Claude Opus 5.5 in OpenCode 1.18.32
skills off
The model did not finish, so there is no output.
Wall time 20m 08sCost $2.62 reported
Review
No verdict yet.
The full review
DNF. DNF: Opus thought for 20m10s in one turn, used the whole 128,000-token output budget on reasoning (0 visible output tokens), and the turn ended with no text, no tool call and no town.svg. OpenCode does not continue after a max-output stop, so the run ended there. Model/harness behaviour, not an infrastructure failure (prompt delivered, API answered, $2.62 billed).
Attempt 1 of 2
Every try of this model in this harness on this prompt, oldest first. A later attempt is the cell's result: attempt 2.
- Attempt 1 DNF this run20m 08s$2.622026-09-24
- Attempt 2 OK the cell's result59m 06s$15.392026-09-24
Scores
Not scored: only runs that finished on their own are scored.
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), 401 characters. Every result for this prompt
Create an isometric SVG town: first design a small sprite sheet of distinct buildings (in <defs>), then place 20+ of them on an isometric grid with roads, trees, a river and a bridge. Pick your own theme and palette. Save it as town.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
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 OpenCode session export, 113 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 $2.62, as reported by OpenCode (its own bill for the run). The list-price estimate from the token counts is $2.62.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 4 | $4.00 | $0.0000 |
| Cache write | 11,180 | $5.00 | $0.0559 |
| Cache read | 0 | $0.20 | $0 |
| Output | 0 | $20.00 | $0 |
| reasoning | 128,000 | $20.00 | $2.5600 |
- Total computed from tokens
- $2.6159
- Total reported by the harness
- $2.6159
- Difference
- computed 0.0559 vs harness 2.6159
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
- 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