Claude Opus 5.5 in Claude Code 2.1.280
skills off
Zoom, inline player and more ways to view
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).
Wall time 37m 09sCost $5.07 estimated
Review
No verdict yet.
The full review
OK. Finished on its own after 37.2 min.
Attempt 2 of 2
Every try of this model in this harness on this prompt, oldest first. This run is the cell's result.
- Attempt 1 OK2m 39s$0.612026-09-30
- Attempt 2 OK this run37m 09s$5.072026-09-30
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, 971 characters. Every result for this prompt
Design a giant desert sandworm re-engineered as a robot, presented as an engineering blueprint. Deliver ONE self-contained index.html (SVG and/or canvas, inline CSS and JS, no external assets, libraries or fonts). It must include: an animated robotic worm that moves through sand, with segments that articulate as it burrows and surfaces; a labelled segment-by-segment mechanical breakdown (for example head and mouth assembly, drive segments, sensor ring, power core, tail) with callouts naming each part and what it does; a cross-section diagram of the mouth showing the grinding and intake mechanism; and a terrain and operations map showing the worm's route, depth and working zones. Everything must share one cohesive blueprint style: blueprint-blue background, white and cyan line work, grid, dimension lines, title block and technical lettering. It must look good on desktop and phone. Write everything into the working directory and finish with a short README.md.
How it was made
Versions saved during the run
6 intermediate outputs, in the order the model wrote them.
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 transcript is 11.5 MB; it is published as a scrubbed, compressed download rather than shown on the page.
Show all 41 steps
Loading the timeline…
Download the full transcript Claude Code session JSONL, 145 KB, gzip. 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 $5.07, estimated from the token counts at list price.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 52 | $4.00 | $0.0002 |
| Cache write | 335,556 | $5.00 | $1.6778 |
| Cache read | 3,685,929 | $0.20 | $0.7372 |
| Output | 132,570 | $20.00 | $2.6514 |
| of which reasoning | 72,225 | billed as output |
- Total computed from tokens
- $5.0666
- 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
- frozen prompt (written): prompts/creature_robot_blueprint.md verbatim (written 2026-09-30 from a public X post Opus 5.5 sandworm-as-robot blueprint)
- 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