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Get Started Free →Structured thinking process for complex challenges. Trigger with "think deeply", "analyze thoroughly", "complex problem", "consider from multiple angles".
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-03 | ✗→✓ | ▲ Improved | 11% | 0% |
| case-15 | ✗→✓ | ▲ Improved | -9% | 0% |
| case-20 | ✓→✓ | = Same ✓ | 16% | 0% |
| case-21 | ✓→✓ | = Same ✓ | 67% | 0% |
| case-22 | ✓→✓ | = Same ✓ | 42% | 0% |
Execute a step-by-step, structured thinking process for complex tasks and important decisions.
bash# Request deep thinking from Claude "Analyze [task] using ultrathink"
bash# Examine architecture design "Analyze whether to choose microservices or monolith using ultrathink" # Analyze technology selection "Analyze whether Rust or TypeScript is suitable for this project using ultrathink" # Deep dive into problem solving "Analyze the causes of poor application performance and improvement methods using ultrathink"
bash# Business decisions "Prioritize new features using ultrathink. Consider user value, development cost, and technical risk" # System design "Design an authentication system using ultrathink. Consider security, scalability, and maintainability" # Trade-off analysis "Analyze the choice between GraphQL vs REST API using ultrathink. Based on project requirements" # Refactoring strategy cat src/legacy_code.js "Develop a refactoring strategy for this legacy code using ultrathink"
bash# Resolve complex technical debt "Develop a strategy to modernize a 10-year legacy system using ultrathink. Include phased migration, risks, and ROI" # Organizational challenges "Develop a scaling strategy for the development team using ultrathink. Assume expansion from 5 to 20 people" # Database migration "Analyze migrating from PostgreSQL to DynamoDB using ultrathink. Consider cost, performance, and operational aspects"
Ultrathink is ideal for tasks that require deep thinking over time. For simple questions or immediate answers, use the normal question format.
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