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How to Write Any Essay with AI — Step-by-Step Guide for All 6 Types

24 June 2026 12 min read By Forgely

The difference between AI-assisted writing and AI-generated slop isn't which tool you use — it's how you use it. A specific topic, the right essay type, the right length, and a revision pass produce something worth submitting. Generic inputs produce generic outputs.

This guide walks through each of the six academic essay types: what makes it structurally different, what to input to get correct output, what the output should contain, and how to refine it into a finished essay. Whether you're using Forgely's AI Essay Writer or any other AI tool, the principles apply.

In this article
  1. The AI essay workflow that works
  2. Argumentative essays
  3. Expository essays
  4. Persuasive essays
  5. Compare and contrast essays
  6. Narrative essays
  7. Descriptive essays
  8. The revision pass — turning a draft into a finished essay

The AI essay workflow that works

The most common mistake with AI essay writers is treating them as one-step solutions: input a topic, accept the output, submit. That produces detectable, homogeneous writing that misses the specificity that makes an essay good.

The workflow that produces genuinely useful results has three steps:

  1. Generate a structured first draft with the correct essay type, length, and grade level selected. The AI handles the architecture — thesis, structure, logical flow.
  2. Evaluate the draft against the essay type's requirements. Does it do what this essay type is supposed to do? (More on this below for each type.)
  3. Revise with your own knowledge and voice. Replace generic examples with specific ones. Add evidence you know. Adjust tone to match your own writing style. The AI built the frame; you furnish it.

The specific topic rule: "Climate change" produces generic output. "The role of carbon pricing mechanisms in reducing industrial emissions in the European Union" produces specific, substantive output. The more specific your topic, the more useful the draft. This applies to all six essay types.

Argumentative essays

Argumentative
Thesis + Evidence + Rebuttal
What it must do
Defend a debatable position with evidence, acknowledge the strongest opposing argument, and rebut it. The counterargument is not optional — an argumentative essay without a rebuttal isn't arguing, it's asserting.
What to input
A specific, debatable position — not a topic. Instead of "social media," try "Social media platforms should be legally required to verify user ages before allowing account creation." The more debatable the framing, the stronger the argumentative output.
What to check in the output
Does it open with a clear thesis (not a topic statement)? Is the counterargument in its own section? Does the rebuttal directly address the counterargument rather than ignoring it? Does the conclusion reaffirm the thesis rather than introducing new ideas?

The most important structural element in an argumentative essay is the counterargument section. A common AI failure is placing the counterargument in the conclusion as a throwaway ("while some may argue...") rather than developing it fully and then rebutting it with specific evidence. A strong rebuttal doesn't dismiss the opposing view — it takes it seriously and then shows why your position is still stronger.

Revision focus: Replace the AI's generic evidence with specific studies, statistics, or examples you know. "Studies show that social media affects teenagers negatively" becomes citable evidence when you replace "studies show" with an actual source.

Expository essays

Expository
Explain, Don't Argue
What it must do
Explain a topic objectively and clearly, without taking a position. The purpose is to inform, not to persuade. Structure follows the topic's logic: cause and effect, problem and solution, process, or classification.
What to input
A clear topic with an explicit explanation angle. "How machine learning models learn from data" or "The causes and effects of urban heat islands" — the angle is built into the topic framing.
What to check in the output
Is the tone genuinely neutral — no opinions or hedging language like "I believe"? Does the structure follow a logical explanation pattern (cause→effect, problem→solution, step 1→2→3) rather than a generic three-point structure?

Expository essays are the most forgiving to generate with AI because the neutral, informational tone is what AI defaults to. The main failure mode is when the AI inserts an opinion or thesis statement where none should exist. Check the opening paragraph — it should introduce the topic and the explanation angle, not state a position.

Revision focus: Expository essays benefit from concrete examples and precise facts. Replace general statements ("climate change has many effects") with specific, verifiable ones ("according to NOAA data, 2023 was the hottest year on record by a margin of 0.15°C").

Persuasive essays

Persuasive
Logic + Emotional Appeal
What it must do
Move the reader to agree with a position or take an action. Unlike argumentative, persuasive essays use emotional appeal (pathos) deliberately alongside logic. The tone is more urgent and the reader is addressed more directly.
What to input
A call to action framing often works well: "Why everyone should reduce meat consumption" or "The case for a four-day work week." The persuasive intent is in the framing.
What to check in the output
Does the opening hook grab the reader emotionally, not just state a fact? Does the essay address the reader directly ("you," "we")? Does the conclusion issue a specific call to action? Is the tone noticeably more urgent than a neutral expository essay?

