Sourcery

Sourcery does one job: it reads every pull request and leaves the comments a senior reviewer would, including line-by-line suggestions, change summaries and diagrams that make a large diff easier to reason about. Security scans run alongside the review, and the Team plan's bring-your-own-LLM option lets a team point Sourcery at a model of its choice rather than accepting a fixed one.

Sourcery.AI Limited is a UK company incorporated in 2018, registered in London, with UK law and London courts governing its terms — a shorter, plainer jurisdiction story than tools that split EU and US regions. Both paid plans offer a free trial, and open-source repositories get Pro-level review for up to three repositories at no cost.

Pricing is transparent and modest next to the coding assistants elsewhere in this category: Pro at $12 per seat per month, Team at $24, Enterprise on request with self-hosting. What it does not do is write or complete code — it is a reviewer, not a generator, so it pairs with rather than replaces a tool like Continue or JetBrains AI Assistant.

What Sourcery does well

• Comments on every pull request automatically
• Change summaries and diagrams for large diffs
• Bring-your-own-LLM on the Team plan
• UK company, plain single-jurisdiction terms
• Transparent per-seat pricing from $12/month

Where Sourcery falls short

• Review only — does not generate or complete code
• Free tier limited to three open-source repositories
• Self-hosting is an Enterprise-only feature
• Smaller feature set than full coding-assistant platforms

Standout feature. Bring-your-own-LLM on the Team plan: the one reviewer here that lets you swap the model underneath it rather than accepting the vendor's choice.