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What is Word error rate?

How often speech recognition gets words wrong.

Word Error Rate is the proportion of words a recogniser inserts, deletes or substitutes against a reference transcript. Lower is better, but the figure is only meaningful alongside the conditions it was measured in — telephone audio scores worse than studio audio on every system.

This is an industry glossary. A term defined here is not a statement that Drop AI provides it — see the pricing page for what is included.

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