← Back to People
Federico Barbero is a Research Scientist at Google DeepMind working on understanding and improving LLMs from first principles.
1
Mentions
1
Articles
1
Outlets
Associated Topics
Coverage Patterns
How media typically covers Federico Barbero
Article Types
- research1
Media Angles
- technical1
Narrative Framing
- cautionary1
Associated AI Models
Transformer1
Articles
Most recent firstMentioned In
Referenced in coverage
Perplexity Cannot Always Tell Right From Wrong
arXivresearchcautiousFeb 4, 2026
Perplexity is an unsuitable metric for model selection because models with low perplexity can make incorrect predictions, and perplexity does not always favor more accurate models over less accurate ones.
“Co-author of research on perplexity limitations showing that increased model confidence must be accompanied by commensurate accuracy gains.”
AI ResearchFoundation ModelsAI SafetyNLP