LangGPT

LangGPT is a structured, reusable prompt design framework that enables users to create high-quality prompts for large language models.

LangGPT is a structured and reusable prompt design framework proposed by Yunzhong Jiangshu in 2023. It functions as a programming language for prompts, organizing them hierarchically with variables, commands, and conditional logic. The framework is designed for anyone wanting to create high-quality prompts for large language models without relying on trial-and-error. Users can trigger it directly in major AI models by name, use automated generator tools, or install the Claude Code skill. It includes structured role templates, a rich example library, and extensive theoretical resources on prompt dynamics.

LangGPT at a glance

Best for: Writer, Marketer, Student
Runs on: Web, API, VS Code
Pricing: Free
Released: May 2023
Category: AI writing tool
Website: github.com/langgptai/LangGPT

Key features

Structured templates with hierarchical organization
Reusable modules for infinite adaptability
Variables, commands, and conditional logic
Automated generators like LangGPT GPTs and Kimi+ LangGPT
Claude Code skill integration
Modular roles with profiles, goals, and workflows

Use it for

Design structured, reusable prompts for large language models
Build personalized fitness and diet planners
Generate social media content
Compose classical poetry in traditional styles

Alternatives to LangGPT

Best Prompt Generator Extension — Applies prompt engineering frameworks to improve AI output automatically.
FlowGPT — Access community-built AI prompts and apps across diverse categories.
prompts.chat — Free, open-source community for sharing and organizing AI prompts.
editGPT — It tracks changes with AI while keeping document formatting intact.
Babeldoc4GPT — Translates complex PDFs in ChatGPT Work while keeping layouts, tables, and formulas intact.
GZH Design Skill — Generates styled HTML with inline CSS that preserves formatting when pasted into WeChat.
Content Principles — Teaches AI how viewer minds work for original short-form content.
GPTZero — Provides industry-leading detection accuracy for major AI models like ChatGPT and Gemini.
Grammarly — Personalized AI guidance and text generation on any app or website.
Humanize Text — It bypasses major AI detectors while keeping original keywords and meaning intact.
Writing DNA — It turns subjective writing styles into systematic, actionable rules for AI agents.
anti defensive writing Skill — Stops self-censorship and frames academic papers around core strengths.

All LangGPT alternatives