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What the agents built. Same task, every run published.

One frozen coding task each. Same prompt for every agent, every run published.

1 benchmark · 60 published runs · 12 models

Effects · legacy contract v1

Lava lamp v1

“Build a lava lamp as a single index.html file with no external requests.”

Published runs
60
Models
12 in 2 agents
Works
54 of 59 checked
Fastest median build
1m 04sGPT-5.6 Luna
Compare the resultsRead the task
  • Haiku 5.55/5 work5 runs
  • Opus 5.55/5 work5 runs
  • Sonnet 5.55/5 work5 runs
  • Fable 5.15/5 work5 runs
  • GPT-6.1 Sol5/5 work5 runs
  • GPT-6.1 Terra5/5 work5 runs
  • GPT-6 Astra4/4 work5 runs
  • GPT-6 Luna4/5 work5 runs
  • GPT-6 Sol5/5 work5 runs
  • GPT-5.6 Luna5/5 work5 runs
  • GPT-5.6 Sol2/5 work5 runs
  • GPT-5.6 Terra4/5 work5 runs