GPT-6 Astra in Codex CLI 0.156.1
skills off
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. It starts in its auto-tour (T switches to play mode on a keyboard).
Recorded from the live demo (stepped clock). Preview video recorded by this site from the live demo. The moving picture above is that preview; the button runs the real page.
Wall time 27m 52sCost $8.01 estimated
Generation timelapse
Generation timelapse (the agent's screen during the run, sped up). This is not the finished video. Download video (860 KB).
Review
No verdict yet.
The full review
OK. Finished on its own after 27.9 min.
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, 1,421 characters. Every result for this prompt
Build a single self-contained Three.js scene of a fantasy sailing ship at sea, seen from a cinematic three-quarter view. The ship has a carved dragon figurehead at the bow with an open jaw and horns, a wooden hull with visible planking and a raised stern castle, three masts with full canvas sails that billow and a few pennants, rigging lines, and lanterns along the rail. It sails on animated water with rolling waves, foam at the bow, reflections and a sun path on the surface. Behind it a rocky coast with a small harbour town: stone houses with tiled roofs, a lighthouse, a pier and scattered trees on green hills. Warm late-afternoon lighting with a low sun, long shadows, light haze in the distance and a sky with a few clouds. The camera slowly orbits the ship. Everything is built in code from Three.js geometry and materials; no external models or textures. Output ONLY the complete index.html, starting with <!DOCTYPE html> and ending with </html>, with no explanation and no markdown fences. Build it as index.html (plus any local asset files you create) in the current directory. Three.js may load from a pinned CDN. You may serve it locally and open it in headless chromium (/usr/bin/chromium, software WebGL, no GPU) to screenshot and inspect your own output, and iterate on your own until it looks genuinely cinematic before finishing. Close any browser you open as soon as you've taken your screenshot.
How it was made
Versions saved during the run
3 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 5.3 MB; it is published as a scrubbed, compressed download rather than shown on the page.
Show all 68 steps
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Download the full transcript Codex CLI rollout JSONL, 228 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 $8.01, estimated from the token counts at list price.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 129 | $10.00 | $0.0013 |
| Cache write | 108,367 | $10.00 | $1.0837 |
| Cache read | 2,656,846 | $1.00 | $2.6568 |
| Output | 85,399 | $50.00 | $4.2699 |
| of which reasoning | 33,378 | billed as output |
- Total computed from tokens
- $8.0118
- Total reported by the harness
- none
Computed from harness-reported token counts x list prices. Cache writes priced at the input rate (the price table has no separate cache-write price).
Prices: Project price table (vendor list prices), 2026-09-22.
Run notes
- frozen prompt (rewritten): threejs_dragon_ship_a_plain.txt: rewritten, original NOT_RECOVERED
- plain CODEX_HOME copy (config.toml only, run work/ trusted; no AGENTS.md/skills/state)
- Mode: interactive TUI in tmux (160x48), inside bubblewrap sandbox
- Isolation audit: outside paths seen