Claude Fable 5.1 in Claude Code 2.1.280
skills off
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Wall time 14m 40sCost $4.18 reported8.5/10 · Draft score — AI judge
Review
A charming crested pelican on a blue bike on a road with speed lines. Fable at max finished cleanly this time (no stream drop, with thinking summaries on). The bike geometry is a bit off and the wing doesn't reach the bars.
Verdict by the AI judge (provisional).
The full review
OK. Finished on its own after 14.7 min and produced pelican.svg.
Bugs
- Bike frame proportions off (short head tube, tiny handlebar)
- Wing floats instead of steering; only one leg clearly on a pedal
Scores
AI judge
8.5/10
Draft score — AI judge
Visitor votes and reviewer grades are not available yet.
| Criterion | Marks |
|---|---|
| pelican | 2 |
| bicycle | 1.5 |
| riding | 1.5 |
| composition | 2 |
| craft | 1.5 |
| Total (sum of the marks) | 8.5 / 10 |
- 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. A draft score until the reviewer checks it. Rubric: Wave-1 SVG scoring rubric (AI Model Reviewer).
- 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
agentic harness (save the file; self-render allowed), 234 characters. Every result for this prompt
Generate an SVG of a pelican riding a bicycle. Save it as pelican.svg in the current directory. You may render and inspect your own output (headless chromium is available at /usr/bin/chromium) and iterate on your own before finishing.
How it was made
Versions saved during the run
5 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 3.2 MB; it is published as a scrubbed, compressed download rather than shown on the page.
Show all 25 steps
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Download the full transcript Claude Code session JSONL, 65 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 $4.18, as reported by Claude Code (its own bill for the run). The list-price estimate from the token counts is $4.17.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 578 | $10.00 | $0.0058 |
| Cache write | 74,830 | $12.50 | $0.9354 |
| Cache read | 1,319,402 | $0.25 | $0.3298 |
| Output | 57,943 | $50.00 | $2.8971 |
| of which reasoning | not recorded | billed as output |
- Total computed from tokens
- $4.1682
- Total reported by the harness
- $4.1800
- Difference
- computed $4.17 vs reported $4.18 (diff -0.01)
Tokens summed from the Claude Code session JSONL (per message id, incl. subagent files); harness total from /cost.
Prices: Project price table (vendor list prices); cache write 1.25x input, 2026-09-22.
Run notes
- a well-known benchmark wording "Generate an SVG of a pelican riding a bicycle" (a full stop added before the harness suffix).
- Mode: interactive TUI in tmux (160x48), inside bubblewrap sandbox
- Isolation: bwrap: private /tmp, HOME and TMPDIR inside run dir, own CLAUDE_CONFIG_DIR/CODEX_HOME copy; the project files, other runs, /tmp/hx_* not mounted