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LongCat 2.5 Preview in OpenCode 1.18.32

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Unfinished output
LongCat 2.5 Preview's SVG for svg_city_park_top_down__agent

This is the unfinished output at the moment the run ended (Stopped by us). See the review below.

Stopped by usCity park top down (agent version)max effortNeutral harness

Wall time 33m 56sCost $0 reported

Generation timelapse

Poster for generation timelapse

Generation timelapse (the agent's screen during the run, sped up). This is not the finished video. Download video (348 KB).

Review

No verdict yet.

The full review

Stopped by us. Stopped by us (box row cap reached (2325s); stopped by the box lane so the run ships as partial); not a model failure.

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

as run, 346 characters. Every result for this prompt

Create an SVG illustration of a top-down map-style illustration of a city park with a pond, winding paths, a playground, trees, benches and people walking dogs. Save it as image.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

Wall time 33m 56sFirst artifact at 7m 48s2 saved versions

Versions saved during the run

2 intermediate outputs, in the order the model wrote them.

Version 2 of 2
  1. Version 1 at 7m 56s thumbnailv1 7:56
  2. Version 2 at 23m 27s thumbnailv2 23:27

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 35 steps

Loading the timeline…

Download the full transcript OpenCode session export, 323 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, as reported by OpenCode (its own bill for the run).

Tokens by typeTokens$ per 1MCost
Input (uncached)123,874n/an/a
Cache write0n/an/a
Cache read1,184,256n/an/a
Output107,432n/an/a
Total computed from tokens
unknown
Total reported by the harness
$0

OpenCode 1.18.32 reported its own total; token counts x list prices shown beside it. No list price for longcat-2.5-preview-free in config/prices.json; no estimate computed. The harness reports reasoning tokens separately from output; here output includes them (106,655 visible + 777 reasoning), and both bill at the output rate.

Run notes

one prompt, agentic harness (self-review allowed)labelled re-run (of svg_city_park_top_down__agent__opencode__longcat-2.5-preview)

  • frozen prompt (written): our frozen prompt, suite svg_250 (harness variant of svg_city_park_top_down)
  • plain OpenCode config copy (providers only; no ECC instructions/agents)
  • opencode export written to a file (not piped)
  • Mode: interactive TUI in tmux (160x48), inside bubblewrap sandbox
  • Isolation audit: outside paths seen