/deepthinkForces Claude to reason through every layer before answering. Shows the work.
Category: Thinking & Reasoning
Before / After
Why is my React component re-rendering?
/deepthink Why is my React component re-rendering?
What changes in Claude's response
Without /deepthink, Claude pattern-matches your question to the most common cause and answers that. With it, Claude walks through state, props, parent re-renders, context changes, ref instability, and key prop issues — then tells you which one is most likely given your specific code. The answer is 3x longer but you actually get the *real* cause instead of the textbook one.
When NOT to use /deepthink
Skip it for trivial questions ('how do I center a div'). /deepthink turns 30-second answers into 3-minute ones for no reason.
Codes that stack with /deepthink
/deepthink is one of 120 tested prompt prefixes. The full cheat sheet has before/after examples, warnings, combos, and 10 workflow playbooks.
See the full cheat sheet — from $5More Thinking & Reasoning codes
L99Pushes Claude to maximum reasoning depth. Less hedging, more opinion, longer answers.
OODAObserve → Orient → Decide → Act. Best for time-pressured operational decisions.
CHAINLOGICShows each reasoning step explicitly so you can verify the logic, not just the conclusion.
/blindspotsAsks Claude to find what you're missing or assuming, not what you're asking.
OVERTHINKDeliberately over-analyzes to surface details you'd normally skip past.