AI ToolsAug 18, 2026, 11:06 AM

COSP: The Prompting Trick Where Your LLM Grades Its Own Homework

30-second summary

A developer introduces COSP, a prompting technique that lets large language models evaluate their own responses for accuracy and quality.

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COSP: The Prompting Trick Where Your LLM Grades Its Own Homework
Key takeaways
  • COSP enables LLMs to self-evaluate their outputs by generating, critiquing, and refining responses in a structured loop.
  • The method could reduce hallucinations and improve response quality by leveraging the model's own feedback mechanisms.
  • Applications include automated code review, where LLMs might assess their generated code for correctness and efficiency.
  • Still experimental, COSP represents a move toward more autonomous AI systems with built-in self-validation.
Full story

A new prompting technique called COSP (Chain-of-Self-Prompting) has emerged, allowing large language models to evaluate their own responses with minimal human intervention. The method involves a structured sequence where the LLM first generates an answer, then critiques it against predefined criteria, and finally refines the output based on its own feedback. This approach aims to reduce hallucinations and improve response quality by leveraging the model's self-awareness without external tools or human oversight.

The technique was shared by developer Maneshwar in a recent post, highlighting its potential for applications like automated code review, where LLMs could self-assess their generated code snippets for correctness and efficiency. While still experimental, COSP represents a step toward more autonomous AI systems that can validate their own work, reducing the need for manual verification in certain workflows.

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Why this matters
Developers

Offers a new way to automate quality checks in AI-generated code and outputs, reducing manual review effort.

Everyone

Introduces a self-improving mechanism for AI that could enhance reliability in real-world applications.

Glossary
COSP
Chain-of-Self-Prompting, a technique where an LLM evaluates and refines its own outputs through a structured feedback loop.
Hallucination
In AI, the generation of incorrect or nonsensical information presented as fact.
Sources · 1
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