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 4m 08sCost $0.64 estimated
Review
No verdict yet.
The full review
OK. Finished on its own after 4.1 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 Harness-config failure (ours)15m 22s$0.702026-09-30
- Attempt 2 OK this run4m 08s$0.642026-09-30
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, 909 characters. Every result for this prompt
Build a single-page Three.js scene (one index.html file, no build step, three.js from a pinned CDN) with a rigged humanoid character (a procedural skeleton and simple body meshes are fine) that plays walk, run and jump cycles, with on-screen buttons or keys to switch between them and blend smoothly from one to the next. The motion must look human, not spider-like: respect realistic joint limits (knees and elbows bend one way only, no joint rotates past a human range), feet plant on the ground with no sliding while in contact, the pelvis bobs and the torso stays upright with natural counter-rotation of shoulders and hips, and arms swing opposite to the legs. Include a ground grid, an orbit camera and a toggle that shows the skeleton. It must run at 60 fps in a desktop browser and work with touch. Write everything into the working directory and finish with a short README.md describing the controls.
How it was made
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 5 steps
Loading the timeline…
Download the full transcript Claude Code session JSONL, 215 KB. 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 $0.64, estimated from the token counts at list price.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 8 | $4.00 | $0.0000 |
| Cache write | 28,907 | $5.00 | $0.1445 |
| Cache read | 159,182 | $0.20 | $0.0318 |
| Output | 23,425 | $20.00 | $0.4685 |
| of which reasoning | 13,342 | billed as output |
- Total computed from tokens
- $0.6449
- 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/humanoid_motion_cycle.md verbatim (written 2026-09-30 from a public X post GPT-6 Sol human motion looks spider-like)
- 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: none