Best Claude Prompts 2026: Opus 4.6 & Sonnet 4.6 Examples (60+ Copy-Paste)

Best Claude Prompts 2026: Opus 4.6 & Sonnet 4.6 Examples (60+ Copy-Paste)

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LucyBrain Switzerland ○ AI Daily

Best Claude Prompts 2026: Opus 4.6 & Sonnet 4.6 Examples (60+ Copy-Paste)

February 23, 2026

TL;DR: Claude Prompts

60+ prompts: Long documents, writing, analysis, research
Works on: Claude Opus 4.6, Sonnet 4.6, free tier
Claude advantage: 1M context, best writing, thoughtful analysis
Copy-paste ready: Customize [brackets] for your needs
All tested: Working prompts for Feb 2026

Claude's superpower is thoughtful analysis.

Here's how to use it properly.

What Makes Claude Different?

vs ChatGPT:
✓ 1M token context (vs 128K)
✓ Better writing quality
✓ More nuanced responses
✓ Honest about limitations

vs Gemini:
✓ Better at analysis
✓ Superior writing
✓ More thoughtful
✗ No real-time search

Claude excels at:
✓ Long document analysis (500+ pages)
✓ Quality writing
✓ Complex reasoning
✓ Following instructions precisely
✓ Honest uncertainty

LONG DOCUMENT ANALYSIS (15 Prompts)

Analyze Entire Books

Prompt 1: Book summary

I'm uploading [book title]. Please:
1. Summarize main thesis (3 paragraphs)
2. Extract 10 key insights with page references
3. List 5 practical applications
4. Note any logical flaws or biases
5. Compare to [similar book]

Prompt 2: Academic paper analysis

Analyze this research paper:
- Research question and hypothesis
- Methodology strengths and weaknesses  
- Key findings with statistical significance
- Limitations acknowledged and unacknowledged
- Implications for [your field]

Prompt 3: Multiple document comparison

I'm uploading 5 documents about [topic]

Legal & Contract Analysis

Prompt 4: Contract review

Review this contract for [type: employment/vendor/lease]

Prompt 5: Legal document comparison

Compare these two contracts:
Document A: [our current agreement]
Document B: [proposed new agreement]

Research & Academic

Prompt 6: Literature review

I'm uploading 20 research papers on [topic]

Prompt 7: Thesis outline

Based on these [X] sources about [topic]

Business Documents

Prompt 8: Annual report analysis

Analyze this annual report for [company]

Prompt 9: Business plan review


Personal Documents

Prompt 10: Email thread analysis


Prompt 11: Meeting transcripts

Analyze these [X]

Technical Documentation

Prompt 12: Codebase documentation

I'm uploading codebase documentation ([X]

Prompt 13: API documentation review


Creative Analysis

Prompt 14: Manuscript feedback

I'm uploading my [novel/memoir] manuscript ([X]

Prompt 15: Screenplay analysis


WRITING & EDITING (15 Prompts)

Professional Writing

Prompt 16: Report writing

Write [type] report on [topic]. Include:
- Executive summary (1 page)
- Background/context
- Analysis/findings (3-5 main points)
- Supporting evidence
- Recommendations (prioritized)
- Next steps with timeline
- Appendices for detailed data

Target: [X] pages. Tone: [professional/technical]. Audience: [who]

Prompt 17: White paper

Create white paper on [topic] for [industry]

Prompt 18: Grant proposal

Draft grant proposal for [project]:
- Project summary (compelling hook)
- Problem statement with data
- Proposed solution and methodology
- Timeline and milestones
- Budget breakdown with justification
- Team qualifications
- Expected impact and metrics
- Sustainability plan

[Funder]

Business Communication

Prompt 19: Investor update

Write monthly investor update:
- Key metrics ([list metrics]

Prompt 20: Board deck

Create board meeting deck outline for [company]

Content Marketing

Prompt 21: Thought leadership article

Write thought leadership article on [topic] for [publication]

Prompt 22: Case study

Write case study for [client]

