Verified against ChatGPT · 2026-08-10
Draft a cover letter built around one real reason you want this specific job, not a template
Builds a short cover letter around a genuine, specific connection between your background and this one role, and refuses to fall back on generic enthusiasm language when that connection is thin.
The prompt
Ready to copy — highlighted parts are example details you can swap.
Help me write a cover letter for one specific job. I want it built around a real, specific reason I'm a fit for this role — not assembled from cover letter template phrases. JOB POSTING Growth Marketing Manager at a Series B fintech, owns paid acquisition and lifecycle campaigns... COMPANY AND WHY IT CAUGHT MY ATTENTION I used their budgeting app for two years before they had a marketing team big enough to hire for this role, and I have specific opinions about where their onboarding funnel loses people. MY RELEVANT BACKGROUND Ran paid acquisition for a smaller fintech competitor for 3 years, cut CAC by 30% by killing underperforming channels rather than adding new ones. THE ONE THING I WANT THIS LETTER TO PROVE That I understand this exact user (budget-conscious millennials) because I've marketed to the same segment, not just fintech broadly. TONE Direct and slightly informal — this company's own marketing voice is casual, so a stiff formal letter would read as tone-deaf. Before writing anything, tell me honestly whether the material I've given you supports a genuinely specific letter or only a generic one — if my company context or core thesis is thin, say so and ask me one clarifying question rather than writing around the gap with enthusiasm language. If the material supports a real letter, write it to this structure: open with the specific thing that connects me to this role or company (not "I am excited to apply"), spend the middle proving the core thesis with one or two concrete details from my background rather than restating my resume, and close with a specific, low-pressure next step rather than a generic "I look forward to hearing from you." Length: no more than 300 words. A cover letter this long gets skimmed in under a minute, and padding it to look thorough works against that. WHAT NOT TO DO Do not use any of these phrases or their close variants: "I am writing to express my interest," "I believe I would be a great fit," "I am a highly motivated professional," "team player," "passionate about." If you catch yourself about to write a sentence that only exists to sound enthusiastic rather than to prove something specific, cut it. After the letter, add a two-line note: which sentence in the letter is doing the most real work, and which sentence you kept only because cover letters conventionally include something like it (if any).
Customize
Optional — swap in your own details for the highlighted parts above.
Why this works
Cover letters generated by AI models tend to read as interchangeable because the model, left to its own defaults, reaches for the same register of enthusiasm phrases that show up across millions of training examples of this exact document type — "passionate about," "great fit," "excited to apply" are statistically the most common phrases in this genre, which is exactly why a hiring manager who reads dozens of these a week recognizes them instantly as filler. Naming the specific banned phrases directly, rather than giving a vague instruction like "avoid clichés," works because GPT-5.1 can reliably avoid a named phrase but is much less reliable at self-identifying what counts as a cliché in the abstract — an explicit list gives it a checkable constraint instead of a vibe to interpret. The upfront honesty check, where the model has to assess whether the input material actually supports a specific letter before writing one, exists because the alternative failure mode is worse than a generic letter: a model asked to write something specific from thin material will often invent a plausible-sounding but false connection to the company rather than admit the gap, and a candidate who ships a cover letter built on a fabricated detail risks it surfacing badly in an interview when asked to elaborate on something they never actually said. The closing self-assessment — which sentence does the most work, which is filler — gives the candidate a fast way to spot-check the output themselves rather than trusting a confident-sounding letter at face value, which matters because a model's own confidence in its writing is not a reliable signal of whether it actually avoided the traps it was told to avoid.
What you get back
"I've used [Company]'s app for two years, back when it was just budgeting alerts — I have specific opinions about where the onboarding funnel loses people, because I watched myself almost drop off at the same step. At my last role, I cut CAC 30% not by adding channels but by killing three that looked fine in aggregate and were quietly burning budget on users who never activated..." Most-work sentence: the CAC line, because it's the one concrete proof point. Kept-by-convention sentence: none — every line ties to the thesis.
Verified against
ChatGPT GPT-5.1 · 2026-08-10
Changelog
- 2026-08-10 — Initial publish, verified against ChatGPT GPT-5.1.
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