You set Perplexity to Academic focus, then add a source filter like site:edu or site:nih.gov, but the results still include non-academic websites. This happens because Perplexity treats the focus mode and the source filter as separate query layers rather than combining them. The Academic focus mode selects a specific model and search domain, while the … Read more
You set Perplexity to Academic Focus to get research papers and scholarly sources, but the search returns general web results instead. This happens when the focus setting does not apply correctly to your query or when the search mode reverts to a default. This article explains why Academic Focus fails and provides the exact steps … Read more
You switched Perplexity to YouTube Focus to get a summary of a long video, but the tool returns an error, a blank response, or an incomplete text. This failure usually happens because the YouTube video lacks a transcript, uses an unsupported format, or the Focus setting is applied incorrectly. Perplexity relies on the video transcript … Read more
When you switch Perplexity to Writing Focus mode, the web search feature becomes unavailable. This behavior confuses many users who expect to search the internet while composing text. The reason is that Writing Focus is designed for local content creation, not for retrieving live data from the web. This article explains the technical design choice … Read more
When you need Perplexity to solve a calculus problem, simplify an algebraic expression, or generate a LaTeX formula, the standard search mode may return plain text or incomplete math notation. The Math Focus mode forces the AI to process your query using mathematical reasoning and to output results in LaTeX syntax. This article explains how … Read more
When you switch Perplexity to Math Focus mode and type a math problem, you expect a step-by-step solution. Instead, you see a red error message that says “Cannot compute.” This failure happens because Math Focus relies on specific computational models that may not load correctly in certain browser or account conditions. The error is not … Read more
When you search for research papers, news articles, or educational content in Perplexity, the results often include blog posts, opinion pieces, and non-reviewed sources. This makes it hard to find verified, peer-reviewed information quickly. Perplexity offers a built-in feature called Focus that lets you restrict search results to academic sources only. This article explains how … Read more
You ask Perplexity a research question with Academic Focus enabled. The answer arrives with a citation that looks like a peer-reviewed journal article. But the link leads to a preprint server such as arXiv, bioRxiv, or SSRN. This happens because Perplexity’s Academic Focus mode prioritizes speed and breadth over publication status. The system does not … Read more
You are in the middle of a Perplexity conversation thread and realize the answers would be more accurate if you switched from the Web focus to Academic or Writing. Changing the focus mode mid-thread usually clears the thread or resets the context, forcing you to repeat your questions. This happens because Perplexity treats the focus … Read more
When you use Perplexity on a mobile device, the Focus selector may disappear from the search bar. This selector lets you restrict answers to sources like Academic, Writing, Math, or Video. Without it, you get general web results that may include irrelevant or low-quality content. The issue occurs because the Perplexity mobile app hides the … Read more