What is the most effective ChatGPT Chrome extension?

AIPRM, it does have everything you need

FrugalGPT, Prompt Adaptation, LLM Approximation. We should use these ways to reduce the ChatGPT costs. I came across this detailed blog on How to reduce ChatGpt costs by 98% with prompt engineering on TechUp Labs website.

Grammarly for Chrome is a popular choice for enhancing ChatGPT's writing skills.

GPT-Enhancer is a Chrome extension that boosts ChatGPT's capabilities.

AI Writer for Chrome helps improve ChatGPT's writing quality.

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GPT Mastery is a comprehensive extension for improving ChatGPT's performance.

AI Writing Expert is a Chrome extension that elevates ChatGPT's writing skills.

I'm not using any. But thanks to your question, I learned about several such extensions that I'm going to check.