This study delves into the integration of AI-generated mnemonic assistance in Anki flashcards, aiming to enhance vocabulary acquisition for intermediate-level English language learners who often grapple with vocabulary challenges. The research involved a sample of 60 students, split into two groups: the Mnemonic group, which used Anki flashcards with AI-generated mnemonics, and the Non-Mnemonic group, which relied on Anki flashcards without mnemonics. The findings revealed that both groups exhibited statistically significant vocabulary retention improvements after undergoing four repetition sessions. Significantly, the Mnemonic group displayed a more pronounced enhancement, underscoring the effectiveness of AI-generated mnemonic support. This research amalgamates insights from cognitive psychology, spaced repetition techniques, and AI-driven personalization to offer a comprehensive and adaptive approach to vocabulary acquisition. Its implications extend to educators, learners, and the ongoing evolution of language instruction, as it highlights the potential for AI to play a pivotal role in addressing the persistent challenges associated with vocabulary acquisition, especially among intermediate-level English language learners.