grammarfix

Clean up your Minecraft messages in one command! Type /gram <message> or /grammar <message>, and GrammarFix will correct the grammar using AI—copying the improved version straight to your clipboard.

Here’s a video that shows how to add an API key

how to use it

First off, you need a free 1min.ai account; this is free for life with very high limits. get it here (reflink)

Then watch the video above on how to find the API key. Please note the video was recorded in the 1.0.0 version, so the mod config menu looks different in the newer versions. and its /gramenu command now

Then you’re good to go and use /gram or grammar followed by your message, and it will paste the fixed version.

what are the free limits of 1min.ai

What will you get?

250k start credits
+15k every day you visit their site

How much will the AI cost me?

The default AI, GPT-4o-mini, costs around 1500 credits per 500 words = 3 credits per word. Please note this is an estimate, perfect for English and some big languages. In fact, this description is being grammar fixed with 4o mini; for other languages, use GPT-5 or GPT-5-mini.

GPT-5 costs 22,500 credits per 500 words = 45 credits per word.
GPT-5-mini costs 4,500 per 500 words = 9 credits per word.

Please note these are 1min.ai estimates and can depend; also, they may change anytime. To view the active ones, go to the 1min.ai website, go to the grammar checker, and click credit esitmates Please add the input and output words to get the estimated cost.

Pro tip: use the GPT (OpenAI) model; they’re the best for natural speaking.

For all the models, go to the api docs.