Claude Opus 5 Prompts: Research, Code and File Tasks

"Claude Opus 5 prompts" almost always means one of three jobs: get a cited answer you can trust, turn a pile of information into a real file (PDF, spreadsheet, doc), or hand the model a multi-step task and let it work. Anthropic's Opus line is built for exactly that kind of heavy lifting rather than quick chit-chat, and in Plurel it sits in the chat as Claude Opus 5.5 at 1.5 credits a message. This guide gives you the prompt patterns and the exact clicks.

What Claude Opus is actually good at

Opus is Anthropic's top-tier reasoning model, not its fastest one. Reviewers covering the Opus 4.5 release noted Anthropic's New Claude Opus 4.5 Reclaims the Coding Crown, and the release shipped alongside platform-level upgrades rather than as a standalone model drop: Anthropic also announced two updates to the Claude Developer Platform that go hand-in-hand with the Opus release. That combination — strong reasoning plus platform tooling — is why Opus-class models are the ones trusted with research, code review and long documents, not quick lookups.

The other thing worth knowing: Opus-class models are built to hold a lot of material in mind at once. As one pricing writeup put it, the larger context on Opus lets it process and remember a large amount of information at once, such as hundreds of pages from a document. Practically, that means you can paste in a long contract, a transcript, or a stack of research notes and ask Opus to work across all of it in one go, instead of chunking it yourself.

The short version: use Opus when the task needs judgment across a lot of material, not when you need a fast one-line answer. For the latter, Plurel's GPT-5.6 Luna or DeepSeek V4.1 Flash cost a fraction of a credit and answer faster.

The three prompt jobs, and how to word them

1. A cited research answer

Claude's web search tool is designed so answers come back with sources attached: it's built to give Claude access to current web content with cited sources, optional dynamic filtering, and domain controls. To get that behavior, be explicit that you want sources, not just an answer.

Search the web for the most recent data on [topic]. Give me a
direct answer in the first two sentences, then back up every
specific claim with a cited source. Flag anything you can't
verify instead of guessing.

Produces a sourced answer with inline citations. Run on Claude Opus 5.5.

Compare [Option A] and [Option B] on [price, specs, reviews].
Search for current information on both, cite every number, and
put the comparison in a table at the end.

Produces a cited comparison table. Run on Claude Opus 5.5.

2. A real file out of the chat

Opus can turn a conversation into an actual document. Say what the file is, what goes in it, and the format.

Build me a one-page PDF brief on [topic]: a summary paragraph,
three key findings with sources, and a short recommendation.
Use a clean business layout.

Produces a PDF saved to Document History. Run on Claude Opus 5.5 (file generation costs 1 credit via the PDF tool).

Turn this pasted data into a spreadsheet: one sheet with the raw
rows, one sheet with a pivot summary by [column], and a chart of
[metric] over time.
[paste data]

Produces an XLSX with two sheets and a chart. Run on Claude Opus 5.5.

Write a two-page project proposal as a Word document: problem,
approach, timeline with milestones, and estimated cost. Use
headings and a table for the timeline.

Produces a DOCX proposal. Run on Claude Opus 5.5.

Read the attached PDF and give me a one-page executive summary
as a new PDF: key numbers, risks, and three recommended actions.

Produces a summarized PDF from an uploaded file. Run on Claude Opus 5.5.

For more on this pattern, see the AI PDF generator guide, which covers spreadsheets and Word files from a single prompt in more depth.

3. A plan it executes with the tools

Opus, along with Sonnet 5 and GPT-6 Astra, can read your request, propose a plan with a credit cost, and then call the image or video tools once you approve. Be specific about the end result and let it propose the steps.

I need a 5-image product set for an online store listing: hero
shot on white, lifestyle shot, close-up of texture, size
comparison, and a lifestyle shot with a person using it. Propose
a plan and the models you'd use, then make them once I approve.

Produces a plan and a 5-image set via the image tool. Run on Claude Opus 5.5.

Plan a 15-second product ad: hook shot, product reveal, benefit
line, call to action. Tell me which video model fits the budget
and the total credit cost before you generate anything.

Produces a shot plan and then a video via the video tool. Run on Claude Opus 5.5.

Here's my brand brief [paste]. Plan a set of 4 social ad images
in a consistent style and propose the model and cost before
making them.

Produces an ad concept plus images via Social Ad or Image tools. Run on Claude Opus 5.5.

If the plan involves a short promotional clip, the AI video ad generator guide and short film guide show what a finished storyboard-to-clip workflow looks like end to end.

4. Code and long-document work

Review this code for bugs, security issues, and readability.
List problems by severity, then give me the fixed version.
[paste code]

Produces a prioritized code review plus a fix. Run on Claude Opus 5.5.

Here's a 40-page contract [attach]. Summarize the obligations
for each party, flag any unusual clauses, and quote the exact
line for each flag.

Produces a clause-by-clause summary with quotes. Run on Claude Opus 5.5.

Debug this: it should do [expected behavior] but does [actual
behavior] instead. Walk through why, then give the corrected code.
[paste code and error]

Produces a diagnosis and corrected code. Run on Claude Opus 5.5.

A prompting habit worth copying

One pattern that works well with Claude models generally is structure. An analysis of Claude's own system prompts found Anthropic organizes instructions into clearly labeled sections covering behavior, artifacts, search instructions, and the model's knowledge cutoff. You can borrow that: instead of one long paragraph, break your prompt into short labeled parts — Goal, Format, Sources, Constraints. Opus follows structured prompts more reliably than a wall of text, especially on multi-part file or research tasks.

Do it in Plurel

1. Open the chat — this link opens straight into Claude Opus 5.5.
2. Type your prompt using one of the patterns above. For research, add "search the web and cite sources" in the same message.
3. For a file, say what the file is (PDF, spreadsheet, or Word doc) and what sections it needs — Opus writes it and saves it to your Document History automatically.
4. For a plan with images or video, describe the end result and ask for a plan first. Opus will show you which model it would use and the credit cost before making anything — approve or adjust before it spends credits.
5. Keep editing with follow-ups: "make the second image brighter," "shorten that to one page," "redo the timeline with four milestones instead of three" — the chat edits what it just made rather than starting over.

If you want a model that leans harder into live web and social search specifically, the Grok 4.7 search guide covers that model's strengths side by side with chat-based research.

Troubleshooting and tips

If the answer comes back without citations, your prompt probably didn't ask for them. Add "search the web and cite every claim" explicitly — Opus won't search by default on every message.

If a generated spreadsheet or PDF looks off, don't start over: reply in the same chat with what to fix ("add a totals row," "make the second page landscape"). It's an edit to the existing file, not a new request.

If a plan's credit estimate looks high, ask for a cheaper version before approving — "what would this cost on Plurel Lite instead of Nano Banana 2?" — Opus can re-plan with a different model.

For straightforward one-off questions that don't need deep reasoning, Claude Sonnet 5 at 1 credit or GPT-5.6 Luna at 0.1 credits will usually get there faster and cheaper than Opus.

Open Claude Opus 5.5 with a specific goal, a format, and a request for sources, and it'll do the rest.