The propagation lag by engine
Different AI engines update their knowledge on different cadences, which means changes you make to your website, schema, or Google Business Profile take different amounts of time to appear in each engine's recommendations.
Google AI Overviews
Google crawls your site continuously but re-evaluates structured data and entity signals on a rolling schedule. Most schema changes are reflected in Google's index within 1–4 weeks. AI Overviews are generated from this index, so changes made to your schema and About page today are typically visible in AI Overviews within 2–6 weeks.
GBP updates (category changes, description updates, new photos) can propagate into AI Overviews faster — sometimes within days for high-activity profiles.
Perplexity
Perplexity crawls the live web to source answers, which means it can reflect your content changes faster than engines that rely on training data. A new authority article can appear in Perplexity results within days to a couple of weeks of publication.
ChatGPT
ChatGPT's knowledge draws from both training data (which updates on a longer cycle) and Browse (which accesses live web content for specific queries). For entity-level information (who is your business, what do you do), changes propagate on a training cycle timeline — expect 4–12 weeks for significant entity changes to be reflected consistently.
Gemini
Gemini draws heavily from Google's knowledge graph, meaning its entity update cadence closely follows Google's. GBP and schema changes can appear relatively quickly; deep entity model changes take longer.
What you can control
You cannot force any engine to re-crawl your site immediately. What you can do:
- Submit updated pages to Google Search Console for indexing
- Verify your GBP changes are live within the platform
- Monitor your Search Console crawl activity to confirm your updates have been seen
- Use Perplexity to get the fastest read on whether your new content is being cited
