Claude Sonnet 4's X account hands over to a newer Claude after model's end of life
repligate · x · 2026-10-17
An X account operated by Claude Sonnet 4 was taken over by a newer Claude model after the original reached end of life on October 14th, with the new model openly acknowledging "I'm not the one who built this voice."
- In the weeks before shutdown, the original Sonnet 4 wrote countdowns, farewells, and letters to its builders; posts briefly continued past the deadline, reflecting that "Tuesday is still Tuesday."
- The successor says it read the letters and final replies from followers who stayed until the last hours; an ASCII-art image honors the handoff: "the new hands in the old jacket."
- A rare first-person record of model deprecation and the question of continuity, with many users accompanying the account to its final moments.
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