Anthropic Reveals Two Claude Models, Marshmallow Offers Better Conversational Experience than Opus 5

Developers have discovered two early access Claude models from Anthropic, codenamed claude-marshmallow-eap and claude-melon-eap. Tester feedback indicates that Marshmallow performs overall better than Melon, but neither has reached the level of Fable 5. Additionally, some testers reported that Marshmallow's conversational experience surpasses that of Opus 5. Previously, Anthropic has named early models using a "food name + EAP" convention. In early July, Claude Honeycomb EAP briefly appeared on Cursor before being removed; on July 24, Anthropic officially released Opus 5, but the company has not confirmed a direct relationship between Honeycomb and Opus 5.

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