Claude Fable 5.1 in OpenCode 1.18.32
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Wall time 12m 08sCost $3.18 reported9.5/10 · Draft score — AI judge
Review
The best-composed pelican in the row: a white pelican with a big orange pouch firmly seated on a red bike, both feet on the pedals, a wing gripping the handlebar, chain and spoked wheels, on a road with speed lines, hills and sun.
The full review
The best-composed pelican in the row: a white pelican with a big orange pouch firmly seated on a red bike, both feet on the pedals, a wing gripping the handlebar, chain and spoked wheels, on a road with speed lines, hills and sun. Fable at max ran to completion in OpenCode in 12 min.
Verdict by the AI judge (provisional).
OK. Finished on its own after 12.1 min and produced pelican.svg.
Bugs
- Legs pass in front of the top tube and look slightly stiff
- Pouch is flat orange with no shading
Scores
AI judge
9.5/10
Draft score — AI judge
Visitor votes and reviewer grades are not available yet.
| Criterion | Marks |
|---|---|
| pelican | 2 |
| bicycle | 2 |
| riding | 2 |
| composition | 2 |
| craft | 1.5 |
| Total (sum of the marks) | 9.5 / 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
8 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 machine-format transcript is published as a scrubbed download.
Show all 49 steps
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Download the full transcript OpenCode session export, 176 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 $3.18, as reported by OpenCode (its own bill for the run). The list-price estimate from the token counts is $3.18.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 66 | $10.00 | $0.0007 |
| Cache write | 61,576 | $12.50 | $0.7697 |
| Cache read | 1,432,461 | $0.25 | $0.3581 |
| Output | 16,820 | $50.00 | $0.8410 |
| reasoning | 24,246 | $50.00 | $1.2123 |
- Total computed from tokens
- $3.1818
- Total reported by the harness
- $3.1818
- Difference
- computed 1.9695 vs harness 3.1818
Tokens from OpenCode per-message usage; harness total = sum of OpenCode per-message cost. OpenCode reports reasoning separately; both bill at the output rate (output line here = output only, see reasoning).
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 and /run, private PID ns; only this run dir, harness binaries (ro), opencode config, /usr, /etc bound; HOME/TMPDIR/XDG data private; the project files and other runs not mounted