# Empty shelves or lost keys? Recall is the bottleneck for parametric factuality

DevFeed: [Empty shelves or lost keys? Recall is the bottleneck for parametric factuality](<https://devfeed.tech/articles/empty-shelves-or-lost-keys-recall-is-the-bottleneck-for-parametric-factuality-6767.md>)

Original publisher: [Read original article](<https://research.google/blog/empty-shelves-or-lost-keys-recall-is-the-bottleneck-for-parametric-factuality/>)

Published: 2026-08-12T09:51:00Z

Content type: article

Language: en

Sources: [The latest research from Google](<https://devfeed.tech/sources/the-latest-research-from-google.md>)

Topics: [Google](<https://devfeed.tech/topics/google.md>), [LLM evaluation / benchmarking](<https://devfeed.tech/topics/llm-evaluation-benchmarking.md>), [Large Language Model](<https://devfeed.tech/topics/llm.md>), [Benchmark](<https://devfeed.tech/topics/benchmark.md>), [Hallucination detection](<https://devfeed.tech/topics/hallucination-detection.md>), [AI Inference](<https://devfeed.tech/topics/ai-inference.md>)

Tags: [benchmark](<https://devfeed.tech/tags/benchmark.md>), [classification](<https://devfeed.tech/tags/classification.md>), [errors](<https://devfeed.tech/tags/errors.md>), [generative-ai](<https://devfeed.tech/tags/generative-ai.md>), [google](<https://devfeed.tech/tags/google.md>), [inference](<https://devfeed.tech/tags/inference.md>), [large-language-models-llms](<https://devfeed.tech/tags/large-language-models-llms.md>), [natural-language-processing](<https://devfeed.tech/tags/natural-language-processing.md>), [post-training](<https://devfeed.tech/tags/post-training.md>), [research](<https://devfeed.tech/tags/research.md>)

## AI overview

This Google Research article argues that many factual errors in frontier large language models arise from recall failures rather than missing encoded knowledge. It presents knowledge profiling, which separates encoding, recall, and recognition, and introduces WikiProfile, a benchmark of 2,150 Wikipedia-derived facts tested through questions targeting these abilities.

## Source excerpt

Generative AI