tech
December 28, 2025
This Prompt Optimizer Learns From Its Mistakes Like DNA
A new tool that 'evolves' your prompts may be the next step in getting LLMs to do precisely what you want
TL;DR
- GEPA uses genetic algorithms (mutation and selection) to optimize prompts.
- It achieved a 25% performance improvement with 35 times fewer trials.
- GEPA optimization led to a 44% quality improvement for Every's AI writing assistant.
- No-code tools like LangWatch and Opik are integrating GEPA.
- The technique has the potential to double prompt accuracy rapidly.
- The future of prompt engineering may involve less direct writing and more optimization.
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