Sourcery is narrowly focused on Python, and that focus shows in how specific its suggestions are: rather than generic code review comments, it proposes idiomatic refactorings, simplifying a conditional, replacing a loop with a comprehension, extracting a repeated pattern, grounded in well-established Python style conventions rather than general-purpose LLM judgment about code quality.
It runs as an IDE plugin for live suggestions while coding, a CLI for scanning a codebase in batch, and a GitHub integration that reviews pull requests automatically, giving teams flexibility in where in their workflow they want the feedback to show up. Because its scope is deliberately narrow, a single language with a strong idiom tradition, its suggestions tend to be more consistently useful than broader multi-language review tools that have to generalize across very different language conventions.
Pricing is freemium, with paid plans starting around $10 a month, aimed specifically at Python teams and developers who want refactoring suggestions grounded in real Python idioms rather than a general AI code reviewer that happens to also support Python among many other languages.