Redditor runs unattended DeepSeek loops for days: 237M tokens for just $3.48
dogfoodarchitect · reddit · 2026-10-01
A Reddit user details running extremely long unattended AI agent loops — his longest a 110-hour Qwen run, usually cut off by 5-hour or weekly usage limits rather than failure.
His current run uses DeepSeek V4.1-Flash on intense soft-body physics and math tasks, 19+ hours continuous, with a full cost breakdown:
- 237.2M tokens processed, 81.54% cache hit rate
- Total spend of only $3.48 ($0.0147/1M tokens), burning $0.18/hour
- At 12.29M tokens/hour, remaining $101.52 gives 564 hours (23.5 days) of runway
The post shows how cheap long-running agent loops can be with high cache hit rates; he plans to let it loop the full 23 days 'for science'.
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