Code Review

Sourcery

An AI coding assistant focused on Python that suggests refactors and reviews pull requests for readability, performance, and best practices.

Pricing

Free tier available, Team plan around $12/developer/mo

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Sourcery started as a Python refactoring tool built into the IDE and has expanded into automated pull request review, suggesting concrete code improvements for readability, performance, and adherence to best practices.

Why it stands out

Deep Python roots — refactoring suggestions are tuned specifically to idiomatic, Pythonic patterns rather than generic advice.
Inline refactor suggestions appear as you type in the IDE, not just after a PR is opened.
PR review mode comments on pull requests with the same refactoring engine used for live coding.

Good for

Python teams that want refactoring-quality suggestions both while coding and during pull request review.