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A comment on Show HN: Headroom (OSS): Cuts LLM costs by 85%.

Re:Show HN: Headroom (OSS): Cuts LLM costs by 85% by chopratejas on Sunday January 18, 2026 @01:44AM (#46665377)
Some results from real world data so far:

  ┌─────────────────┬─────────────┬──────────────────────────────┐
  │    Data Type    │ Compression │             Why              │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ Server logs     │ 90%+        │ Highly repetitive patterns   │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ MCP tool output │ 70%+        │ JSON structure overhead      │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ Database rows   │ 50-70%      │ Same schema, many records    │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ File trees      │ 40-50%      │ Repeated metadata            │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ Code diffs      │ 0%          │ Every line unique            │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ Dense prose     │ -0.3%       │ No patterns, slight overhead │
  ├─────────────────┼─────────────┼──────────────────────────────┤
  │ Encrypted       │ 0%          │ Incompressible               │
  └─────────────────┴─────────────┴──────────────────────────────┘
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