New Claude Models 'Marshmallow' and 'Melon' Spotted, Likely Opus Update

kimmonismus · x · 2026-08-24

Two new model IDs, claude-mashmallow-eap and claude-melon-eap, have been spotted in the system, suggesting an imminent release from Anthropic. Speculation points towards an update to Opus or possibly a new Haiku model. Reports indicate these are capable models rather than fiction-focused ones, with an official announcement expected potentially next week.

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