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By default Foundry answers from the model’s training knowledge. Toggle on a Source and the model goes and looks something up first — then cites what it found under the reply. Type @ in the composer to open the Sources menu.
Sources menu open — Web Search, Reddit Search, Academic Search, GitHub Search, X Search, Prediction Markets, Schedule.

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Built-in sources

For Deep Research — the multi-step grounded answer — switch to that mode via / instead of toggling a single source. See Deep Research.

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How toggles work

Toggle one or more sources from the @ menu. Your next message is grounded in those sources; toggles reset when you switch chats. Foundry shows a Sources pill above the composer for every active source so you always know what your next prompt will hit.

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Citations

Every reply that used a source gets citations under the answer — clickable links to the source pages, with a short excerpt that the model leaned on.

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Tips

  • Stack sources for harder questions. Web + Reddit gives you both the facts and the lived experience.
  • Reset between chats. Sources don’t bleed across chats by design.
  • Use Deep Research when one round of search isn’t enough. It fans out, reads, and synthesizes.

Connectors

External services as sources — Exa, Firecrawl, Valyu, more.

Deep Research

The heavyweight option.