Real AI agent use cases, with sources and setup prompts

Compare four AI models by asking each to build the same machine

One prompt, build a radial engine, went to Claude Opus 5.5, GPT-6 Astra, Gemini 4 Argon and Grok 4.7. Each built a different machine, which shows how differently the models interpret the same words.

$4 in / $20 out per 1M tokens1 hourBeginnerSource linked

Source

@kinderlayer on X · 2026-10-16

Written in our own words. Credit to the original author. Link checked 2026-10-17.

What they did

One prompt, build a radial engine, went to Claude Opus 5.5, GPT-6 Astra, Gemini 4 Argon and Grok 4.7. Each built a different machine, which shows how differently the models interpret the same words.

Result (as claimed)

101 likes on X.

Tools they used

Cost: Claude Opus 5.5: from $4 in / $20 out per 1M tokens; GPT-6 Astra: from $10 in / $50 out per 1M tokens; Gemini 4 Argon: from $2 in / $10 out per 1M tokens; Grok 4.7: from $2 in / $6 out per 1M tokens.

Set it up

  1. Gather your sources

    Collect the papers, notes, links or files you want to work from in one place.

  2. Load them into the tool

    Open Claude Opus 5.5, GPT-6 Astra, Gemini 4 Argon, Grok 4.7 and add your sources. Keep the original files so you can check claims later.

  3. Ask focused questions

    Ask for summaries, comparisons or connections with citations to the source passages.

  4. Verify and save

    Spot check claims against the sources, then save the output as notes you can reuse.

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: Compare four AI models by asking each to build the same machine
What the original author did: One prompt, build a radial engine, went to Claude Opus 5.5, GPT-6 Astra, Gemini 4 Argon and Grok 4.7. Each built a different machine, which shows how differently the models interpret the same words.
Reported result (as claimed by the author): 101 likes on X.
Source: https://x.com/kinderlayer/status/2111089884463030449
Tools they used: Claude Opus 5.5, GPT-6 Astra, Gemini 4 Argon, Grok 4.7
Category: Research & learning

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 build with Gemini 4 Argon and Gemini agents ยท How to compare AI models on the same prompt

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