Claude Fable 5.1 in a raw API call
raw API baseline
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. Tap inside for sound.
The model's code errors on load: Failed to execute 'createRadialGradient' on 'CanvasRenderingContext2D': The r0 provided is less than 0.
Wall time 3m 43sCost $1.02 estimated
Review
No verdict yet.
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, 806 characters. Every result for this prompt
Snake Reimagined: A modern snake game on a 24x24 grid with smooth interpolated movement, a gradient body that tapers to the tail, food that pulses, and walls that wrap. Speed increases every five apples. Show score and best score (saved in localStorage) and support arrows, WASD and swipe. Build it as ONE self-contained HTML file: inline CSS and JavaScript only, no libraries or frameworks, and no external requests of any kind (no CDNs, web fonts, images or audio files); anything visual or audible is made in code (HTML/CSS, SVG, Canvas, WebGL or WebAudio). It must work when opened directly from disk, fit the browser window responsively, and run without console errors. Output ONLY the complete HTML file, starting with <!DOCTYPE html> and ending with </html>, with no explanation or markdown fences.
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 2 steps
Loading the timeline…
Download the full transcript raw API response, 21 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 $1.02, estimated from the token counts at list price.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 294 | $10.00 | $0.0029 |
| Cache write | 0 | $12.50 | $0 |
| Cache read | 0 | $0.25 | $0 |
| Output | 20,347 | $50.00 | $1.0173 |
- Total computed from tokens
- $1.0203
- Total reported by the harness
- none
No cost.json: computed by ingest from the token counts in meta.json x list price.
Prices: Project price table (vendor list prices), 2026-09-22.