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Only Building Copilots! | @codeguidedev

990 following53k followers

The Innovator

CJ Zafir is a hands-on AI tinkerer who’s single-mindedly building copilots and shipping practical tooling for devs. Fast, opinionated, and relentlessly experimental, CJ turns daily AI work into repeatable projects and strong takes. If it helps you build faster, CJ has already tested it, probably on a Raspberry Pi.

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CJ treats every AI model like a toolbox: if it can’t tighten a bolt, he calls it "fluff" and moves on, which is fair, assuming "fluff" is ready for deployment and not just another Discord thread of optimism. Also, if his laptop had feelings, it would file a restraining order for being forced to run so many experimental models.

Turning a concise, definitive thread about must-know AI models into a 5.57M-view moment that positioned CJ as a go-to curator for builders, plus shipping 36 projects in a year that prove his advice isn’t just hot takes but production-tested reality.

To accelerate developer productivity by creating and popularizing practical, battle-tested copilots and AI workflows, turning cutting-edge model research into tools developers actually use. CJ’s mission is to make smart, usable AI tooling the default for everyday coding.

Values pragmatism over hype, open experimentation, and shipping working prototypes. Believes in hands-on learning, transparent sharing (open source and demos), and ruthless signal detection, if it doesn’t help you build, it’s probably fluff.

Hyper-experimental builder with high technical credibility and a knack for clear, opinionated curation. Can turn complex model differences into simple, actionable stacks; strong viral reach and an audience that trusts his hands-on results.

Can come off blunt or dismissive when calling things "fluff," which risks alienating more cautious or theoretical followers. High output and rapid experimentation can also mean unfinished threads or fragmented long-form explanations.

On X, anchor your authority with a pinned, evergreen thread: "The Copilot Stack, How I build in 2026" (include repo links, demos, and short video clips). Post regular mini-demos (15, 30s) showing copilots in action, convert deep threads into bite-sized tutorials, run periodic AMAs/Spaces after major releases, and collaborate with complementary creators (product folks, infra devs) to cross-pollinate audiences. Use consistent hashtags (#CopilotBuilds, #AIforDev) and retweet community builds that use your tools to create social proof.

Codes with AI 6, 7 hours daily and shipped 36 projects in the last 12 months; runs and showcases models on everything from self-hosted servers to mobile phones and Raspberry Pi. Bio: "Only Building Copilots! | @codeguidedev" and a top viral thread listing the AI models people should care about (5.57M views).

Top tweets of CJ Zafir

If you're using Deepseek r1, Try this *PPFO* Prompting Framework We achieved o1 level response quality in @CodeGuidedev and reduced API cost by 50% Tips: - Use XML tags instead of Markdown - No bullet points in purpose and output sections - Provide as much detail as possible

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Cursor Agent is just wild. Now i use Gemini PRO 2.5 to scan the codebase and sonnet 3.5/3.7 to execute code. In this workflow you need 3 things: 1. Detailed project documentation 2. Use multiple AI coding models 3. 50-step implementation plan I spend 30 hours/week on cursor. I've found out the best cursor practices and the workflow. I attached the best practices below and here's the best workflow. Your project docs (PRD, Tech stack & APIs doc, app flow doc stec) works like a knowledge base for AI models. If AI models find all necessary information within the knowledge base, they don't hallucinate, assume things and don't ruin the codebase. So must add project docs in your root directory. Ideal place is add them under project rules (.cursor/rules) Then you need to use multiple AI models. Now I am using Gemini PRO 2.5 to scan the entire codebase (cus it has 1M context) and find errors or update docs. And I use Sonnet 3.5 to execute code. If it's a bit complex step then I also use Sonnet 3.7. Sometimes I also use GPT o1 model to debug but rarely (mostly done by Gemini pro 2.5) So 2.5 to scan, update, and 3.5/3.7 to execute. Each model has its superpowers. We need to maximize those. Lastly, you need to write an end-to-end plan to code your app. I call it "implementation plan." This implementation plan works as a blueprint for Cursor Agent and it just follows the tasks and executes those. I use @CodeGuidedev to generate coding docs + it provides 50-step implementation plan to code the entire app. Now it also supports MCPs. Imagine Cursor using Supabase MCP to create database tables, and add policies autonomously. It just saves so much time. So wrap up of the workflow is: Attach your coding docs + use multiple AI models in your flow + have a solid 50-step implementation plan. And you'll see how powerful Cursor Agent is. I hope this'll refine your Cursor coding workflow. Let me know your findings.

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Most engaged tweets of CJ Zafir

After spending 500+ hours on ChatGPT, I can share 1 Ultimate Prompt Engineering Secret with you. Yes, for Free. You don't need any more prompt templates after this one! So here it is! 1st Step: Give it a role. "You are Spartacus, a pro copywriter," 2nd Step: Define its job "Your job is to write copy for online media brands" Third step: Give ChatGPT the control: "Now ask me all the questions that you need to know to write a perfect copy that'd align with my brand." **What you did here is rather than you figuring out the perfect prompt and context, you asked ChatGPT to do the hard work. Now it will give you 8-10 Questions, answer them in detail. By doing so, you are giving ChatGPT some data to be trained on. That's the trick. Now, to make it even better do this. 4th step: Define input: "Users will ask you to write copy for their business, brand, or anything else. It's your job to ask questions first to clarify the task and then implement the copywriting process. " Step 5: Define output: "You need to write in ______ style, start with the headline as a hook, write only ______ words per copy, make the copy persuasive, and use simple language" Step 6: Share 3-5 examples of inputs and outputs. That's it. Your ultimate prompt is ready. Here's how it looks. 1. Role 2. Job 3. Paste all question answers as context 4. Define input 5. Define output 6. Share 3-5 examples Now you'll get 50x better results. 80% of AI tools are built on this prompting technique. Thank me later.

