Starter kits · last verified 2026-10-23

ChatGPT starter kit

ChatGPT is a chat product first — but with custom instructions and a repeatable checking step, it can run a small, regular workflow for you. This kit sets that up.

Prerequisites

• An email address you can receive a sign-in message at, for the account.
• A first workflow in mind — something you do every week with the same shape, like drafting a summary, triaging a list, or turning notes into a plan.
• No payment needed to start: OpenAI's pricing page lists a Free plan for trying ChatGPT.

Setup, step by step

1. Create or sign in to your account. Go to ChatGPT on the web or in a supported app, and sign in. OpenAI's Help Center describes the sign-in route for account and subscription management as: log in, click your profile icon, and open Settings.
2. Decide whether to pay. Plus is $20/month, billed monthly, with broader model and tool access than Free; OpenAI's Help Center says Plus has no annual plan. Pro comes in three monthly tiers — Pro 100 $100, Pro 200 $200, Pro 500 $500 — billed monthly, with no annual billing or multi-month prepayment. Start on Free, and upgrade only when you can name a limit you keep hitting.
3. Set custom instructions. Custom instructions tell ChatGPT what it should know about you and how it should respond, and they apply to new conversations until you change, disable, or remove them. They are available on all plans, on web, desktop, iOS, and Android. On web and desktop:
   1. Open Settings, select Personalization.
   2. Make sure Enable customization is toggled ON.
   3. Enter your instructions in the Custom Instructions field.
   On iOS and Android, the same setting lives under Settings → Customize ChatGPT, with Enable customization toggled ON. Character limits, per OpenAI's Help Center: Free and Go users can save up to 1,500 characters; Plus, Pro, Enterprise, Business, and Education users can save up to 5,000 characters.
4. Write short instructions, not an essay. A useful first version fits in a few lines: your role, the tone you want, and one rule about checking. For example: “I run a three-person support team. Keep answers short, use bullet points, and never invent numbers — if a figure is not in the text I pasted, say so.”

First task walkthrough: a weekly workflow

1. Pick the workflow. Example: a weekly summary of support notes. Keep it to one job, done the same way each week.
2. Paste the brief, not just the question. Use the brief builder on this site (task, audience, constraints, what good looks like, what to check) and paste the result into a new chat, followed by the material to work from.
3. Ask for the output in a checkable shape. For example: “Three sections — top issues, counts, and one suggested fix each. Show each count next to the note it came from.”
4. Check before using. Verify every number against the material you pasted, and every claim that sounds like a fact against its source. If a count has no visible source in the answer, treat it as unverified and ask where it came from — or re-do that part yourself.
5. Save what worked. When a workflow produces a good result twice, fold the wording that made it work into your custom instructions, so the next run starts from it.

Common first-run failures

• Instructions do not seem to apply. Check that Enable customization is ON, and start a new chat — OpenAI's Help Center says updates to custom instructions are reflected only in future conversations.
• The answer invents a detail. This is the failure to plan for. Tighten the brief (“use only the text I pasted; do not invent figures”) and add the same rule to your custom instructions. Then check the output against the source, every time.
• You hit a limit. Plus subscriptions may include usage limits such as message caps, especially during high demand, per OpenAI's Help Center. Limits vary with system conditions — waiting, shortening the task, or splitting it across chats are the documented-shape responses; the Help Center also says support cannot reset limits.
• Old chats still follow old instructions. That is expected behaviour per the Help Center: updates apply to future conversations, and clearing a conversation removes the old instructions from it.
• Custom instructions run over the character limit. Free and Go allow 1,500 characters; paid plans listed above allow 5,000. Cut the essay — keep the role, the tone, and the checking rule, and drop the rest.

Limits

• ChatGPT is a chat product with agent-style features, not a coding agent that edits your files. For work inside a codebase, use the Claude Code or Cursor kits instead.
• API usage is separate from a ChatGPT subscription and billed independently, per OpenAI's Help Center — paying for Plus does not buy API calls.
• Custom instructions guide responses; they do not guarantee them. The checking step is the workflow.
• Prices (2026-10-23, from OpenAI's Help Center): Plus $20/month, monthly billing only; Pro 100 $100, Pro 200 $200, Pro 500 $500, monthly. Prices are US list prices and are subject to change.

Verification

Checked 2026-10-23

Sources fetched this run:

• help.openai.com — ChatGPT Custom Instructions — available on all plans and platforms, web/desktop path (Settings → Personalization → Custom Instructions, Enable customization ON), iOS/Android path (Settings → Customize ChatGPT), character limits (1,500 Free/Go; 5,000 Plus, Pro, Enterprise, Business, Education), updates apply to future conversations only.
• help.openai.com — What is ChatGPT Plus — $20/month billed monthly, no annual plan, broader access than Free, API usage billed separately, sign-up via profile icon → Upgrade Plan → Get Plus, usage limits may apply.
• help.openai.com — About ChatGPT Pro tiers — Pro 100 $100, Pro 200 $200, Pro 500 $500, monthly billing, no annual or multi-month prepayment, support cannot reset limits.
• chatgpt.com/pricing — Free plan listed for trying ChatGPT; Plus and Pro tiers listed (the page extraction did not show prices, so all prices above come from the Help Center pages, not from this page).

Omitted, with reason: custom GPT creation steps — this kit deliberately uses custom instructions instead. No OpenAI Help Center page on creating GPTs was fetched this run, and third-party summaries fetched this run disagreed about GPT availability and retirement timing, so no GPT creation command or timeline is stated here. If you already use a GPT, check OpenAI's current GPT guidance inside your own account before building a workflow on it. Also omitted: ChatGPT Go pricing — no OpenAI Help Center Go price page was fetched this run, so no Go price is stated. Business/Enterprise pricing — team plans with per-seat pricing are outside a personal starter kit.

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