r/PromptEngineering

Prompt-engineering community covering prompt design, agent workflows, examples, and practical GenAI techniques.

Runs as a subreddit. Independent, community-run — run by Reddit community moderators. Access: Public — Reddit account required to post. Cost: Free.

Best for Prompt engineers, AI power users, automation builders. The community reports ~398K members.

Listed under AI & ML communities on AI Tech Communities.