ChatGPT Custom Instructions: Best Settings for 2026
TL;DR: Custom Instructions tell ChatGPT about you and your preferences. Set them once and every conversation starts with context. This dramatically improves response quality.
Where to Find Custom Instructions
Open ChatGPT > Click your name (bottom left) > Settings > Personalization > Custom Instructions. You have two fields: ‘What would you like ChatGPT to know about you?’ and ‘How would you like ChatGPT to respond?’
Best Settings by Role
- Developer: ‘I am a senior full-stack developer using TypeScript, React, and Node.js. I prefer concise code with error handling. Use TypeScript types, not any. Explain complex logic with comments.’
- Writer: ‘I write B2B SaaS content. My audience is marketing managers. I prefer a professional but conversational tone. Use data and examples. Avoid jargon and fluff.’
- Student: ‘I am a computer science student. Explain concepts clearly with examples. When I ask about code, use Python. Break down complex topics step by step.’
- Marketer: ‘I manage marketing for a B2B SaaS startup. I need data-driven content. Always include actionable takeaways. Format with headers and bullet points.’
Pro Tips
- Be specific about your tech stack, industry, and audience
- Specify your preferred output format (markdown, bullets, code blocks)
- Include constraints (word count, reading level, tone)
- Update custom instructions quarterly as your needs change
Ready to get started?
Try ChatGPT Free →Find the Perfect AI Tool for Your Needs
Compare pricing, features, and reviews of 50+ AI tools
Browse All AI Tools →Get Weekly AI Tool Updates
Join 1,000+ professionals. Free AI tools cheatsheet included.
