MUM (Multitask Unified Model)
MUM (Multitask Unified Model) is Google's advanced AI model announced in 2021, designed to be 1,000 times more powerful than BERT. MUM can understand and generate language across 75+ languages simultaneously, process text and images together (multimodal understanding), and handle complex, multi-step queries that would previously require multiple separate searches.
MUM enables Google to understand nuanced, cross-lingual, and multi-format queries — for example, a question asked with both a photo and text, or a multi-part planning question that requires synthesizing information across many sources. Its capabilities underpin several of Google's AI search features and inform how Google evaluates comprehensive topical authority.
Why it matters for SEO
MUM represents Google's capability to understand complex, multi-dimensional user needs that span topics, languages, and media formats. Content strategies that address comprehensive topical depth and anticipate the multiple sub-questions involved in complex user journeys are best positioned to align with how MUM interprets relevance.
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