> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bigdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Source Questions

<AccordionGroup>
  <Accordion title="What are the sources used by Bigdata?">
    Sources include thousands of websites such as news outlets, research hubs, and corporate sites, along with premium content from leading providers. To request a list of available premium sources, please contact [support@bigdata.com](mailto:support@bigdata.com).
  </Accordion>

  <Accordion title="What is source retention?">
    Bigdata doesn't add sources as such, but rather the content that comes from the source. If a source has an article with a publication date of July 8, 2024, and we have a 1 year retention for that source, then we will retain that article until July 8, 2025.
  </Accordion>

  <Accordion title="Do we get the newest data feed (i.e. most up to date news)/ how often is the update schedule intraday?">
    Bigdata consumes real-time information. This means we are indexing in real-time and making new information available for use in our chat (and SDK) experience immediately.
  </Accordion>
</AccordionGroup>