The New Stack · September 29, 2026 15:00
  Anthropic released Claude Opus 5.5 on September 22, saying it performs at the level of Claude Fable 5.1 on most The post Claude Opus 5.5 vs. Fable 5.1: One overthinks, the other cuts corners appeared first on The New Stack .