Claude vs ChatGPT for editing resume

between Claude AI or ChatGPT which do you think would be best at processing, fixing, modifying, simplifying my long work resume? I am a subscriber to both LLMs

Leo AI said:
Claude AI is better suited for processing, fixing, modifying, and simplifying your long work resume. 

• Long-Context Processing: Claude’s 200,000-token context window (up to 1 million for enterprise) allows it to read and analyze entire long resumes and job descriptions without losing track of details—critical for maintaining consistency across sections. 
• Document Analysis: You can upload your resume as a PDF or text file, and Claude will process it holistically, identifying redundancies, inconsistent formatting, and structural issues—something ChatGPT struggles with due to its lower context limit and lack of file upload integration. 
• Precision & Clarity: Claude excels at rewriting for clarity and impact, producing clean, professional, and authentic-sounding content.  It avoids overused buzzwords and maintains a natural tone, which helps your resume pass both ATS (Applicant Tracking Systems) and human review.
• Advanced Insights: In real tests, Claude has identified hidden issues like messy PDF code that can break ATS parsing—something no other general AI has matched. 
• Resume-Specific Strengths: While ChatGPT is strong for brainstorming and creative phrasing, Claude consistently outperforms in resume tailoring, keyword integration, and strategic rewrites without inventing facts. 

✅ Recommendation: Use Claude to process and refine your long resume.  Upload your file, prompt it to “Rewrite this resume for clarity, conciseness, and ATS optimization,” and review the output. Then, use ChatGPT to brainstorm alternative phrasings or generate a cover letter.

You said:
Ok, I will use Claude AI. But should I use Claud's Haiku, Sonnet, or Opus?

Leo AI said:
For Resume Editing: Use Claude Opus

• Opus is the most powerful and detailed model, best for complex tasks like refining a long resume. It handles nuance, context, and strategic rewriting with high accuracy—ideal for ensuring consistency, tone, and impact across your entire document.
• Sonnet is a strong, balanced choice for general edits and quicker iterations. Use it for moderate improvements when speed matters more than deep analysis.
• Haiku is the fastest but least capable for nuanced work. It’s suited for quick fixes or summarizing, not comprehensive resume optimization.

✅ Recommendation: Start with Opus to deeply process and enhance your resume. Use Sonnet for follow-up edits or iterative tweaks. Save Haiku for simple tasks like shortening bullet points.

You said:
My resume is in a txt file, should I send the file to Opus, or just copy paste it? What should I say to Claude Opus when I do this?

Leo AI said:
Upload the .txt File to Claude Opus

• Uploading the file is better than copy-pasting. Claude automatically wraps uploaded files in optimized XML tags, improving how it processes and attends to your resume content.
• When you upload a .txt file, Claude treats it as a structured document, reducing confusion between your resume text and your prompts—especially important in long or complex interactions.
• Copy-pasting long text is functionally similar, as Claude automatically converts large pastes into a file-like format, but uploading ensures clean separation and proper indexing.

What to Say to Claude Opus

After uploading your resume, say:

"I’ve attached my resume in a text file. Please analyze it for clarity, conciseness, and ATS compatibility. Suggest improvements to simplify and strengthen the content, focusing on impact, keyword optimization, and readability."

You said to Claude Opus:

I was told that my resume is outdated and causes reading fatigue with excess narrative. My old resume is attached to this project. Please analyze it for clarity, conciseness, and ATS compatibility. Suggest improvements to simplify and strengthen the content, focusing on impact, keyword optimization, and readability.

You will notice that there not any recent employment since 2022 So, I guess somewhere in here we just need to mention that I have been working as a delivery driver for the various apps, and lately mostly Uber Eats up until now.

I'm 49 years old, and it may be appropriate to include this particular version the resume that I'm submitting to an employer today.

I'll want a txt and pdf version of my resume. For the job I'm applying for today, I want a short resume that will fit on one page.

The contact information and my current city of residence has been updated and is correct.

Also mention in the resume that I'm learning the Python programming language and I'm increasingly becoming effective at using AI to solve complex problems. You can mention my two web based projects I'm working on as a hobby. Implemented in Python with the assistance of AI. These projects are "Sports Aspects" and "My Conversations with AI" https://sportsaspects.com/ https://myconversationswith.ai/ https://myconversationswithai.org/ (launching soon)

Claude Opus said:
I'll analyze your resume and create a streamlined one-page version. Let me first read the relevant skills for creating professional documents.
Analyzed resume gaps and strategized modernization with technical skills integration.
Diagnosed resume flaws and strategized streamlined, ATS-optimized one-page redesign.

Now let me create a streamlined one-page resume for you. Based on my analysis, here are the key issues with your old resume:

Problems identified:

1. Excessive narrative - Personal stories (art collecting, poker years, company disputes) add reading fatigue
2. Too long - Over 2,500 words; a one-page resume should be ~400-500 words
3. Not ATS-friendly - Lacks clean formatting and keyword optimization
4. Missing recent work - No employment since 2022
5. Irrelevant details - Hobbies section and personal philosophy don't belong on a short resume

Let me create a focused, one-page version:
Creating a streamlined one-page resume in text:
Now let me create the PDF version:
Synthesized resume revisions across multiple formats.

Here are your streamlined one-page resumes. Here's what I changed:

Key Improvements:

What was added:

• Delivery driver experience (2023-Present) with your 700+ deliveries mentioned
• Python programming and AI skills in the summary and skills section
• Your two web projects (Sports Aspects and My Conversations with AI)

What was cut:

• All personal stories (the painting, poker years, company disputes, etc.)
• Hobbies section
• Expired certifications detail (kept as "Former CCNA, CWNA")
• Jobs from the 1990s-2000s that aren't relevant
• The lengthy narrative introduction

Chronological order note: I listed your Afghanistan IT Technician role (2015-2016) after Airbus (2013-2015) since it's actually more recent — the original had them out of order.

When you're ready for the medium or long versions, just let me know. The medium version could include more detail on your STS International role and some additional context, while the long version could be a 2-page comprehensive resume with expanded project descriptions.

You said:
Actually we need to add/change minor things.
I have done over 6000 deliveries. I actually started delivering since 2020
So, that should say 2020 - Present
It's fine if the dates working delivery and Crusoe over lap on this.
In the PDF version, this addition below shall be a sub-bullet:
Directly below My Conversations with AI, put exactly:
www.myconversationswith.ai (blog style version)

Claude Opus said:
Done! Here's what was updated:

• Delivery Driver: Changed to "2020 - Present" with "6,000+ deliveries"
• Projects section: Added sub-bullet "www.myconversationswith.ai (blog style version)" under My Conversations with AI

The overlapping dates with Crusoe (Mar-Nov 2022) are fine — it's common for people to have side gigs alongside main employment.