DevelopersMatrix

Free AI Prompt Library for ChatGPT and Claude

64 ready to use prompts for coding, writing, marketing, careers and more. Fill in the blanks, then copy the prompt or open it straight in ChatGPT or Claude.

  • 64 prompts
  • 8 categories
  • 3 image prompts
  • No signup

Browse prompts

64 prompts

  • Find the cause of an error and get a fix you can trust.

    Coding4 blanks to fill

  • A senior style review that ranks issues by how much they matter.

    Coding3 blanks to fill

  • Tests for the happy path, edge cases and failures.

    Coding2 blanks to fill

  • Understand unfamiliar code without the jargon.

    Coding2 blanks to fill

  • Cleaner code that behaves exactly the same.

    Coding2 blanks to fill

  • Turn a plain question about your data into SQL.

    Coding3 blanks to fill

  • A clear README or docs page for a function, module or API.

    Coding2 blanks to fill

  • A tested regex with a plain English breakdown.

    Coding4 blanks to fill

  • A structured outline built around what readers search for.

    Writing4 blanks to fill

  • Tighter, clearer writing that still sounds like you.

    Writing1 blank to fill

  • The same message, adjusted for a new audience.

    Writing3 blanks to fill

  • A clear email from a few rough notes.

    Writing3 blanks to fill

  • The key points of a long text in the length you need.

    Writing2 blanks to fill

  • Ten headlines in different styles to choose from.

    Writing3 blanks to fill

  • Make complex ideas clear for non experts.

    Writing2 blanks to fill

  • Catch typos and grammar mistakes without rewriting your style.

    Writing2 blanks to fill

  • Search snippets that match intent and earn the click.

    Marketing4 blanks to fill

  • Three ad angles to test against each other.

    Marketing5 blanks to fill

  • A useful picture of your buyer, built from what you know.

    Marketing2 blanks to fill

  • Two weeks of post ideas with hooks and formats.

    Marketing4 blanks to fill

  • A full landing page structure with headlines and sections.

    Marketing5 blanks to fill

  • A newsletter people actually open and read.

    Marketing4 blanks to fill

  • Group search topics into pages so you do not compete with yourself.

    Marketing3 blanks to fill

  • See how competitors position themselves and where the gaps are.

    Marketing2 blanks to fill

  • Strengths, weaknesses, opportunities and threats with next steps.

    Business2 blanks to fill

  • Draft one section of a business plan at a time.

    Business3 blanks to fill

  • Compare pricing models for a product or service.

    Business5 blanks to fill

  • A focused agenda with time boxes and decisions to make.

    Business4 blanks to fill

  • Slide by slide content for an investor or partner pitch.

    Business4 blanks to fill

  • Compare options against weighted criteria.

    Business2 blanks to fill

  • Find the patterns in reviews, surveys or support tickets.

    Business2 blanks to fill

  • A short, specific first email that does not read like spam.

    Business5 blanks to fill

  • Rewrite your bullets around what the posting asks for.

    Career2 blanks to fill

  • A mock interview that asks one question at a time.

    Career2 blanks to fill

  • Turn a real story into a clear Situation, Task, Action, Result answer.

    Career2 blanks to fill

  • What to say when you ask for more, and how to answer pushback.

    Career5 blanks to fill

  • A first person summary that says what you do and for whom.

    Career4 blanks to fill

  • Map the skills you have to the role you want.

    Career4 blanks to fill

  • A short thank you note that reminds them why you fit.

    Career4 blanks to fill

  • Look past salary to what each offer really gives you.

    Career2 blanks to fill

  • A step by step learning plan with checks along the way.

    Learning3 blanks to fill

  • Explain it back in your own words and find the gaps.

    Learning2 blanks to fill

  • Questions that test understanding, not just memory.

    Learning2 blanks to fill

  • Clear question and answer cards from your notes.

    Learning1 blank to fill

  • See exactly how two similar ideas differ.

    Learning3 blanks to fill

  • A tutor that guides you with questions instead of answers.

    Learning1 blank to fill

  • Understand a paper's question, method and findings quickly.

    Learning2 blanks to fill

  • A real conversation with gentle corrections.

    Learning3 blanks to fill

  • Turn messy notes into decisions, owners and deadlines.

    Productivity1 blank to fill

  • A realistic week built around your real priorities.

    Productivity4 blanks to fill

  • Turn a big goal into small, clear next steps.

    Productivity3 blanks to fill

  • Sort a long list into what matters now and what can wait.

    Productivity2 blanks to fill

  • A calm, clear reply when emotions are running high.

