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Claude Opus 5.5 in Claude Code 2.1.280

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Claude Opus 5.5: Dragon ship

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The model's own page, run in a sandboxed frame only when you ask (a page that needs its own origin opens in a new tab on a separate demo site). Phones get a full-screen player capped at 1.5x pixel density (2x on larger screens) so it stays smooth; the original page runs uncapped. It starts in its auto-tour (T switches to play mode on a keyboard).

Did not settle in our check.

OKDragon shipmax effortHome harness

Wall time 2h 00mCost $13.87 estimated

Review

No verdict yet.

The full review

OK. Finished on its own after 120.2 min.

Scores

AI judge

Not scored

No rubric for this prompt

Visitor votes and reviewer grades are not available yet.

AI judge
AI judge: the test runner (model claude-opus-5-5), scoring by visual review of the 1600 px render against the pre-registered rubric. No AI-judge score exists for this result: there is no rubric for this prompt, so no score is shown and none is made up.
Visitors
Public voting with a blind reveal is coming: you score the output first, then see the other scores.
Reviewer
The reviewer's own grade appears here once it is added.

Scores compare results for the same prompt only. AI-judge boards rank runs within one prompt, equal totals sharing a rank; scores from different prompts are never averaged.

Downloads

Files actually published for this run. Original output, site-made previews and post-run conversions are labelled separately.

The exact prompt

as run, 1,421 characters. Every result for this prompt

Build a single self-contained Three.js scene of a fantasy sailing ship at sea, seen from a cinematic three-quarter view. The ship has a carved dragon figurehead at the bow with an open jaw and horns, a wooden hull with visible planking and a raised stern castle, three masts with full canvas sails that billow and a few pennants, rigging lines, and lanterns along the rail. It sails on animated water with rolling waves, foam at the bow, reflections and a sun path on the surface. Behind it a rocky coast with a small harbour town: stone houses with tiled roofs, a lighthouse, a pier and scattered trees on green hills. Warm late-afternoon lighting with a low sun, long shadows, light haze in the distance and a sky with a few clouds. The camera slowly orbits the ship. Everything is built in code from Three.js geometry and materials; no external models or textures.

Output ONLY the complete index.html, starting with <!DOCTYPE html> and ending with </html>, with no explanation and no markdown fences. Build it as index.html (plus any local asset files you create) in the current directory. Three.js may load from a pinned CDN. You may serve it locally and open it in headless chromium (/usr/bin/chromium, software WebGL, no GPU) to screenshot and inspect your own output, and iterate on your own until it looks genuinely cinematic before finishing. Close any browser you open as soon as you've taken your screenshot.

How it was made

Wall time 2h 00mFirst artifact at 52m 53s13 saved versions

Versions saved during the run

13 intermediate outputs, in the order the model wrote them.

Version 14 of 13
  1. Version 1 at 52m 55s thumbnailv1 52:55
  2. Version 2 at 55m 20s thumbnailv2 55:20
  3. Version 3 at 58m 18s thumbnailv3 58:18
  4. Version 4 at 1h 05m thumbnailv4 1:05:25
  5. Version 5 at 1h 08m thumbnailv5 1:08:32
  6. Version 6 at 1h 10m thumbnailv6 1:10:25
  7. Version 7 at 1h 12m thumbnailv7 1:12:27
  8. Version 8 at 1h 17m thumbnailv8 1:17:08
  9. Version 10 at 1h 25m thumbnailv10 1:25:29
  10. Version 11 at 1h 30m thumbnailv11 1:30:47
  11. Version 12 at 1h 32m thumbnailv12 1:32:05
  12. Version 13 at 1h 34m thumbnailv13 1:34:28
  13. Version 14 at 1h 36m thumbnailv14 1:36:06

Step by step

The prompt, every agent turn and tool call (tool name and a one-line summary; inputs and outputs are not shown), then the final message. The full machine-format transcript is published as a scrubbed download.

Show all 103 steps

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Download the full transcript Claude Code session JSONL, 1.3 MB. Scrubbed: anything that looks like a key, token, e-mail address or phone number is replaced, and account details and the test machine's file paths are removed.

Cost breakdown

Headline cost $13.87, estimated from the token counts at list price.

Tokens by typeTokens$ per 1MCost
Input (uncached)152$4.00$0.0006
Cache write391,116$5.00$1.9556
Cache read19,322,644$0.20$3.8645
Output402,542$20.00$8.0508
of which reasoning299,073billed as output
Total computed from tokens
$13.87
Total reported by the harness
none

Computed from harness-reported token counts x list prices.

Prices: Project price table (vendor list prices), 2026-09-22.

Run notes

one prompt, agentic harness (self-review allowed)prompt rewritten after the 2026-09-24 box lossPrompt technique A/B: self-scoring loop (idea from @MengTo, claims unverified; prompt written by us)A/B test None: variant A (2 scripted user turns on the None prompt), paired with threejs_dragon_ship__claude-code__claude-opus-5-5

  • frozen prompt (rewritten): threejs_dragon_ship_a_plain.txt: rewritten, original NOT_RECOVERED
  • plain wave-1-equivalent cc_config copy (settings.json + .claude.json; no ECC files)
  • Mode: interactive TUI in tmux (160x48), inside bubblewrap sandbox
  • Context setting: 1M ([1m] model name)
  • Isolation audit: outside paths seen