What Is the War Room?
War Room vs Lab
The Mathematics Lab and the War Room are two modes of the same environment:
Lab mode is general-purpose mathematical research. You select a tier (Haiku, Sonnet, or Opus), start a session, and work through rounds. No corpus access. Each session is independent.
War Room mode adds the corpus system — a curated library of mathematical documents, prior research results, and contextual material that the AI can reference during your session. This transforms the interaction from a standalone conversation into a research investigation with memory and depth.
The corpus
The corpus is a document retrieval system. Before or during a session, you can load documents into the corpus — papers, prior session results, definitions, theorems, or any reference material relevant to your current investigation. The AI can then search and reference this material during the session, grounding its analysis in your specific research context rather than relying solely on its training data.
This is particularly powerful for multi-session research programs. Results from Session 1 can be loaded into the corpus for Session 2, creating continuity across sessions that would not exist in a standard AI conversation.
Access
The War Room is a Pro-only feature. It requires the Opus tier, which is the highest-capability (and highest-cost) AI model available. The cost per round is displayed transparently throughout the session.