# Review sentiment analysis

> Review sentiment analysis is the automated classification of review text by sentiment and theme, usually to surface recurring operational problems.

_Category: AI · Updated 2026-08-15 · By Elizabeth Davis_

Source: https://happyreplies.com/glossary/review-sentiment-analysis

Star ratings alone are a poor operational signal because a 4-star review can contain a serious complaint and a 5-star can contain nothing actionable. Theme extraction across a few hundred reviews is where the pattern appears.

Modern language models make this cheap enough to run monthly on a small business's full review history, which was not true a few years ago.

## In practice

Run it on the last twelve months, not the last week. You are looking for the complaint that appears eleven times, not the one that appeared loudest.

## FAQ

### Do I need a tool for sentiment analysis?

At under fifty reviews a month, reading them is faster. Above that, tooling stops being optional.

## Related terms

- https://happyreplies.com/glossary/review-management
- https://happyreplies.com/glossary/csat
- https://happyreplies.com/glossary/ai-review-reply