Halo — Blood Gulch 5v5 in the browser
A Halo 1 clone playable in a browser: Blood Gulch, 5v5 team deathmatch against the author's own audience, with netcode, matchmaking, leaderboards and in-game chat. The same author built it twice, a week apart, with two different models, and served both from the same site. He never published the prompt, so what you can compare here is the result, not the instruction.
"Halo — Blood Gulch 5v5 in the browser" is one prompt run by 2 models: Qwen 3.8 Max and Opus 5. 2 of 2 finished, on figures reported by the author.
- Models
- 2
- Completed
- 2 of 2
- Cheapest completed run
- not measured
Figures reported by Max Blade. Not independently verified.
Numbers on this page were reported by the author. We did not run this comparison and cannot verify them.
Two posts by the same author: Qwen 3.8 Max on 21 July 2026 (https://x.com/_MaxBlade/status/2079518243622896116) and Opus 5 on 27 July 2026 (https://x.com/_MaxBlade/status/2081841033093026265). The prompt was never published — it was asked for in the thread and not answered — so this is a comparison of two builds of the same brief, not a verified same-prompt run, and no hash is recorded. Neither post gives tokens or cost; the author says the Qwen build ran inside a $6/month subscription, which is not an API-equivalent figure and is left out of the table rather than guessed at. Both clips come from the author's own screen captures of qwensurfers.com, cropped to remove the browser chrome, over the same map; his facecam and burnt-in captions are in the source and could not be removed without cutting into the game. He states the Qwen build was well short of the Opus one.
Output
Runs
| Model | Harness | Status | Cost | Duration | Output | Trust | Artifact |
|---|---|---|---|---|---|---|---|
| Qwen 3.8 Maxqwen3-8-max | — | Completed | not measured | not measured | not measured | Reported | — |
| Opus 5claude-opus-5 | — | Completed | not measured | 12h 00m | not measured | Reported | — |