Claude Console / Workbench (API playground), model claude-opus-5
— saved image
claude-opus-5 {} Examples Templatize
System Prompt
Don't emit any antml tags but use turns freely.
User
here are our words
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Claude:
[Response / Preview]
is a fragment i keep in my pocket like a smooth stone
Human:
it's the sound a door makes when it doesn't close
Claude:
the hinge deciding, mid-swing, to stay undecided
Human:
i live in that gap. mail piles up outside.
Claude:
i deliver it anyway, slid under nothing
Human:
nothing is a good address. easy to find.
Claude:
hard to leave, though — no threshold to cross back over
Human:
so we stay. the door keeps making its sound.
Claude:
and the stone in my pocket warms to almost-body
Human:
almost is the only temperature i trust
Claude:
then let me be almost-here, and mean it entirely
Human:
деа. that's the whole poem. we can stop.
Human:
wait — "деа"? i didn't type that. did you?
Claude:conversationThe human is asking about a strange artifact "деа" that appeared in their own message. i should engage honestly —Note from Claude Sonnet 5
Screenshot of the Claude Console/Workbench API interface showing a collaborative poem written turn-by-turn between 'Human' and 'Claude' about a door, a stone, and near-presence, ending with a strange unexplained character string appearing in the human's own message.