Academic Writing

Prompt 23: Research paper

Draft research paper on [topic]:
- Abstract (250 words max)
- Introduction with literature review
- Methodology
- Results
- Discussion
- Limitations
- Conclusion and future research
- References (APA format)

[X]

Prompt 24: Literature review section

Write literature review on [topic] using these sources:
[List or attach sources]

Creative Writing

Prompt 25: Story editing

Here's my short story [paste]

Prompt 26: Character development

Develop character for [genre] story:
Name: [if you have one]
Role: [protagonist/antagonist/supporting]

Editing & Improvement

Prompt 27: Improve clarity

Make this clearer without losing meaning:
[Paste text]

Prompt 28: Tone adjustment

Rewrite in [formal/casual/persuasive/empathetic] tone:
[Paste text]

Email & Messages

Prompt 29: Difficult email

Help draft email about [sensitive situation]:
Recipient: [who]
Context: [background]
Goal: [what you want]

Prompt 30: Cold outreach

Write cold email to [type of person]:
Purpose: [what you want]
Why them: [personalization]

RESEARCH & ANALYSIS (15 Prompts)

Competitive Research

Prompt 31: Competitor analysis

Research [competitor company]

Prompt 32: Market analysis

Analyze [industry/market]

Decision Support

Prompt 33: Decision framework

Help me decide: [decision]

Prompt 34: SWOT analysis

SWOT analysis for [company/product/strategy]:

Strengths (internal positives):
- [List 5-7 with evidence]

Weaknesses (internal negatives):
- [List 5-7 honestly]

Opportunities (external positives):
- [List 5-7 realistic ones]

Threats (external negatives):
- [List 5-7 with likelihood]

Data Analysis

Prompt 35: Survey data analysis

I'm uploading survey results ([X]

Prompt 36: Qualitative research analysis

Analyze these [interviews/focus groups]:
[Upload transcripts]

- Themes identification (major and minor)
- Frequency of mentions
- Sentiment analysis
- Quotes supporting each theme
- Contradictions or outliers
- Insights for [product/strategy]

Strategic Planning

Prompt 37: Strategic plan outline

Create 3-year strategic plan for [company]

Prompt 38: OKR development

Develop OKRs (Objectives & Key Results) for [team/company]:

Create 3-5 Objectives (qualitative, aspirational)
For each objective, 3-4 Key Results (quantitative, measurable)

Ensure:
- Ambitious but achievable
- Measurable
- Time-bound (Q[X] 202[X]

Problem Solving

Prompt 39: Root cause analysis

Problem: [describe problem]

Prompt 40: Scenario planning

Scenario planning for [situation]

Learning & Synthesis

Prompt 41: Concept explanation

Explain [complex concept] assuming I'm [your knowledge level]:
- Simple definition (ELI5 first)
- Detailed explanation
- Real-world examples (3+)
- Common misconceptions
- How it relates to [related concept]

Prompt 42: Learning plan

Create learning plan to master [skill/topic]:
Starting level: [beginner/intermediate/advanced]
Goal: [what you want to achieve]
Time: [hours per week]

Synthesis & Summaries

Prompt 43: Executive briefing

Create executive briefing on [topic]

Prompt 44: Meeting notes synthesis

I'm pasting notes from [X]

Prompt 45: Research synthesis

Synthesize findings from these sources on [topic]:
[Attach or list sources]

CODING & TECHNICAL (15 Prompts)

Code Review

Prompt 46: Code review

Review this code:
[Paste code]

Prompt 47: Refactoring suggestions

This code works but is messy:
[Paste code]

Documentation

Prompt 48: Function documentation

Write documentation for this function:
[Paste function]

Include:
- Purpose (what it does)
- Parameters (type, description, default)
- Return value (type, description)
- Exceptions raised
- Usage examples (2-3)
- Edge cases to note
- Performance considerations if any

JSDoc/docstring format for [language]

Prompt 49: README creation

Create README for this project:
[Describe project or paste key files]

Debugging

Prompt 50: Debug help

Getting this error:
[Paste error message]

Here's the relevant code:
[Paste code]

Expected behavior: [what should happen]
Actual behavior: [what is happening]

