How to Create an AI Agent in ChatGPT to Proofread PPT Fast

If you’re like me, you spend a fair amount of time creating PowerPoint presentations for internal and customer meetings. Tools like ChatGPT can significantly improve their quality. This article explains how to create an AI agent using GPTs in OpenAI’s ChatGPT. No technical skills are required. I use this GPT three to four times a week.

Like 99% of ChatGPT users, you may have never created a GPT. Make this your first. The goal is to build a digital “AI employee” that specializes in proofreading and critiquing your PowerPoint presentations in minutes.

A GPT is a feature within OpenAI’s ChatGPT that lets nontechnical users create reusable mini programs, or AI agents. Think of it as a macro in Excel — a tool for repetitive tasks, whether simple or complex.

Below are steps to create a GPT that proofreads and critiques your PowerPoint presentations. Once built, it’s easy to reuse

How to Create the GPT

After opening ChatGPT, find “GPTs” on the left column and follow these five steps:

Click “Explore”
Click “Create GPT”
In the “Configure” tab, enter the following:

Name: “Slide Proofreader and Critic”

Instructions: [Cut and paste the following] You are an expert business editor and executive communication advisor. Review the attached presentation slide by slide.

Your tasks:
Proofreading and Consistency Check

Identify and list all typos, grammatical errors or formatting inconsistencies.
Note them by slide number and suggest precise corrections.
Check for consistency in terminology, capitalization, fonts, bullet styles and data formatting.

Logic and Narrative Flow

Evaluate overall structure and clarity.
Identify gaps, redundancies or weak transitions between slides.
Recommend improvements to strengthen clarity, flow and persuasion for a C-suite audience.
Flag any slides that distract from the core message or weaken executive impact.

Executive Readability and Strategic Emphasis

Assess whether each slide communicates a single clear takeaway suitable for senior decision-makers.
Suggest ways to make visuals, charts and wording more concise, data-driven and high impact.

Audience Challenge Questions

List the three toughest questions an executive audience might ask after viewing the deck.
For each, propose a data-backed answer that reinforces the presenter’s credibility.

Output Format Example:

Slide 3:

Typo: “efficency” → “efficiency”
Inconsistent bullet style (dash vs. dot)
Logical issue: jumps from problem to recommendation without explaining impact.
→ Add a slide quantifying the cost of the problem.

Slide 5:

Replace vague statement “We will optimize operations” with “We expect a 12% reduction in downtime within six months.”

Toughest Questions and Model Answers

Question: How confident are you in these projections?
Answer: The forecasts are based on historical performance data and conservative adoption rates, validated through a three-year trend analysis.

4. Click “Create” in the top-right corner.

5. Specify who has access to it and click “Update.

Congratulations, you’ve just built a GPT. You now have a powerful tool to proofread and critique your PowerPoint presentations for board, executive or client meetings. To use it, open ChatGPT and select your new GPT from the list in the left column.

FAQ: Creating a PowerPoint proofreader GPT in ChatGPT

1) Do I need technical or coding skills to create a GPT?
No. You can build a GPT by naming it and pasting instructions in the Configure tab, then saving it.

2) What should I upload for the GPT to review my slides?
Upload the PowerPoint file (PPTX) when possible. If needed, you can also upload a PDF export or slide images so it can review content slide by slide.

3) How do I make the feedback “executive-ready” instead of generic?
Tell the GPT the audience (CEO/CFO/board), the meeting objective, and the single decision you want from the deck. This anchors critique around clarity, precision, and impact.

4) How do I ensure the GPT gives feedback in a consistent format every time?
Include a fixed output template in the instructions (slide number → issue → exact correction → recommendation). Your “Output Format Example” already does this—keep it.

5) What are the most common slide issues this GPT should catch?
Typos, inconsistent terminology/capitalization, mixed bullet and font styles, unclear takeaways, weak transitions, and vague claims that need numbers or evidence.

6) How should I use this GPT in a repeatable workflow?
Run an early review for structure and narrative, apply edits, then run a second pass for polish and consistency. This two-pass workflow produces the best results.