By name: extended-thinking description: Deep reasoning with Claude's extended thinking feature for complex multi-step problems. Use when implementing think-aloud reasoning, complex analysis, or debugging difficult issues.
Extended Thinking Skill
Enable Claude to "think out loud" before responding - dramatically improves complex reasoning tasks.
When to Use Extended Thinking
- Complex math, logic, or coding problems
- Multi-step analysis requiring careful reasoning
- Tasks where you need to verify Claude's thought process
- Debugging intricate issues
- Strategic planning and decision-making
Budget Guidance
| Complexity | Budget Tokens | Use Case |
|---|---|---|
| Simple | 1,024 | Quick verification |
| Medium | 4,000-8,000 | Standard analysis |
| Complex | 16,000+ | Deep reasoning |
| Very Complex | 32,000+ | Consider batch processing |
Key Patterns
Basic Extended Thinking
See templates/basic-thinking.ts and templates/basic-thinking.py
Interleaved Thinking with Tools
Requires beta header: anthropic-beta: interleaved-thinking-2025-05-14
Streaming Extended Thinking
Stream thinking blocks for real-time visibility into reasoning process.