Compare what four models cost to one-shot the same dam-break simulation
Same prompt, one shot, four models: Opus 5.5 max spent $55.59 over 2h09m, GPT-6 Astra max $7.48 in 35m, Grok 4.7 xhigh about $5 in 1h35m and Gemini 4 Argon high about $3 in 41m.
Source
@RafaCrackYT on X · 2026-10-17
Written in our own words. Credit to the original author. Link checked 2026-10-22.
What they did
Same prompt, one shot, four models: Opus 5.5 max spent $55.59 over 2h09m, GPT-6 Astra max $7.48 in 35m, Grok 4.7 xhigh about $5 in 1h35m and Gemini 4 Argon high about $3 in 41m.
Result (as claimed)
Opus cost about 7x more than Astra for the same scene.
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; Grok 4.7: from $2 in / $6 out per 1M tokens; Gemini 4 Argon: from $2 in / $10 out per 1M tokens.
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 Claude Opus 5.5 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: Compare what four models cost to one-shot the same dam-break simulation What the original author did: Same prompt, one shot, four models: Opus 5.5 max spent $55.59 over 2h09m, GPT-6 Astra max $7.48 in 35m, Grok 4.7 xhigh about $5 in 1h35m and Gemini 4 Argon high about $3 in 41m. Reported result (as claimed by the author): Opus cost about 7x more than Astra for the same scene. Source: https://x.com/RafaCrackYT/status/2111489648233161115 Tools they used: Claude Opus 5.5, GPT-6 Astra, Grok 4.7, Gemini 4 Argon 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: Compare what four models cost to one-shot the same dam-break simulation What the original author did: Same prompt, one shot, four models: Opus 5.5 max spent $55.59 over 2h09m, GPT-6 Astra max $7.48 in 35m, Grok 4.7 xhigh about $5 in 1h35m and Gemini 4 Argon high about $3 in 41m. Reported result (as claimed by the author): Opus cost about 7x more than Astra for the same scene. Source: https://x.com/RafaCrackYT/status/2111489648233161115 Tools they used: Claude Opus 5.5, GPT-6 Astra, Grok 4.7, Gemini 4 Argon 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: Compare what four models cost to one-shot the same dam-break simulation What the original author did: Same prompt, one shot, four models: Opus 5.5 max spent $55.59 over 2h09m, GPT-6 Astra max $7.48 in 35m, Grok 4.7 xhigh about $5 in 1h35m and Gemini 4 Argon high about $3 in 41m. Reported result (as claimed by the author): Opus cost about 7x more than Astra for the same scene. Source: https://x.com/RafaCrackYT/status/2111489648233161115 Tools they used: Claude Opus 5.5, GPT-6 Astra, Grok 4.7, Gemini 4 Argon 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 build with Gemini 4 Argon and Gemini agents · How to compare AI models on the same prompt
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