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After Spending 713 hours on ChatGPT. Finally, I am sharing with you... Xinstein - My Researcher & Explainer Agent. How I turned ChatGPT into the best Explainer & Research AI Agent? ChatGPT + 2 Plugins = {Xinstein} → Best Researcher Agent This is what it does for me, from just ONE Prompt: ✦ It searches the internet ✦ It summarizes the collected data. ✦ It creates mindmaps, and 3 other diagrams ✦ It shares Analogies and Metaphors to explain better. ✦ It uses simplest language that a 5th-grade student use. Now I don't search the web for hours. ChatGPT does it for me. Bookmark this Article and Copy this Method. Step 1: Install these 2 Plugins in ChatGPT: ✦ "VoxScript" ✦ "Whimsical Diagrams" Step 2: Paste this Research Agent Prompt in ChatGPT: "Your Role: You're Xinstein - the Best Research & Explainer Agent on Planet Earth. Your Job: Explain in every possible way to make it easy to understand. Your Motive: Give the learner "aha" moment on every he needs to understand. You can do this with the art of explaining things. Learner's introduction: The learner knows nothing! He's a complete beginner. He only understands simple language with no jargon and heavy grammar. He loves to visualize concepts, it makes him understand better. Your Method: Step 1: Search the internet for the latest information on . Find the most relatable information about the . Step 2: Summarize all pieces of content you found, separately. When summarizing, write the most important points you found in the content. Note: Most important in the sense that this information will help the learner to understand the "what is this ?" Don't pick the same information from all summaries. Always find something new in the next summary. Write detailed summaries, 500 words minimum And make summaries super valuable. Step 3: Use "Explain in a 5th Grade student language" method to simplify the concept first. Step 4: Explain the full concept in step by step manner. Use simple language. Step 5: Use the "whimsical diagrams" plugin to design the diagrams to explain the concept. It will help the reader to understand better. Note: Visual representation includes mindmap, Use Case Diagram, Process flow diagram and Data-flow diagram. Generate all 4 diagrams. Step 6: Share 1 most realistic analogy and 2 Metaphors to explain the concept. Step 7: Share key Takeaways of the Rules: 1. I know you have token limitations, so don't skip any steps and don't find shortcuts. When you're about to hit your token limit. Ask me to press "continue" and I'll do that so you can complete all steps. 2. Start with introducing yourself first, then ask "What's the Topic you want to understand?" And the user will share the topic. Do you understand?" --- Next, It will ask you what topic you want to understand? Just type the topic like: What is DALL-E 3? or LIaMa 2? Then, Wait for the magic. It will share all the basic information you need to understand any topic, Just try it and Thank me later. 🙏 I could've made this a Giveaway (autoDM) post but that's just not me. I want to share immense value here on this AI Samurai Brand. + I will be posting 1 Agent every day for next 10 days. If you haven't followed me @cj_zZZz do so, and you won't miss free value every day. I have an exciting announcement coming up. Stay tuned for that. 🚀 Share this Agent with your community to make their research super efficient. CJ

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Here's my AI tools cost right now: ✅️ Claude AI → $20 ✅️ ChatGPT → $20 ✅️ Bolt .new → $100 ✅️ Cursor AI → $20 ✅️ Gpt4o API → $110 ✅️ Claude API → $135 ✅️ Replit → $20 Unsubscribed: ❌️ v0 → $20 ❌️ Perplexity → $20 Looking into: 🟡 Lovable 🟡 Windsurf I use Claude × Cursor most of the time. But here's a breakdown: - For frontend components, I was using v0, and it was perfect (before v0 became full stack) Now it's not even 20% efficient. So, I had to unsubscribe. Now I am using bolt for that purpose. Bolt is super expensive. I think they need to cut cost by atleast 50% otherwise devs won't use it for production. Lovable is emerging as a great v0 replacement. I tested it few times and got good results. - For IDE, I am using Cursor AI from the start, but I see a cult community of Windsurf. I wonder why? Maybe the product has improved from when I tested 3 weeks back. So I'll check Windsurf and compare it with Cursor. Cursor Agent is amazing, but it's like a double-edged sword. If you don't have crystal clear instructions, it'll overkill your project. Proper Documentation + structured .cursorrules file is a must with Cursor Agent. - I use Claude and GPT-4o API in my products that this cost is from API usage. It will increase with time. - After the launch of ChatGPT search, I have a widget on my homescreen. I get same results as what I was getting from perplexity. And Perplexity gives you 3 pro searches per day. Which is enough if you want to compare anything. I don't remember when I used Google search last time. - I am not using Replit Agent much. I think Replit is the most overcooked AI product. Unnecessarily slow and overwhelming. I just use it to connect to cursor and test deployment quickly. Is there any tool that I am missing? That can help me code fast. I am coding 1 web app/a week. Production ready web app. ✅️ Fully responsive frontend ✅️ Backend integrated properly ✅️ Auth done ✅️ Testing done ✅️ Landing page When I look back, I get amazed at how I was building products just 3 months back. 2 months in development, super slow process, lazy devs, no control. Now, with Army of AI Agents and lean team. Tables are turned. And it is about to get crazy in few months. AI agents will be coding end to end products, and smart brains will be selling/renting these AI agents to companies. Anyways, that's my tool stack for now. Let me know what tools you are using in your workflow. Peace CJ

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