    Productivity3 blanks to fill

  • Five minutes to close the day and set up tomorrow.

    Productivity1 blank to fill

  • Document a task so anyone can repeat it.

    Productivity3 blanks to fill

  • A tick box checklist from any messy set of notes.

    Productivity1 blank to fill

  • A first scene that hooks the reader.

    Creative4 blanks to fill

  • Many different ideas, from safe to unusual.

    Creative2 blanks to fill

  • A rounded character with wants, flaws and history.

    Creative2 blanks to fill

  • A detailed scene prompt for Midjourney, DALL·E or Stable Diffusion.

    Creative7 blanks to fillImage prompt

  • A clean studio style product shot.

    Creative5 blanks to fillImage prompt

  • Simple logo ideas to explore before working with a designer.

    Creative5 blanks to fillImage prompt

  • A tight script for a 30 to 60 second video.

    Creative5 blanks to fill

  • Names for a product, business or project.

    Creative4 blanks to fill

Why Prompt Quality Determines Your AI Results in 2026

The same AI model can give you a generic answer or a genuinely useful one, and the difference is mostly the prompt. A vague request like "write a blog post about productivity" gets safe, forgettable text. A prompt that gives the model a role, your real context, clear steps and the format you want gets something you can actually use.

Writing prompts like that every time is slow. The DevelopersMatrix AI Prompt Library gives you 64 prompts that already have that structure. You pick one, fill in a few blanks with your details and use it in ChatGPT, Claude, Gemini or an image tool.

What You Can Do With the Prompt Library

Fill in the blanks

Every blank in square brackets becomes a field. The prompt updates as you type, with filled parts highlighted in green and empty ones in amber, so nothing gets sent half finished.

Open it in ChatGPT or Claude

Send a finished chat prompt straight to ChatGPT or Claude in a new tab, already filled in. Or copy it for Gemini, Copilot or any other assistant.

Search 64 prompts

Search by task or keyword, browse 8 categories, and switch between chat prompts and image prompts for Midjourney, DALL·E and Stable Diffusion.

Save and share

Bookmark the prompts you use often. They are kept in your browser, not on our servers. Copy a link to any prompt to send it to a teammate.

Five Prompt Mistakes That Waste Your AI Subscription

  1. 1

    Vague, open ended requests

    "Write something good about marketing" gives the AI nothing to work with. It has no idea of your industry, audience, tone or goal, so it falls back on safe generalisations.

    Fix: Give it a role, context, a format and limits. "You are a SaaS marketing lead. Write a 500 word post about onboarding emails for B2B software, with three examples, in a plain and friendly tone."

  2. 2

    Not assigning a role

    Without a role, the AI answers as a general assistant. That is fine for simple questions but weak for specialist work.

    Fix: Start with who it should be: "You are an experienced Python developer who works with Django REST APIs." The role shapes the knowledge, tone and level of detail.

  3. 3

    Forgetting the output format

    You wanted a table and got a wall of text. You wanted a checklist and got paragraphs.

    Fix: Say exactly how you want the answer laid out, for example "a table with columns for Feature, Option A and Option B". Most prompts in this library already include a format.

  4. 4

    No examples for complex tasks

    For writing in your brand voice or producing structured data, the AI has to guess your preferences, and it often guesses wrong.

    Fix: Include one to three short examples of what good looks like. Even a single example changes the output a lot.

  5. 5

    Treating the first answer as final

    The first answer is a draft. Most people accept it, tweak a few words and move on.

    Fix: Reply with what to change: "shorter", "more specific to small shops", "use simpler words". Two or three rounds usually beat the first draft by a clear margin.

Who Benefits From the AI Prompt Library

Developers

Debugging, code review, unit tests, refactoring, SQL, regular expressions and documentation, with blanks for your language and code.

Writers and content creators

Blog outlines, editing, proofreading, tone rewrites, summaries and headline ideas that keep your own voice.

Marketers

SEO titles and meta descriptions, ad copy variations, landing pages, newsletters, personas and keyword clusters.

Founders and managers

SWOT analysis, business plan sections, pricing options, pitch deck outlines, decision matrices and cold outreach.

Job seekers

Tailored resume bullets, STAR interview answers, mock interviews, salary negotiation scripts and follow up emails.

Students and lifelong learners

Study plans, Socratic tutoring, practice quizzes, flashcards and plain language guides to research papers.

Complete Your AI Toolkit

Other free tools from DevelopersMatrix that pair well with a good prompt:

AI Content Detector

Check whether a piece of text reads as AI written before you publish it.

AI Email Assistant

Draft and rewrite emails for different tones and situations.

