500 clocks in one 6.3 MB HTML file by Opus 5.5
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Lately I've been testing frontier models by having them create self-contained web pages that display clocks--sort of my personal version of Simon Willison’s pelican-on-a-bicycle metric.I have been particularly impressed by the variety, interest, and quality of the clocks created by Claude Opus 5.5. Over the course of several sessions in the Claude chat interface, I had it build a total of 500 clocks.Claude’s summary of the prompting process and page design is here:https://github.com/tkgally/500-clocks/tree/main
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HN · launched Oct 18, 2026 · 75 upvotes (top 15%)
- Media & entertainment
- Content generation
- B2C
- AI-native
- Hobby / open-source project
Similar launches
See all 70 similar launches →Could you build this?
Yes It is a single self-contained HTML page with CSS and JavaScript generating clocks, which is exactly the kind of artifact an AI coding assistant produces.
Discussion
20 comments analyzed.
Competitors mentioned: gpt-image, NB, Blender MCP
Concerns raised: Cheap programmatic aesthetic and bland typography, Low quality bar across too many designs, Extremely high token consumption and cost, Some designs do not function as actual clocks
Feature requests: Curate a smaller selection with higher quality, Standalone clock widgets
Competitors
Other products that read as similar to this one : 70 launches clear the similarity bar, closest 8 shown.
Attention rank: #14 of 71 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 345 days after the earliest competitor.
- 500-clocks · github · 2026-10-18 · 13 upvotes · similarity 0.59
- awesome-opus-5-5-videos · github · 2026-09-25 · 332 upvotes · similarity 0.46
- Weird Clocks · hn · 2026-04-06 · 53 upvotes · similarity 0.43
- Pelican-bicycle alternatives · hn · 2026-09-14 · 131 upvotes · similarity 0.41
- The bedtime · hn · 2026-01-05 · 13 upvotes · similarity 0.38
- A 45x45 Connections Puzzle To Commemorate 2025=45*45 · hn · 2025-12-24 · 79 upvotes · similarity 0.38
- Slow Clock: 3D Timepiece · ph · 2026-10-10 · 2 upvotes · similarity 0.38
- Beautiful interactive explainers generated with Claude Code · hn · 2026-02-18 · 43 upvotes · similarity 0.38
Other launches for this product
- No other launches for this product.
More details
- External ID
- 50137820
- Company
- n/a
- Product
- 500 clocks in one 6.3 MB HTML file by Opus 5.5
- Website domain
- github.io
- Cohort
- n/a
- Upvotes percentile
- 0.85
- All tags
- n/a
- AI summary
- 500 html clocks generated by claude opus
- Manually corrected
- No