PRO TIP

By Pierre Bradshaw | PromptHacker Premium

GPT-5.4 Pro has a 1-million-token context window. That means it can ingest the equivalent of a small library of source material in a single prompt and still have room to think. Most people don't know how to use that capability. Here's how to build a complete research brief in 20 minutes flat.

The speed comes from structure. Instead of asking the AI one vague question and watching it ramble, you run it through a 4-step chain that mirrors how a human researcher would actually approach the problem.

Start by giving Gemini a topic and asking it to define the 5 most important sub-questions you need to answer to understand that topic fully. This narrows your research scope before you even look at sources.

Prompt:

I'm researching [TOPIC]. Before we dive in, list the 5 most important questions someone needs to answer to fully understand this topic. Be specific, avoid generic questions.

Paste in 3-5 source documents or URLs directly into Gemini. Google AI Studio (free tier) lets you upload files and paste long URLs. Gemini will extract the key facts from each source that address the 5 sub-questions from Step 1.

Prompt:

Here are [N] sources on [TOPIC]. For each of the 5 questions from Step 1, extract the most relevant facts and quotes from these sources. Cite which source each fact comes from.

Your sources won't answer everything. Ask Gemini what the gaps are. This tells you whether you need to find more sources or whether the research is complete enough to move to the final brief.

Prompt:

Based on what you've found, which of the 5 questions are still partially or fully unanswered by these sources? What additional information would be needed?

Ask Gemini to write the final research brief with a clear structure. Headers for each question make it scannable. A Key Findings summary at the top gives you the headline. A Research Gaps section at the bottom keeps you honest about what's still unknown.

Prompt:

Now write a structured research brief on [TOPIC] covering all 5 questions. Use headers for each question. Include a 'Key Findings' summary at the top and a 'Research Gaps' section at the bottom. Target 600-800 words.

Time to Value: 20 minutes

You get a research brief that would normally take 2-3 hours to build. Spend the saved time on strategy, not formatting.

Use ChatGPT Plus (select GPT-5.4 Pro from the model drop-down) or the API with model string gpt-5.4-pro. Both support file uploads. Open a new conversation, run the four prompts in order, and paste your sources when prompted in Step 2. The chain works because each step builds on the previous one — GPT-5.4 Pro retains the 5 sub-questions from Step 1 throughout the entire conversation.

The 1-million-token window means you don't have to break your sources into chunks. You can load a 50-page PDF alongside a transcript and three articles, ask a synthesis question, and follow up within the same chat. That continuity is where the speed comes from.

ALSO

If you haven’t tried NotebookLM yet, this is the time to do it.

NotebookLM lets you add many more sources and use Google’s deep research to go deeper into the subject, pull more information, and ask even more detailed questions. It can also create a podcast that lets you listen to everything about the subject and become an instant expert on your car ride home.

The article is based on ChatGPT because more people are using it in business at the moment. Very few people, relatively, have used NotebookLM. But for tasks like this, it’s really hard to beat NotebookLM in building entire notebooks around deep subjects that you might want to use or study for your business, or go deeper into to be able to explain it to the stakeholders in your business.

I personally use it to do this and to track all the AI, marketing, and health podcasts that cover the most groundbreaking developments, so I can stay on top of everything. It saves me hours of listening time weekly.

Whether you use ChatGPT or Notebook LM, if you use the tips above, you will amplify your learning and effortlessly stay ahead of the pack.

-Pierre

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