AI Resume Builder

Write an ATS friendly resume with a live check on every bullet.

Cover Letter Generator

Build a cover letter around the job posting and your own experience.

Interview Simulator

Practise interview questions and see what your answers covered and missed.

View all free tools

Planners, trackers, calculators and more.

How to Use Any Prompt in 60 Seconds

1

Find it

Search for your task or open a category. Each card tells you what the prompt does and how many blanks it has.

2

Fill it

Type your details into the fields. "Write a blog post about [Topic] for [Reader]" becomes "Write a blog post about Kubernetes for junior developers".

3

Use it

Copy it or open it in ChatGPT or Claude. Read the answer, then reply with one change to make it better.

Frequently Asked Questions About the AI Prompt Library

Is the AI Prompt Library free?
Yes. All 64 prompts are free to use, with no signup and no limits. You can browse, fill in, copy and save as many as you like.
What is the AI Prompt Library?
A collection of 64 ready to use prompts for ChatGPT, Claude, Gemini and image tools like Midjourney, grouped into 8 categories: Coding, Writing, Marketing, Business, Career, Learning, Productivity and Creative. Each prompt gives the AI a clear role, the context it needs, the steps to follow and the format to answer in.
How does the prompt builder work?
Each prompt has a few blanks in square brackets, such as [Topic] or [Paste your code]. When you open a prompt, every blank becomes a field. As you type, the prompt updates and highlights what you have filled in and what is still empty. When you are done, copy it or open it straight in ChatGPT or Claude.
Can I open a prompt directly in ChatGPT or Claude?
Yes. For chat prompts, the Open in ChatGPT and Open in Claude buttons open a new tab with your filled in prompt already in place. Very long prompts, for example with a lot of pasted code, are too long to send in a link, so the tool asks you to copy and paste those instead. Image prompts are meant to be copied into Midjourney, DALL·E, Stable Diffusion or a similar tool.
Can I save prompts?
Yes. Use the bookmark on any prompt to add it to your Saved list. Saved prompts are stored in your own browser, so they stay on this device and are not uploaded anywhere. You can also copy a link to any prompt to share it.
Is what I type into the blanks private?
What you type stays in your browser. Nothing is sent to DevelopersMatrix. It only leaves your device when you copy the prompt or choose to open it in ChatGPT or Claude, which then works under that service's own privacy rules. Avoid pasting passwords, keys or personal data about other people into any AI tool.
Do I need to know prompt engineering to use this?
No. The prompts already follow the habits that make AI answers better: a role, specific context, clear steps and an output format. You only fill in your details. Using them for a while is also a good way to learn how strong prompts are put together.
Will these prompts work with every AI model?
The chat prompts are written in plain language and work with ChatGPT, Claude, Gemini, Copilot and other chat assistants. Results vary between models and versions, so treat the first answer as a draft, check facts that matter and ask follow up questions to refine it.

Stop Writing Prompts From Scratch

Pick a prompt, fill in your details and get a better first answer. Free, no signup.

Browse the prompts

A strong prompt has

  • A role. Who the AI should be.
  • Context. Your situation, audience and goal.
  • Steps. What to do, in order.
  • A format. How the answer should look.
  • Limits. Length, tone and what to avoid.

Related Resources

Free AI Prompt Library: 64 Ready Prompts for ChatGPT, Claude, and Gemini

Our free AI prompt library collects 64 prompts for real tasks: fixing code, editing writing, planning campaigns, preparing for interviews, studying and creating images. Each one is written in plain language so it works across ChatGPT, Claude, Gemini and other assistants, and each one comes with a short tip for getting a better answer.

How the Prompts Are Built

Every chat prompt follows the same pattern. It tells the AI who to be, gives it the context you fill in, lists the steps to follow and sets the format of the answer. Where a model might be tempted to make things up, the prompt tells it to ask you or to mark the gap instead. That pattern is what turns a generic reply into one you can use.

The 3 image prompts work differently. Image tools respond best to a short list of visual details, so those prompts are a chain of subject, setting, light, style, colour and camera view that you swap out to get the picture you want.

Prompt Categories Available

Coding (8)

Debug, review, test and explain code.

Writing (8)

Drafts, edits and rewrites.

Marketing (8)

Copy, SEO and campaigns.

Business (8)

Strategy, plans and analysis.

Career (8)

Jobs, interviews and growth.

Learning (8)

Understand and remember anything.

Productivity (8)

Plans, notes and decisions.

Creative (8)

Stories, ideas and images.

Start Using Better Prompts Today

Browse the prompts, fill in your details and copy the ones that fit your work. Free and no signup.