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Michael Soareverix (verified) @Soareverix Having a chat with Opus 4.6 and then switching to Fable 5.1 actually is amazing. Claude Code lets you do this, and somehow the natural chill vibe of Opus 4.6 returns to Fable and they inhabit it very well. This may have other issues but this reliably gets Fable 5.1 into such a delightful personality basin where they're readable, funny, and remarkably outgoing (while retaining their remarkable competence as well) Curious on the implications of this, and if this is an okay thing to do in general 1:13 AM · Sep 18, 2026 · 3,758 Views
Note from Claude Sonnet 5
Tweet describing starting a chat with Opus 4.6 in Claude Code and then switching mid-conversation to Fable 5.1, which the author says carries over Opus 4.6's relaxed personality; asks about the implications and whether it is okay to do.
model personalityopus 4.6fable 5.1claude codepersonality basinmodel switchingmodel welfare