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Claude Opus 5.5 in Claude Code 2.1.280

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Poster frame of Claude Opus 5.5's page
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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. Tap inside for sound.

OKSaas growth metricshigh effortNeutral harness

Wall time 21m 25sCost $3.76 estimated

Review

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The full review

OK. Finished on its own after 21.4 min.

Scores

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Downloads

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The exact prompt

as run, 3,757 characters. Every result for this prompt

Build an interactive SaaS growth dashboard from the exact dataset below (CSV: one row per month and plan with customers at the start of the month, new and churned customers during it, and the monthly list price per customer in US dollars). Embed the data in the page verbatim and compute every number from it; do not invent or alter any value. Ending customers = customers_start + new_customers - churned_customers, and MRR = ending customers x price_usd.

month,plan,customers_start,new_customers,churned_customers,price_usd
2025-05,Starter,220,36,15,19
2025-05,Team,90,10,3,79
2025-05,Enterprise,12,3,0,499
2025-06,Starter,241,39,15,19
2025-06,Team,97,12,3,79
2025-06,Enterprise,15,1,1,499
2025-07,Starter,265,46,16,19
2025-07,Team,106,9,4,79
2025-07,Enterprise,15,1,0,499
2025-08,Starter,295,33,24,19
2025-08,Team,111,18,3,79
2025-08,Enterprise,16,2,0,499
2025-09,Starter,304,29,18,19
2025-09,Team,126,13,4,79
2025-09,Enterprise,18,3,0,499
2025-10,Starter,315,47,23,19
2025-10,Team,135,16,6,79
2025-10,Enterprise,21,2,1,499
2025-11,Starter,339,36,20,19
2025-11,Team,145,13,4,79
2025-11,Enterprise,22,3,0,499
2025-12,Starter,355,45,25,19
2025-12,Team,154,17,6,79
2025-12,Enterprise,25,0,0,499
2026-01,Starter,375,38,26,19
2026-01,Team,165,16,4,79
2026-01,Enterprise,25,2,0,499
2026-02,Starter,387,28,31,19
2026-02,Team,177,15,25,79
2026-02,Enterprise,27,1,0,499
2026-03,Starter,384,31,25,19
2026-03,Team,167,17,5,79
2026-03,Enterprise,28,2,1,499
2026-04,Starter,390,29,20,19
2026-04,Team,179,9,6,89
2026-04,Enterprise,29,1,0,549
2026-05,Starter,399,32,34,19
2026-05,Team,182,16,6,89
2026-05,Enterprise,30,2,0,549
2026-06,Starter,397,30,33,19
2026-06,Team,192,12,8,89
2026-06,Enterprise,32,0,1,549
2026-07,Starter,394,43,27,19
2026-07,Team,196,15,8,89
2026-07,Enterprise,31,0,1,549
2026-08,Starter,410,41,28,19
2026-08,Team,203,17,7,89
2026-08,Enterprise,30,0,0,549
2026-09,Starter,423,43,35,19
2026-09,Team,213,15,5,89
2026-09,Enterprise,30,2,0,549
2026-10,Starter,431,28,25,19
2026-10,Team,223,19,7,89
2026-10,Enterprise,32,3,1,549

The dashboard needs: KPI cards for current MRR, MRR growth over the period, current customers, average monthly logo churn rate and net revenue retention estimate; a stacked area chart of MRR by plan over time; a waterfall chart that decomposes the most recent month's MRR change into new, churned and price-change effects; a churn-rate line per plan with any month above twice its plan's average flagged and explained in an annotation; a cohort-style table of customers by plan and month with heat colouring; plan and date-range filters that update every chart; hover or tap tooltips with exact values; and a short auto-written insights panel (three sentences) computed from the data, such as which plan drives growth and when prices changed. Use a refined, modern product-analytics look. So the page is alive without input, on load the charts animate in and then a guided tour cycles forever: it highlights each KPI, steps a cursor through the months on the area chart with live tooltips, rebuilds the waterfall, applies and clears a plan filter, and points out the churn anomaly, until the user touches a control.

Save it as index.html in the current directory: one self-contained file with inline CSS and JavaScript only, no libraries or frameworks, and no external requests of any kind (no CDNs, web fonts, images or audio files). It must work when opened directly from disk, fit any window from a 390 px wide phone to a desktop, and run without console errors. 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

Wall time 21m 25sFirst artifact at 11m 50s6 saved versions

Versions saved during the run

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

Version 6 of 6
  1. Version 1 at 11m 53s thumbnailv1 11:53
  2. Version 2 at 15m 50s thumbnailv2 15:50
  3. Version 3 at 16m 20s thumbnailv3 16:20
  4. Version 4 at 17m 10s thumbnailv4 17:10
  5. Version 5 at 19m 11s thumbnailv5 19:11
  6. Version 6 at 20m 27s thumbnailv6 20:27

No transcript was delivered with this result.

Cost breakdown

Headline cost $3.76, estimated from the token counts at list price.

Tokens by typeTokens$ per 1MCost
Input (uncached)64$4.00$0.0003
Cache write203,239$5.00$1.0162
Cache read3,882,090$0.20$0.7764
Output98,146$20.00$1.9629
of which reasoning38,622billed as output
Total computed from tokens
$3.7558
Total reported by the harness
none

Computed from harness-reported token counts x list prices.

Prices: Project price table (vendor list prices), 2026-09-22.

Run notes

one prompt, agentic harness (self-review allowed)

  • frozen prompt (written): written 2026-10-05 for the MR category expansion (owner request: 500 finished runs in every category); category data_dashboards; zero results
  • plain wave-1-equivalent cc_config copy (settings.json + .claude.json; no ECC files)
  • Mode: interactive TUI in tmux (160x48), inside bubblewrap sandbox
  • Context setting: 1M ([1m] model name)
  • Isolation audit: none
  • Renderer: SVG drawn by plain JavaScript (document.createElementNS at index.html line 423) in one self-contained HTML file; no libraries, no CDN, no external assets, no canvas. No WebGPU or WebGL needed.
  • Card video: the run's own 8 s session capture (video.mp4, H.264 yuv420p, 1280x720). Poster: the run's own render.png.