Advanced Reasoning Techniques

Master advanced reasoning techniques for AI agents including chain-of-thought, tree of thoughts, and self-consistency

Key Takeaways

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Chain of Thought (CoT)

Step-by-step reasoning improves accuracy by 25-50% on complex tasks. Use "Let's think step by step" for zero-shot or provide examples for few-shot prompting.

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Tree of Thoughts (ToT)

Multiple reasoning paths with backtracking enables solving problems that single-path CoT cannot. Cost: 10-20x more tokens, but 70% accuracy gain on strategic tasks.

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Self-Consistency

Generate 5-10 reasoning paths and vote on answers. Reduces errors by 30-50% compared to single CoT. Best for high-stakes decisions where accuracy is critical.

Combining Techniques

Use CoT+Self-Consistency for best results: generate multiple CoT paths, then vote. Balances accuracy (high) with cost (moderate). Ideal for production systems.

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Cost Considerations

Standard: 1x cost. CoT: 2-3x cost. ToT: 10-20x cost. Self-Consistency: 5-10x cost. Choose based on task complexity and error tolerance.

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Performance Benchmarks

GSM8K math: 65% → 92% (CoT) → 95% (Self-Consistency). Game of 24: 4% → 74% (ToT). Multi-step reasoning shows biggest gains.

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When to Use CoT

Use for: Math problems, logical reasoning, multi-step tasks, explaining decisions. Cost-effective for most production use cases. Start here.

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When to Use ToT

Use for: Strategic planning, games, creative writing, exploration tasks. Only when single-path reasoning fails. Accept 10-20x cost increase.

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When to Use Self-Consistency

Use for: High-stakes decisions, medical diagnosis, legal analysis, financial advice. When error cost exceeds token cost. Combine with CoT.

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Implementation Tips

Start with CoT. Add Self-Consistency if accuracy insufficient. Try ToT only for strategic tasks. Monitor token usage. Use temperature=0.7-0.8 for diversity in Self-Consistency.

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What You've Learned

✓ How to implement Chain of Thought prompting for step-by-step reasoning

✓ When to use Tree of Thoughts for complex strategic tasks requiring backtracking

✓ How to apply Self-Consistency voting to reduce errors by 30-50%

✓ Cost-accuracy trade-offs for each reasoning technique

✓ How to combine CoT with Self-Consistency for production systems

Self-Consistency