r/PromptEngineering
386k members
r/PromptEngineering is a subreddit with 386k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses prompt, ai, engineering, system, and tool.
Prompt engineering is the application of engineering practices to the development of prompts - i.e., inputs into generative models like GPT or Midjourney.
Popular Themes in r/PromptEngineering
#1
Advice Requests
: "I've been building this tool for 6+ months, and you will never use AI the same way again if you try this (Feedback appreciated)"
10 posts
#2
Solution Requests
: "my friend built GoblinMD : an offline desktop app to pack code & PDFs into prompts for LLMs (open source, built in Python & PyQt5)"
8 posts
#3
Pain & Anger
: "I didn't realise Claude could edit and restructure existing Word and Excel files. Spent months rebuilding documents from scratch like an idiot."
3 posts
#4
Self-Promotion
: "Got tired of overly technical/generic AI courses, so I built this 0-to-1 learning platform (100% free, no sign up required)"
1 post
Popular Topics in r/PromptEngineering
#1
Prompt
: "i found a Prompt hack so stupid it should not work. it works every time."
260 posts
#2
Ai
: "Fable 5's guardrAils got bypassed in 48 hours. Here's what that actually means for anyone building customer-facing Ai."
236 posts
#3
Engineering
: "“Prompt Engineering” turned out to be the easiest part of production AI systems"
47 posts
#4
System
: "How do you prompt an AI agent that has write access to real world Systems"
42 posts
#5
Tool
: "Claude Code Source Deep Dive (Part 5) — Literal Translation & Tool-Call Loop Self-Repair Core Mechanism"
41 posts
#6
Claude
: "This Claude prompt gave me the most accurate outside-perspective of myself I’ve ever read."
30 posts
#7
Model
: "Do prompts really change how different AI Models behave, or is it just hype?"
26 posts
#8
Research
: "Made a Prompt Library with all niched and more than 3000+ prompts , all auto categorized with all niched and perfect for each use case, best use case: image editing and legal Research"
20 posts
#9
Chatgpt
: "Chatgpt is surprisingly good at understanding messy, badly worded prompts — anyone else notice this?"
18 posts
#10
Project
: "I worked on this Project for 6 months"
18 posts
Flair Used in r/PromptEngineering
#1
General Discussion
: "I AM CANCELLING MY CLAUDE PRO SUBSCRIPTION (and here's my honest take)"
67 posts
#2
Prompt Text / Showcase
: "I didn't realise Claude could edit and restructure existing Word and Excel files. Spent months rebuilding documents from scratch like an idiot."
36 posts
#3
Quick Question
: "Do prompts really change how different AI models behave, or is it just hype?"
16 posts
#4
Tools and Projects
: "I built a local PDF-to-Markdown converter so you don't have to burn LLM tokens."
15 posts
#5
Tips and Tricks
: "An elegant prompting technique from Anthropic's Amanda Askell that changes how you learn complex concepts"
14 posts
#6
Tutorials and Guides
: "I wrote a book on using Claude Code for people that don't code for a living - 2nd edition out now - free copy if you want one"
14 posts
#7
Ideas & Collaboration
: "I built this 8 months ago, got scared, and almost never shared it — R-CoT, a reasoning framework for LLMs"
14 posts
#8
Requesting Assistance
: "Made a Prompt Library with all niched and more than 3000+ prompts , all auto categorized with all niched and perfect for each use case, best use case: image editing and legal research"
7 posts
#9
Other
: "Anthropic is giving 10,000 open-source maintainers 6 months of Claude Max 20x for free"
6 posts
#10
Research / Academic
: "Most LLM failures don’t come from prompts — they come from recursive assumption reinforcement"
4 posts
Member Growth in r/PromptEngineering
Yearly
+218k members(129.0%)
Similar Subreddits to r/PromptEngineering
r/ChatGPTPro
590k members
35.0% / yr
r/chatgpt_promptDesign
41k members
40.5% / yr
r/ChatGPTPromptGenius
797k members
58.1% / yr
r/DecodingDataSciAI
44 members
214.3% / yr
r/LLM
42k members
137.3% / yr
r/LLMDevs
152k members
69.1% / yr
r/PromptCentral
15k members
14572.1% / yr
r/PromptDesign
37k members
108.2% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/PromptEngineering, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: June 14, 2026