Have Codex check the work Claude Code did, both run from your Grok Bot
One model builds, a different one reviews, because an AI checking its own work shares the blind spots that caused the mistake. Kacper Rutkowski tried it on his booking site: Codex found 3 problems that would have stopped people booking and fixed them in about a minute.
Source
@GrokBotRadar on X · 2026-10-20
Written in our own words. Credit to the original author. Link checked 2026-10-23.
What they did
One model builds, a different one reviews, because an AI checking its own work shares the blind spots that caused the mistake. Kacper Rutkowski tried it on his booking site: Codex found 3 problems that would have stopped people booking and fixed them in about a minute.
Result (as claimed)
His Grok Bot usage held at 44% because the coding ran on the Claude Code and Codex plans.
Tools they used
Cost: Grok Bot: from $30/mo; Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/mo.
Set it up
Write a one-page brief
Describe the app in plain words: who it is for, the 3 core screens or actions, and what "done" looks like.
Start the project with your agent
Open Grok Bot and paste the brief. Ask it to propose a stack and a file plan before writing code.
Build one slice at a time
Ship the smallest working flow first, run it, then add features one by one. Commit after each working step.
Test it like a user
Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.
Check security and ship
Keep keys in environment variables, check auth and database rules, then deploy and share the link.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Have Codex check the work Claude Code did, both run from your Grok Bot What the original author did: One model builds, a different one reviews, because an AI checking its own work shares the blind spots that caused the mistake. Kacper Rutkowski tried it on his booking site: Codex found 3 problems that would have stopped people booking and fixed them in about a minute. Reported result (as claimed by the author): His Grok Bot usage held at 44% because the coding ran on the Claude Code and Codex plans. Source: https://x.com/GrokBotRadar/status/2112470406078902450 Tools they used: Grok Bot, Claude Code, OpenAI Codex Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Have Codex check the work Claude Code did, both run from your Grok Bot What the original author did: One model builds, a different one reviews, because an AI checking its own work shares the blind spots that caused the mistake. Kacper Rutkowski tried it on his booking site: Codex found 3 problems that would have stopped people booking and fixed them in about a minute. Reported result (as claimed by the author): His Grok Bot usage held at 44% because the coding ran on the Claude Code and Codex plans. Source: https://x.com/GrokBotRadar/status/2112470406078902450 Tools they used: Grok Bot, Claude Code, OpenAI Codex Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Have Codex check the work Claude Code did, both run from your Grok Bot What the original author did: One model builds, a different one reviews, because an AI checking its own work shares the blind spots that caused the mistake. Kacper Rutkowski tried it on his booking site: Codex found 3 problems that would have stopped people booking and fixed them in about a minute. Reported result (as claimed by the author): His Grok Bot usage held at 44% because the coding ran on the Claude Code and Codex plans. Source: https://x.com/GrokBotRadar/status/2112470406078902450 Tools they used: Grok Bot, Claude Code, OpenAI Codex Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to set up Grok Bot agents for real work · How to vibe code an app with Claude Code · How to use Claude Code and Codex together · How to compare AI models on the same prompt
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