[Two Mysterious Claude Models from Anthropic Revealed, Marshmallow Said to Offer Better Conversation Experience Than Opus 5] Odaily Planet Daily News: Developers have discovered two early-access Claude models from Anthropic, codenamed claude-marshmallow-eap and claude-melon-eap. According to testers, Marshmallow performs better overall than Melon, but neither has yet reached the level of Fable 5. Other testers have noted that Marshmallow provides a better conversational experience than Opus 5. Previously, Anthropic has repeatedly named early models using the format 'food name + EAP.' In early July, Claude Honeycomb EAP briefly appeared on Cursor before being withdrawn; on July 24, Anthropic officially released Opus 5, but the company has never confirmed a direct correlation between Honeycomb and Opus 5.