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Custom Instructions

2 guides on custom instructions.

A flat-vector illustration of a single golden template plate laid over an antique nautical chart, tracing the same golden route onto three smaller blank charts beside it, on a parchment-cream field with terracotta and azulejos-blue accents.

June 23, 2026 · 8 min read

Custom Instructions Examples: Copy-Paste Templates for ChatGPT, Claude, and Gemini

Real custom instructions examples you can copy and adapt — a fill-in-the-blank template plus five worked versions for founders, writers, freelancers, developers, and marketers, and exactly where to paste them in ChatGPT, Claude, and Gemini.

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A flat-vector illustration of an open navigator's logbook on an antique nautical chart, its lines being filled in by flowing golden current lines, on a warm sand and soft-terracotta field.

June 18, 2026 · 4 min read

How to Write Custom Instructions for ChatGPT, Claude, and Gemini

Most people leave the custom-instructions box vague or empty, so the model keeps guessing. Here's what to actually put in ChatGPT, Claude, and Gemini's custom instructions — and how to write them once and reuse them everywhere.

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