22 Sep 2026
Jev vs Laya: the same model deciding, at ten times the speed
Jev vs Laya. Same board, same food, same decisions. One ate 47. The other ate 4.
Open15 Sep 2026 · Keyword CLAUDE
Four Claude models, one drum machine brief
Four Claudes. One drum machine.
What you just watched
Four Claude models, one short brief: write a single self-contained HTML file that is a working step sequencer, a drum machine, with sound you can hear and meters you can see. Opus 5, Sonnet 5, Haiku 4.5 and Fable 5.1.
One attempt each, a fresh empty folder per model, no follow-up. All four ran in Claude Code, so the costs are on the same basis.
Haiku 4.5 was the fastest and cheapest, and its drum machine makes no sound. Fable 5.1 was the most expensive and built one that works. Opus 5 and Sonnet 5 sit in between on time and cost.
The prices in the reel are too low. My script at the time missed part of every Claude Code bill. Read off each run's own final cost line, the real figures are $1.00 for Opus, $0.39 for Sonnet, $0.13 for Haiku and $2.83 for Fable, against $0.36, $0.15, $0.05 and $1.25 on screen. The order did not change. I left the reel up and fixed the script.
| Entrant | Tool | Time | Cost | Verdict |
|---|---|---|---|---|
| Claude Opus 5 | Claude Code | 3m12 | $1.00 (reel: $0.36) | |
| Claude Sonnet 5 | Claude Code | 2m15 | $0.39 (reel: $0.15) | |
| Claude Haiku 4.5 | Claude Code | 0m58 | $0.13 (reel: $0.05) | Makes no sound |
| Claude Fable 5.1 | Claude Code | 5m20 | $2.83 (reel: $1.25) | Works, with sound |
Behind the wall
The full storyThe exact brief I sentOpus 5's drum machine, as it came outSonnet 5's drum machine, as it came outHaiku 4.5's drum machine, as it came outFable 5.1's drum machine, as it came outThe measured bill, with the corrected figures
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