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Reflexion / Self-Refine
Critique → improve loop. 15-30% quality boost in one turn.
3 hours2 resources1 prereqs
- Produce initial output
- Ask "Critique this output: errors, weaknesses, gaps?"
- Regenerate with the critique attached
Practical: Excellent for code, academic text, legal docs — anywhere 'correctness matters'. Cost is 2-3× but quality jumps.
Reflexion is the upgraded variant — maintains 'episodic memory' of past errors so it doesn't repeat them.