Extended Thinking
Three levels of AI reasoning power
Choose how deeply Claude thinks about your problems. From quick responses to exhaustive analysis, match Claude's thinking time to your task complexity.
Choose Your Thinking Mode
Different problems need different levels of analysis. Sonars gives you three thinking modes to match Claude's effort to your task.
Think
Quick but thoughtful responses. Claude takes a moment to consider the problem before answering.
- Code explanations
- Simple bug fixes
- Quick refactors
- Syntax questions
Mega Think
Extended reasoning for complex tasks. Claude explores multiple approaches and considers edge cases.
- Architecture decisions
- Complex debugging
- Multi-file refactoring
- Security reviews
Ultra Think
Exhaustive analysis for the hardest problems. Claude reasons deeply, considers all angles, and leaves no stone unturned.
- System design
- Critical bug hunts
- Performance optimization
- Major migrations
Watch Claude Think
See Claude's reasoning unfold in real-time. Understanding why Claude makes certain decisions helps you learn and validates the approach.
- Real-time thinking visualization
- See reasoning steps as they happen
- Understand trade-offs being considered
- Learn from Claude's problem-solving approach
Analyzing the authentication flow...
Checking for potential race conditions...
Considering session management approaches...
Evaluating JWT vs session tokens...
When to Level Up
Start with Think for most tasks. Escalate to Mega Think or Ultra Think when the problem demands deeper analysis.
Use Cases
System Design
Ultra Think explores every architectural option with detailed trade-offs.
Code Review
Mega Think catches subtle bugs and anti-patterns others miss.
Debugging
Ultra Think traces complex issues through multiple layers.
Learning
Think mode explains concepts clearly; Mega Think dives deeper.
Think Deeper
Download Sonars and unlock Claude's full reasoning capabilities.