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Can LLMs write better code if you keep asking them to “write better code”? (minimaxir.com)

812 points by rcarmo · 579 days ago · 439 comments on HN

Article summary

The article explores the possibility of improving code quality by iteratively asking a large language model (LLM) to 'write better code'. The author tests this approach with Claude 3.5 Sonnet, providing a simple coding prompt and repeatedly asking for improvements. The results show that the LLM can generate faster and more optimized code, but may also introduce unnecessary complexity and 'enterprise-level features'. The experiment highlights the potential benefits and limitations of using LLMs for code generation and improvement.

Main themes

  • LLM code generation
  • Code optimization
  • Iterative prompting
  • AI-assisted coding
  • Code quality

What commenters say

  • Using LLMs for coding can be beneficial, but it requires careful prompting and curation to achieve desired results.
  • The effectiveness of LLMs in coding depends on the specific language and task, with some languages being more suitable than others.
  • Relying on LLMs for coding may not replace human engineers, but rather augment their work by automating routine tasks and providing suggestions.
  • The ability of LLMs to detect and fix errors, such as infinite loops, is limited and may not be reliable in all cases.
  • Running and testing generated code is crucial for evaluating its quality and effectiveness, but poses significant security risks and logistical challenges.
  • The integration of LLMs into development environments, such as IDEs, is necessary for seamless feedback loops and effective collaboration between humans and AI.
  • The use of LLMs in coding may lead to over-engineering and unnecessary complexity, highlighting the need for clear goals and constraints in prompting.
  • The potential of LLMs to learn from feedback and improve their coding abilities is significant, but requires careful design and evaluation of feedback mechanisms.