Claude Prompts

Claude excels at nuanced instruction-following, long-document analysis, and coding tasks. The best Claude prompts use detailed constraint lists (Claude follows these more precisely than most models), specify exact output formats, and take advantage of its 200K token context window for long documents. Claude also tends to acknowledge uncertainty more honestly than other models — ask it to flag low-confidence claims explicitly for research tasks.

Claude (by Anthropic) is increasingly the preferred AI tool for tasks requiring nuanced instruction-following, careful analysis, and long-document work. Claude 3.5 Sonnet leads benchmarks for coding, and Claude responds especially well to detailed constraint lists — making it ideal for tasks where the exact format and tone of the output matter. These prompts are designed for Claude's strengths: careful reasoning, document analysis, writing with a specific voice, and tasks that benefit from explicit constraints. They work on Claude.ai and via the Anthropic API.

Last updated: February 2026

Want to master AI prompts like a pro?

Join Prompt Writing Studio

Learn to create powerful AI prompts that get results

Ready-to-Use AI Prompts for Claude Prompts

Document Analysis with Constraints

Claude's strongest use case — analysing a long document with precise output requirements.

Analyse the attached document and produce a structured summary following these exact requirements: Format: - Title: [document title and date] - Type: [report/article/research paper/other] - Summary: 3 sentences maximum, covering the main argument and conclusion - Key claims: Numbered list of 5-7 specific claims made, each one sentence - Evidence quality: Rate the evidence for each claim as Strong/Moderate/Weak with one-sentence justification - Gaps: 2-3 things the document does not address but should - Reliability: Your overall assessment of the document's credibility (1-2 sentences) Constraints: - Do not use hedging language like "it could be argued" or "perhaps" - If you are uncertain about something, say "I am not certain" explicitly - Do not pad — use fewer words rather than more [paste document]

Writing with a Specific Voice

Use Claude's instruction-following precision to match a specific writing style.

Here are three paragraphs written in my voice: [paste example 1] [paste example 2] [paste example 3] Now write [new content — e.g. an introduction to a blog post about X] in exactly this voice. Match: sentence length, vocabulary level, use of first person, any signature phrases, and structural patterns. Constraints: - Do not make it sound more formal than the examples - Do not add transitional phrases like "In conclusion" or "Furthermore" - If you are unsure about a voice element, match the most common pattern in the examples rather than guessing

Code Review with Specific Focus

Claude 3.5 Sonnet is currently the leading model for code review.

Review the following [language] code with a focus on [security/performance/readability/correctness]. I am a [junior/mid-level/senior] developer. [paste code] Provide: 1. Overall rating: [1-10] with one-sentence justification 2. Critical issues (must fix before production): numbered list, each with the line number, the problem, and the corrected code 3. Recommended improvements: numbered list, each with justification 4. What is done well: 2-3 specific things Constraints: - Be direct — do not soften criticism - Flag if any issue is a security vulnerability explicitly - If the code is genuinely good, say so — do not invent issues

Research with Uncertainty Flagging

Leverage Claude's calibrated honesty for research tasks where accuracy matters.

Research question: [your question] Please answer this question drawing on your training data. For each factual claim you make: - Mark high-confidence claims with [HIGH] - Mark moderate-confidence claims with [MODERATE] - Mark low-confidence or uncertain claims with [UNCERTAIN: reason] At the end, list 3-5 specific questions I should verify with current sources before relying on this information. Do not present uncertain information confidently. If you do not know something, say so explicitly.

Editing with Tracked Changes Style

Get precise edits with explanations — useful for improving your own writing.

Edit the following text according to these priorities (in order): 1) Clarity, 2) Concision, 3) Active voice, 4) Specific over vague language. [paste your text] Format your response as: EDITED VERSION: [the improved text] CHANGES MADE: - [original phrase] → [revised phrase] — [reason in 5 words or less] (list all significant changes) Constraints: - Do not change my meaning — only improve expression - Flag any sentence where you are unsure of my intended meaning - Preserve any deliberate stylistic choices (I will tell you if you changed something I wanted to keep)

How to Use These Prompts

1

Copy the Prompt

Click the "Copy Prompt" button to copy the prompt to your clipboard.

2

Paste in AI Tool

Paste the prompt into ChatGPT, Claude, Gemini, or your preferred AI tool.

3

Customize & Use

Fill in the bracketed sections with your specific information and get results!

Frequently Asked Questions

What is Claude best at compared to ChatGPT?+

Claude consistently outperforms ChatGPT on: following detailed constraint lists, long-document analysis (200K context window), coding tasks (Claude 3.5 Sonnet leads most coding benchmarks), acknowledging uncertainty rather than confabulating, and nuanced writing tasks where specific voice and tone constraints matter. ChatGPT tends to be stronger for creative brainstorming, image generation (DALL-E integration), and plugin/tool use. For analytical writing, document work, and coding, many professionals prefer Claude.

Which Claude model should I use?+

Claude 3.5 Sonnet is the best all-round choice for most users — it balances capability, speed, and cost. It leads coding benchmarks and is excellent for writing and analysis. Claude 3 Opus is the most capable model for highly complex reasoning tasks but is slower and more expensive. Claude 3 Haiku is very fast and cost-effective for simple tasks and API use. For most everyday tasks, Claude 3.5 Sonnet is the right choice.

How is prompting Claude different from prompting ChatGPT?+

Claude follows detailed instructions and constraint lists more precisely than ChatGPT — so it rewards longer, more specific prompts. Claude is also more willing to say "I don't know" or flag uncertainty, which is valuable for research tasks. Unlike ChatGPT, Claude does not have plugin or tool-use support in the free tier. Claude also does not have built-in image generation. For tasks where you need precise constraint-following and honest uncertainty, Claude is the stronger choice.

Can I use Claude for free?+

Yes. Claude.ai offers a free tier with access to Claude 3.5 Sonnet with usage limits. Claude Pro ($20/month) gives higher usage limits, access to Claude 3 Opus, and priority access during peak hours. For developers, the Anthropic API is pay-per-token with no monthly fee. Free Claude.ai is sufficient for most everyday tasks — the limit is primarily on the number of messages per day.

Is Claude safe to use for sensitive business information?+

Anthropic is one of the most safety-focused AI companies, with a Constitutional AI approach to model training. For sensitive business information: Claude.ai has a Privacy Mode that prevents your conversations from being used for model training (check your settings). Enterprise customers can sign a data processing agreement. As with any cloud AI service, avoid pasting personally identifiable information, confidential client data, or trade secrets unless you have reviewed the terms of service and data handling policies.

Official Resources & Documentation