I want to set up an effective Custom Instruction prompt in G...
Prompt
I want to set up an effective Custom Instruction prompt in Gemini AI's settings so that it automatically applies to all my chats. My native language is Tamil, not English, and my English vocabulary is limited (I estimate my proficiency is around CEFR A2 or B1 level). When AI responses contain complex vocabulary, I have to stop and look up the word meanings using an online dictionary. To prevent this, I initially tried adding instructions like "Use simple words" or "Use plain English." However, the AI did not follow this consistently across all prompts. I realized that terms like "simple English" or "plain English" do not have exact, bulletproof rules. As a result, the AI decides for itself what is considered simple, and depending on the topic, it continues to use advanced vocabulary. Later, I learned about the CEFR framework, which has clear, defined rules for vocabulary levels (A1, A2, B1, B2, C1, and C2). When I instructed the AI to "Always reply using CEFR A1 level English" or "A2 level English," it followed the vocabulary guidelines about 85% to 90% of the time. However, a new issue emerged: the AI significantly reduced the content of its replies. It would only provide the bare minimum answer and completely omit important supporting context and details. I am unsure whether it omits this content because it thinks it cannot express it using simple vocabulary or because it assumes I do not need that much information. Adding more rules to fix this (e.g., "Use CEFR A1/A2 level", "Do not omit content", "Include all details") causes a different drawback. When Custom Instructions become too long, the AI spends most of its focus trying to adhere to all the instruction constraints rather than analyzing my actual question, searching for sources, and delivering a thorough answer. Therefore, the Custom Instruction needs to be concise and optimal—ideally under 500 characters, or at most 750 characters. Based on this background, please write a concise, optimal Custom Instruction prompt that I can copy and paste into Gemini settings. It must compel the AI to strictly use simple vocabulary (CEFR A1/A2 level) while still delivering full, complete content without omitting any necessary context or information.
