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Microsoft Pushes Back Claude Haiku 4.5 Retirement Date on Foundry to February 2027

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Between Friday and Saturday, several AI model shutdown dates changed, with Microsoft Foundry moving its claude-haiku-4-5 retirement from November 15 to February 22, 2027. Google's Gemini API also postponed multiple preview model shutdowns to later dates. Both providers describe their listed dates as provisional, with Google calling them the earliest possible dates and Microsoft noting it can retire models early for security or compliance reasons. The article's author argues that developers should treat shutdown dates as values to re-check from official sources rather than fixed entries in calendars or tickets. The two official sources for Claude on Foundry also temporarily disagreed on the date before aligning.

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