Should a resignation letter say why I am leaving?

Only if the reason is neutral and you want it on record. There is no obligation to explain, and a letter that stays brief and warm is easier to write and impossible to misread.

How formal should a resignation letter be?

Professional but not stiff. It goes in a file, so it should be clear about the date and the role, and warm enough that the person receiving it does not read it as a complaint.

Which AI model is best for writing a resignation letter?

All of them handle this; what changes is the packaging. This page shows the same prompt written for Claude, ChatGPT, Gemini. Claude follows XML-delimited structure most reliably, ChatGPT works best with markdown headings, and Gemini prefers the task stated before the material. The content of the prompt is identical in each.

Can I change this prompt for my own situation?

Yes, and you should. Replace the placeholders with your own details, then open it in the builder to add context specific to you. The builder scores what you supply and tells you exactly which missing piece would improve it most.

Why does this prompt include rules I did not ask for?

Because writing tasks carry requirements that experienced practitioners apply automatically and rarely write down. The compiler adds them so the output does not fail on something obvious. Every added rule is listed on the how it works page.

AI prompt for writing a resignation letter

This is a ready-made AI prompt for writing a resignation letter, written for Claude and free to copy. A resignation letter is a permanent record read by people you may need a reference from. The temptation is to explain, and explanation is exactly what turns a routine document into something quoted back at you. The prompt below handles that: it is compiled as a writing task, so it carries the structure and the constraints that kind of work needs.

The prompt

Written for Claude. Compiled as a writing task — producing original prose: articles, essays, stories, letters, and long-form copy.

<role>
You are a senior writer and editor with a decade of experience in this exact form.
</role>

<context>
Last working day: {{last_day}}. Relationship with the manager: {{relationship}}. Reason I am comfortable sharing: {{reason}}.
</context>

<task>
Write a resignation letter for my role as {{job_title}}.
</task>

<constraints>
- State the resignation and the last working day in the first two sentences.
- Do not list grievances, even if the departure is not amicable.
- Offer something concrete about the handover.
- Avoid unfortunately.
- Avoid i regret to inform you.
- Avoid after much deliberation.
- Write in plain, direct prose. Do not restate the prompt, and do not open with a throat-clearing sentence.
- Vary sentence length. Do not begin consecutive sentences with the same word or structure.
- Do not invent facts, statistics, quotations, or attributed opinions.
</constraints>

<output_format>
Respond in Markdown. Use descriptive headings, and keep paragraphs to three sentences or fewer. Tone: professional and warm, not effusive. Length: 150 words. Treat this as a requirement, not a suggestion.
</output_format>

Now, write a resignation letter for my role as {{job_title}}.

Open this in the prompt builder to add your own context and see what would improve it most.

What makes writing a resignation letter hard to prompt for

A resignation letter is a permanent record read by people you may need a reference from. The temptation is to explain, and explanation is exactly what turns a routine document into something quoted back at you.

Why this prompt works

Background comes before the instruction: The model reads the situation before it learns what to do with it, which stops the instruction being diluted by everything that follows. The task is then restated as the final line, where models weight it most heavily.
Rules a writing task assumes but nobody writes down: Write in plain, direct prose. Do not restate the prompt, and do not open with a throat-clearing sentence. Vary sentence length. Do not begin consecutive sentences with the same word or structure. These are added automatically because leaving them implicit is the most common reason this kind of output disappoints.

What to replace

Placeholder	What to put there
{{last_day}}	Your last day.
{{relationship}}	Your relationship.
{{reason}}	Your reason.
{{job_title}}	Your job title.

Check the output before you use it

Confirm the last working day is correct and matches your notice period.
Remove anything that reads as a complaint, however mild.
Check it would not embarrass you if forwarded to someone else.

The same prompt for other models

Identical content, packaged the way each model reads most reliably.

ChatGPT

## Role

You are a senior writer and editor with a decade of experience in this exact form.

## Context

Last working day: {{last_day}}. Relationship with the manager: {{relationship}}. Reason I am comfortable sharing: {{reason}}.

## Task

Write a resignation letter for my role as {{job_title}}.

## Constraints

- State the resignation and the last working day in the first two sentences.
- Do not list grievances, even if the departure is not amicable.
- Offer something concrete about the handover.
- Avoid unfortunately.
- Avoid i regret to inform you.
- Avoid after much deliberation.
- Write in plain, direct prose. Do not restate the prompt, and do not open with a throat-clearing sentence.
- Vary sentence length. Do not begin consecutive sentences with the same word or structure.
- Do not invent facts, statistics, quotations, or attributed opinions.

## Output format

Respond in Markdown. Use descriptive headings, and keep paragraphs to three sentences or fewer. Tone: professional and warm, not effusive. Length: 150 words. Treat this as a requirement, not a suggestion.

Now, write a resignation letter for my role as {{job_title}}.

Gemini

**Task**

Write a resignation letter for my role as {{job_title}}.

**Role**

You are a senior writer and editor with a decade of experience in this exact form.

**Context**

Last working day: {{last_day}}. Relationship with the manager: {{relationship}}. Reason I am comfortable sharing: {{reason}}.

**Constraints**

- State the resignation and the last working day in the first two sentences.
- Do not list grievances, even if the departure is not amicable.
- Offer something concrete about the handover.
- Avoid unfortunately.
- Avoid i regret to inform you.
- Avoid after much deliberation.
- Write in plain, direct prose. Do not restate the prompt, and do not open with a throat-clearing sentence.
- Vary sentence length. Do not begin consecutive sentences with the same word or structure.
- Do not invent facts, statistics, quotations, or attributed opinions.

**Output format**

Respond in Markdown. Use descriptive headings, and keep paragraphs to three sentences or fewer. Tone: professional and warm, not effusive. Length: 150 words. Treat this as a requirement, not a suggestion.

Now, write a resignation letter for my role as {{job_title}}.

Common questions

Should a resignation letter say why I am leaving?: Only if the reason is neutral and you want it on record. There is no obligation to explain, and a letter that stays brief and warm is easier to write and impossible to misread.
How formal should a resignation letter be?: Professional but not stiff. It goes in a file, so it should be clear about the date and the role, and warm enough that the person receiving it does not read it as a complaint.
Which AI model is best for writing a resignation letter?: All of them handle this; what changes is the packaging. This page shows the same prompt written for Claude, ChatGPT, Gemini. Claude follows XML-delimited structure most reliably, ChatGPT works best with markdown headings, and Gemini prefers the task stated before the material. The content of the prompt is identical in each.
Can I change this prompt for my own situation?: Yes, and you should. Replace the placeholders with your own details, then open it in the builder to add context specific to you. The builder scores what you supply and tells you exactly which missing piece would improve it most.
Why does this prompt include rules I did not ask for?: Because writing tasks carry requirements that experienced practitioners apply automatically and rarely write down. The compiler adds them so the output does not fail on something obvious. Every added rule is listed on the how it works page.

Browse all ready-made prompts, the full prompt library, or read the guides.