The AI often produces persuasive essays that are too measured and academic — well-reasoned but not emotionally engaging. A persuasive essay should feel like someone who genuinely believes their position is trying to convince you. The revision pass for persuasive essays is where you add the human urgency that AI tends to sand down.

Revision focus: Add a concrete opening anecdote or scenario that makes the stakes feel real. Replace "many people struggle with work-life balance" with a specific human situation that makes the reader feel the problem before you start arguing about it.

Compare and contrast essays

Compare & Contrast
Parallel Structure Required
What it must do
Analyze two subjects across the same criteria, then draw a conclusion about what the comparison reveals. The two structures are point-by-point (alternating between subjects for each criterion) or subject-by-subject (cover all of A, then all of B). Both must end with a synthesizing conclusion.
What to input
Both subjects and an implied or explicit point of comparison: "Online learning vs traditional classroom education for adult learners" or "Renewable vs fossil fuel energy: economic and environmental comparison."
What to check in the output
Is every criterion applied equally to both subjects? Does the essay arrive at a conclusion — which is better, or what the comparison reveals — rather than just listing similarities and differences? Is the structure parallel (same criteria in same order for both subjects)?

The most common AI failure in compare-and-contrast essays is an incomplete conclusion. The comparison should arrive somewhere — either recommending one option over the other for a specific context, or revealing a broader insight about what the comparison tells us. An essay that ends with "both approaches have merits and limitations" hasn't done the analytical work that makes the comparison valuable.

Revision focus: Sharpen the conclusion to take a clear position. Which is better, and for whom, under what conditions? Specificity here is what separates a thoughtful analysis from a both-sides summary.

Narrative essays

Narrative
Story Structure + Reflection
What it must do
Tell a story in first person with a clear arc: scene-setting, rising action, climax or turning point, and reflection on what the experience meant. The purpose is to convey meaning through a specific experience, not to inform or argue.
What to input
A specific experience or moment, not a topic: "The day I realized I had been wrong about my career" or "Learning to cook for the first time after moving abroad." The more specific the experience, the more vivid the output.
What to check in the output
Is it in first person? Does it open with a scene (sensory detail, moment in time) rather than a thesis statement? Is there a clear turning point or moment of insight? Does it end with reflection on what the experience meant, not a summary?

Narrative essays require the most significant revision of any type, because the AI is generating a fictional version of a personal experience. The structure and arc will typically be correct, but the specific sensory details, the emotional texture, and the voice need to be replaced with your own. Think of the AI output as a skeleton — it has the right bones, but you have to put flesh on it.

Revision focus: Replace every abstract description with a concrete sensory detail. Replace "I was nervous" with the specific physical sensation of nervousness — the dry mouth, the way time seemed to move differently. This is where the essay becomes yours.

Descriptive essays

Descriptive
Sensory Experience Over Argument
What it must do
Create a vivid experience for the reader through sensory detail — what is seen, heard, felt, smelled, tasted. There is no thesis, no argument, no informational agenda. The entire purpose is to make the reader feel as if they're there.
What to input
A specific place, person, or object with sensory anchors: "A grandfather's workshop full of old tools" or "The moment a stadium goes silent before a penalty kick." Specificity drives richness.
What to check in the output
Are all five senses present? Is the language concrete and specific (not "it was beautiful" but what specifically made it beautiful)? Is there no thesis or argument — only description? Does the essay create an experience rather than a report?

Descriptive essays are where AI struggles most with the temptation to inform rather than evoke. Watch for analytical language ("this represents," "this shows") slipping into what should be pure description. The revision pass is about stripping out any explanatory language and replacing it with richer sensory detail.

Revision focus: The smell and sound of a place are consistently underdeveloped in AI descriptive writing. Go through the output specifically looking for opportunities to add olfactory and auditory detail — these two senses are the most powerful for creating a sense of presence.

The revision pass — turning a draft into a finished essay

Every AI-generated essay requires a revision pass. Not because the output is bad — it's typically structurally correct and well-written — but because it's generic. It has the right bones but no specific flesh. The revision pass is where you make it yours.

A useful revision checklist for any AI-generated essay:

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Written by the Forgely editorial team

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