8 GPT communities on Reddit
Updated 6/3/2026
r/PromptEngineering
on reddit
Prompt engineering is the application of engineering practices to the development of prompts - i.e., inputs into generative models like GPT or Midjourney.414K members
Forum21 views / month

r/GPT3
on reddit
The subreddit for AI text generation technology1.4M members
Forum6 views / month

r/ChatGPT
on reddit
Subreddit to discuss ChatGPT and AI. Not affiliated with OpenAI. Thanks, Nat!11.6M members
Forum10 views / month

r/ArtificialInteligence
on reddit
The high-signal hub for artificial intelligence!1.9M members
ForumJobsCourses6 views / month

r/aipromptprogramming
on reddit
A place for all those who take speaking to AI with the same seriousness as programming.238K members
ForumCourses3 views / month

r/PromptDesign
on reddit
The art of prompting LLMs such as OpenAI GPT & Codex, Anthropic Claude, Google Gemini, GPT-OSS, Kimi. This is the largest community on Reddit when it comes to prompt design.39K members
Forum6 views / month

r/ChatGPTPromptGenius
on reddit
ChatGPTPromptGenius: Master the Art of Prompting Learn to engineer better AI prompts together. We analyze structure, tone, and technique to help you get consistently better results from LLMs. Share prompts. Get feedback. Improve your craft. New here? Check the Wiki & Community Guide.818K members
Forum5 views / month

r/ChatGPTPro
on reddit
Unofficial community for professional, advanced use of ChatGPT and modern LLMs. Share workflows, prompts, tools, and case studies that improve real work, study, and life—from business automation and coding to research, writing, and personal decision-making. Cross-model insights (Claude, Gemini, Grok, etc.) welcome when relevant. Not a support forum for billing, outages, or login issues. ChatGPT Pro subscription not required – here, “Pro” describes how you use it, not what you pay.610K members
Forum4 views / month
FAQ
Aggregate Stats
Community size
- Tiny: 0 communities (<20 members)
- Small: 0 communities (20-100 members)
- Medium: 0 communities (100-1,000 members)
- Large: 0 communities (1,000-10,000 members)
- Huge: 1 communities (10,000-100,000 members)
- Massive: 4 communities (100,000-1M members)
- Gigantic: 3 communities (1M+ members)


