Chat GPT 5.1- personalisation tips
I posted this on my Linked in this morning and I got lots of thank you’s so thought i’d post on here +. i’d love to hear how others have personalised through custom instructions You should now have access To Chat GPT 5.1 If you're using ChatGPT for work, these settings will save you time and improve output quality. PLUS finally stop those unwanted em dashes!! What's actually new: GPT-5.1 Instant: More conversational, follows instructions more precisely GPT-5.1 Thinking: Adjusts thinking time based on question complexity GPT-5.1 Auto: Automatically picks the right model for each task PLUS Custom instructions now stick across all conversations AND 8 personality presets: Default, Friendly, Efficient, Professional, Candid, Quirky, Cynical, Nerdy Action steps to implement today: Step 1: Turn on personalisation Go to Settings → Personalisation + Enable customisation This activates all the new features Step 2: Choose your personality preset Efficient: Best for straightforward business tasks and productivity Professional: Good for client-facing work Candid: Balanced between professional and direct Cynical: Strong for creative writing with edge ** Test each one with the same prompt to see the difference. Step 3: Build your custom instructions Open Settings → Personalisation → Custom Instructions Structure something like this: Base statement: "Write like [your role] helping [your audience]." Style rules: Sentence length preference Formatting preferences (bullets, paragraphs, etc.) Words or phrases to avoid Tone specifications Working approach: How many clarifying questions to ask Whether to show reasoning or just answers How to handle missing information Example custom instruction: THIS IS MINE... "Write like an AI trainer and strategic advisor helping UK business owners adopt & implement with AI First Workflows. Be concise and practical. Use short sentences and paragraphs. Write in UK English. Avoid buzzwords, filler, limit the emoji's and NO em dashes. Get to the point quickly with the answer first. Always ask me 2 clarifying questions to help me share my domain expertise, state assumptions and proceed."