DeepSeek V4.1 Flash in dsh 0.1.5-rc.3
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. 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 1h 05mCost $0.12 estimated

Generation timelapse

Generation timelapse (the agent's screen during the run, sped up). This is not the finished video. Download video (2.2 MB).
Review
No verdict yet.
The full review
OK. Finished on its own after 65.7 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, 664 characters. Every result for this prompt
Build a GPU-accelerated fluid simulation in a single HTML file using WebGL, no external libraries. Dragging the mouse or a finger should push colorful dye through the fluid, with a soft glow. Make it look stunning and run smoothly. Build it as a self-contained index.html in the current directory, with WebGL/WebGL2 shaders you write yourself; no libraries and no CDNs; interactive with mouse or touch input. 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 before finishing. Close any browser you open as soon as you've taken your screenshot.
How it was made
Versions saved during the run
44 intermediate outputs, in the order the model wrote them.

v1 2:12
v2 2:33
v3 2:39
v4 7:49
v5 7:54
v6 10:47
v7 10:58
v8 11:03
v9 11:08
v10 12:24
v11 12:34
v12 17:00
v13 17:05
v14 20:44
v15 23:43
v16 23:48
v17 23:53
v18 23:59
v19 24:09
v20 24:19
v21 24:29
v22 29:46
v23 29:51
v24 29:56
v25 34:02
v26 34:12
v27 34:18
v28 36:51
v29 36:57
v30 37:02
v31 38:18
v32 38:23
v33 38:28
v34 39:45
v35 42:43
v36 45:37
v37 48:36
v38 48:41
v39 50:19
v40 50:34
v41 50:39
v42 53:43
v43 1:00:11
v44 1:04:34
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 2.4 MB; it is published as a scrubbed, compressed download rather than shown on the page.
Show all 286 steps
Loading the timeline…
Download the full transcript dsh session log, 454 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 $0.12, estimated from the token counts at list price.
| Tokens by type | Tokens | $ per 1M | Cost |
|---|---|---|---|
| Input (uncached) | 60,023 | $0.15 | $0.0090 |
| Cache write | 0 | $0.15 | $0 |
| Cache read | 13,941,120 | $0.00 | $0.0418 |
| Output | 112,788 | $0.60 | $0.0677 |
| of which reasoning | 54,485 | billed as output |
- Total computed from tokens
- $0.1185
- Total reported by the harness
- none
Computed from harness-reported token counts x list prices. DeepSeek bills no cache writes (a cache miss is input), so cache_write is 0; dsh prints no dollar figure.
Prices: https://api-docs.deepseek.com/quick_start/pricing, 2026-09-24.
Run notes
- frozen prompt (written): engine/prompts_written/gpu_fluid_sim.txt: Voxyz's own prompt verbatim (x.com/Voxyz_ai/status/2103088468762960378) + our fixed inputs (self-contained index.html, own WebGL/WebGL2 shaders, no libraries/CDNs, mouse/touch input) (supervisor 725c3fc2 05:53Z; zero results)
- dsh has no terminal UI: headless mode (TUI not automatable), run in tmux for screenshots
- dsh session log decompressed from session.v3.jsonl.zstd
- Mode: headless mode (TUI not automatable) — dsh --profile headless in tmux, inside bubblewrap
- Isolation audit: outside paths seen






