Counter-Strike 2 — clone it in the browser
Reported by the author — we did not run this. What that means
Output
The prompt that built Counter-Strike 2
Clone the game counter-strike 2. I don't care what technology you use but it needs to work in the browser. Graphics must match and look amazing, gameplay must be the same and I don't care about multiplayer right now
Runs
| Model | Harness | Status | Cost | Duration | Output | Trust | Artifact |
|---|---|---|---|---|---|---|---|
| Fable 5fable-5 | claude-code | Completed | not measured | 1h 44m | not measured | Reported | — |
| GPT-5.6 Solgpt-5-6-sol | — | Completed | not measured | 23m 00s | not measured | Reported | — |
| Grok 4.5grok-4-5 | — | Completed | not measured | not measured | not measured | Reported | — |
| Opus 5claude-opus-5 | — | Completed | not measured | 37h 00m | not measured | Reported | — |
What this is, and what it proves
Two sentences, no spec, no stack imposed: clone CS2 so it runs in a browser. Four models took the same prompt. Fable 5 and GPT-5.6 Sol both produced a playable round with bots and a buy menu; Grok 4.5 shipped an FPS with no minimap, no buy menu and no bomb. Opus 5 ran for 37 hours and added radar, sound, menus and bomb defusal that nobody asked for.
The prompt behind "Counter-Strike 2 — clone it in the browser" is published in full, and was run by 4 models: Fable 5, GPT-5.6 Sol, Grok 4.5 and Opus 5. 4 of 4 finished, on figures reported by the author.
- Models
- 4
- Completed
- 4 of 4
- Cheapest completed run
- not measured
Figures reported by Luke The Dev. Not independently verified.
Reported, not measured
Four runs posted one at a time by the author between 10 and 27 July 2026, each with its own video; the prompt is published verbatim in a reply to the first. Only wall-clock time was stated, and only for three of the four — no tokens and no cost were published, so nothing on this page is a measured figure. The Opus 5 run is the one departure from the single prompt: it froze the author's machine after 18 hours and was restarted, so its 37 hours cover two prompts rather than one. Sources — prompt: https://x.com/iamlukethedev/status/2075431266036732166 · Fable 5: https://x.com/iamlukethedev/status/2075431175321972919 · GPT-5.6 Sol: https://x.com/iamlukethedev/status/2075717940071338181 · Grok 4.5: https://x.com/iamlukethedev/status/2076067349682421878 · Opus 5: https://x.com/iamlukethedev/status/2081829763489169636