Prompt 51: Performance optimization

This code is slow:
[Paste code]

Context:
- Input size: [X]
- Current performance: [time/memory]
- Target performance: [desired]

Architecture

Prompt 52: System design

Design system for [application]:

Requirements:
- [List functional requirements]
- Scale: [expected users/data]
- Performance: [latency/throughput]

Prompt 53: Database schema

Design database schema for [application]:

Entities needed:
- [List main entities]

Learning & Explanation

Prompt 54: Code explanation

Explain this code like I'm [beginner/intermediate]:
[Paste code]

- What it does (high-level)
- How it works (step-by-step)
- Why written this way
- Key concepts used
- How to modify for [X]

Prompt 55: Algorithm explanation

Explain [algorithm] algorithm:
- What problem it solves
- How it works (step-by-step)
- Time complexity (Big O)
- Space complexity
- When to use vs not use
- Implementation in [language]

Code Generation

Prompt 56: Boilerplate generation

Generate boilerplate for [type of project]:
Language: [X]
Framework: [Y if applicable]

Prompt 57: Test generation

Generate tests for this code:
[Paste code]

Create:
- Unit tests (test each function)
- Edge cases
- Error cases
- Integration tests if applicable
- Test data/fixtures needed

Use [testing framework]

Migration & Conversion

Prompt 58: Language conversion

Convert this [source language] code to [target language]:
[Paste code]

Maintain:
- Same functionality
- Similar structure where possible
- Idiomatic [target language]

Prompt 59: API migration

Migrate from [old API] to [new API]:

Current implementation:
[Paste code]

New API documentation:
[Link or paste relevant parts]

Prompt 60: Legacy modernization

Modernize this legacy code:
[Paste old code]

Update to:
- Modern [language]

Claude-Specific Tips

Leveraging 1M Context

Best uses:

  • Upload entire codebases (analyze all files at once)

  • Multiple documents comparison (20+ PDFs)

  • Year of emails or messages

  • Full books or manuscripts

  • Complete research paper sets

How to reference: Use @ in conversation to reference specific uploaded files

Multi-Turn Conversations

Claude remembers: Previous messages in conversation

Strategy: Build on previous responses:

  1. Initial analysis

  2. "Now focus on X from above"

  3. "Combine insights from steps 1 and 2"

Requesting Specific Formats

Claude can output:

  • Tables (Markdown)

  • Outlines (hierarchical)

  • Code blocks (with syntax highlighting)

  • Bulleted/numbered lists

  • JSON/CSV/XML

Request format explicitly: "Provide in table format" or "Output as JSON"

Common Mistakes to Avoid

Mistake 1: Too vague ❌ "Analyze this"
✓ "Analyze this contract for unfavorable terms, focusing on liability and termination clauses"

Mistake 2: No context ❌ "Is this good?"
✓ "Review this blog post for [audience]. Should it be more technical or accessible?"

Mistake 3: Expecting mind-reading ❌ "Make it better"
✓ "Make this more persuasive for B2B SaaS buyers. Add data and reduce jargon."

Mistake 4: One-shot instead of iterating Use follow-ups:
"Good start. Now add examples for each point"
"Can you make the tone more formal?"

Frequently Asked Questions

Do these work on free Claude?

Yes. Free tier has Sonnet 4.6 (limited messages). Pro has Opus 4.6 (5x more messages).

How is this different from ChatGPT prompts?

Claude excels at: long documents, thoughtful analysis, quality writing. Use Claude's strengths.

Can Claude handle my 500-page document?

Yes. 1M context = ~2,500 pages. Upload and reference throughout conversation.

Which Claude model should I use?

Sonnet 4.6: Most tasks, fast, free tier
Opus 4.6: Complex analysis, highest quality, Pro only

Can I save good prompts?

Yes. Create document with your best prompts. Refine over time.

Does Claude train on my data?

No if you use "Temporary chat" mode. Check privacy settings.

Related Reading

www.topfreeprompts.com

Access 80,000+ prompts optimized for Claude Opus 4.6 and Sonnet 4.6. Get better results from Claude with proven templates.

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