SEO & Online Marketing

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• PProfound News2026-10-14✓ Read

  ChatGPT’s Missing UTM Tags: What Our Research Shows

  Profound’s analysis links missing ChatGPT UTM tags to the Intelligent UI rollout. Learn why reported referral traffic is falling and what to measure now.

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• PProfound News2026-10-13✓ Read

  What’s changed with Sonnet 5.5

  We analyzed 28,440 answers to understand what changed between Sonnet 5 and Sonnet 5.5. The newer model asks for context nearly five times as often and more frequently searches for current-year information. For marketers, the findings underline the value of keeping content current and explaining how a product fits specific customer needs.

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