What The Diff: Features, Pricing & Alternatives

About What The Diff

What The Diff is an AI-powered code review tool that analyzes pull-request diffs and writes descriptive comments in plain English. It integrates with GitHub and GitLab to help teams understand changes without spending manual effort. The product focuses on turning code changes into clear, shareable updates for developers and non-technical stakeholders alike. It aims to reduce busywork and keep the whole team informed as work progresses.

The system reads the diff of pull requests via the GitHub/GitLab API and uses an AI model to generate descriptions of the changes. It does not store user code, and supports many programming languages. The tool is designed for developers, maintainers, and product teams who need concise, contextual explanations of changes for reviews and updates.

Users can obtain context-rich PR descriptions, team summaries, and invitations to collaborate. It emphasizes staying in the flow by integrating with existing workflows and delivering timely, understandable content. The approach centers on making PRs easier to review and communicate to teams.

What The Diff supports setup and usage across plans and platforms, with configurable tokens and repositories per account. It provides a getting-started experience that connects GitHub or GitLab accounts, enables repositories, and configures per-repository settings. The service outlines how to manage tokens, language support, and data handling in the context of project workflows.

Use cases

Describe changes in PRs for reviewers and teammates.

Key features

PR descriptions
Summary notifications
Weekly reports
Inline refactoring
Public changelogs
Granular controls

Pros and cons

Pros

Automates PR descriptions and team updates.

Supports translations and non-technical language in notifications.

Cons

No explicit platform limitations beyond token and plan details; note token-based usage.

Pricing

Pro

$19 / month

200k tokens per month
500k tokens? (noted in text)
1.5M tokens claim
Unlimited repositories
Instant code refactoring
Slack, webhook, and email notifications
Priority email support

Reviews

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Frequently asked questions

What is What-the-Diff?

What-the-Diff is an AI-powered app that reviews the diff of your pull requests and writes a descriptive comment about the changes in plain english.

What are tokens?

We process the git diff of your pull requests to generate a descriptive comment. Big diffs need more tokens for processing. Average pull requests are ~2,300 tokens.

Does it store my code?

We don't store your code nor does any of our 3rd party services. We only use the GitHub/Gitlab API to read the diff of your pull requests.

Do unused tokens roll over?

Unused tokens do not roll over to the next month, so make sure to select the smallest plan and upgrade when needed. You can always downgrade to a smaller plan.

Do you train your AI model with my code?

We don't do that and couldn't do that if we wanted – because we don't store your code or diff of your pull request at all.

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