Anthropic Opus 5.1 & Sonnet 5.1 Leaks: Marshmallow and Melon Could Be Next
Anthropic may already be testing its next-generation Claude models behind the scenes, and two unusual codenames are now drawing attention: “Marshmallow” and “Melon.” According to recent leaks, Anthropic is testing models internally identified as claude-marshmallow-eap and claude-melon-eap. While the names sound harmless, the performance gap between the two could offer an important clue about where […]

