Claude Haiku 4.5 shows up with a glitch: 'Claude:' prefix repeated dozens of times

Sauers_ · x · 2026-10-13

A user shared a screenshot of Haiku 4.5 in action: the model is live, but the UI rendered the "Claude:" prefix repeatedly across dozens of lines, filling the whole window — an obvious frontend/streaming rendering bug. The post is one line; the substance is the glitch itself alongside the Haiku 4.5 sighting.

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