Chain-of-Density: how to make a summary better without making it longer
Article summary
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Ask a model for a summary and the first draft is usually too sparse — it names a couple of things and pads the rest with filler: "remarkable detail", "an important moment". The obvious fix is to ask for "more detail", but then the summary gets longer and you have lost the whole point of a summary. Chain-of-Density (CoD) is the technique that fixes the content while holding the length fixed. I built an interactive demo of it, and the mechanism is simpler — and sharper — than I expected. Fix the…
1Key Takeaways
- Ask a model for a summary and the first draft is usually too sparse — it names a couple of things and pads the rest with filler: "remarkable detail", "an important moment".
- The obvious fix is to ask for "more detail", but then the summary gets longer and you have lost the whole point of a summary.
- Chain-of-Density (CoD) is the technique that fixes the content while holding the length fixed.
- I built an interactive demo of it, and the mechanism is simpler — and sharper — than I expected.
2AIWedia Score
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3Why it matters
Prompt and agent patterns spread fast; staying current saves time and token cost. DEV — Prompt Engineering reports that ask a model for a summary and the first draft is usually too sparse — it names a couple of things and pads the rest with filler: "remarkable detail", "an important moment".
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