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    <loc>https://twarx.com/research/anthropic-s1-ipo-ant-vendor-risk-claude-integrations</loc>
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      <news:publication_date>2026-10-27T05:57:52.247Z</news:publication_date>
      <news:title>Anthropic&apos;s S-1 Is a Vendor-Risk Document: What the ANT IPO Filing Means If You Build on Claude</news:title>
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    <loc>https://twarx.com/research/agentic-ai-foundation-open-responses-agent-portability</loc>
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      <news:publication>
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      <news:publication_date>2026-10-27T05:42:41.170Z</news:publication_date>
      <news:title>Open Responses Went Neutral. Your Agent Stack Still Won&apos;t Port</news:title>
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