OpenAI Personas, Pre-Written and Categorized
Because writing 'You are a helpful assistant' gets old fast, this repo collects ready-made system prompts to snap ChatGPT into specific roles.

What it does This repository is a curated gallery of text files containing system prompts for OpenAI’s ChatGPT. Each file defines a persona—ranging from a Socratic Tutor to a Shakespearean Pirate—intended to steer the model’s behavior when used as a system message. It is essentially a community-curated cookbook of character instructions, organized into educational, entertainment, utility, and others categories.
The interesting bit
The project treats prompt engineering as a content curation problem rather than a technical one. There is no code or framework here—just the recognition that a well-crafted paragraph of instructions is itself the product, and that borrowing a Blockchain Development Tutor prompt is faster than writing one from scratch.
Key highlights
- Roughly 50 distinct personas across four categories, from
Python TutortoStand-up Comedian. - Prompts are plain Markdown files formatted for use as API system messages or chat UI starters.
- Includes a
CONTRIBUTING.mdfor community submissions, positioning itself as a living collection. - Covers niche utility roles like
SQL Terminal,JSON AI Assistant, andTax GTPalongside general entertainment.
Caveats
- The README suggests prefixing prompts with
[SYSTEM]when using the ChatGPT web interface, a workaround that may not behave identically to an actual API system message. - Quality and effectiveness of each prompt are unclear; the README provides no examples, benchmarks, or notes on model compatibility.
Verdict Worth bookmarking if you frequently prototype ChatGPT integrations or need a quick persona for a demo. Skip it if you are looking for a programmatic framework, automated prompt evaluation, or anything resembling actual source code.
Frequently asked
- What is mustvlad/ChatGPT-System-Prompts?
- Because writing 'You are a helpful assistant' gets old fast, this repo collects ready-made system prompts to snap ChatGPT into specific roles.
- Is ChatGPT-System-Prompts open source?
- Yes — mustvlad/ChatGPT-System-Prompts is open source, released under the MIT license.
- How popular is ChatGPT-System-Prompts?
- mustvlad/ChatGPT-System-Prompts has 1.2k stars on GitHub.
- Where can I find ChatGPT-System-Prompts?
- mustvlad/ChatGPT-System-Prompts is on GitHub at https://github.com/mustvlad/ChatGPT-System-Prompts.