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Developer toolsAvailable

What The Diff

AI assistant for pull request descriptions and summaries

What The Diff analyzes pull request diffs from GitHub or GitLab to write descriptions and review comments. It also creates stakeholder-friendly notifications, weekly progress reports, AI-assisted refactoring suggestions, and changelogs generated from pull request descriptions.

WTWhat The DiffProduct screenshot pending
Best for
Development teams using GitHub pull requests
Pricing signal
USD 0 / month
Primary category
Developer tools
Last verified
Jul 30, 2026

The decision

Should What The Diff make your shortlist?

Start with the job, the team, and the constraints. Product fit becomes much clearer when those three line up.

Strongest fit

Who it is built for

  • Development teams using GitHub pull requests
  • Development teams using GitLab merge requests
  • Teams sharing engineering progress with non-technical stakeholders
Practical use cases

Jobs it can take on

  • Generate a pull request description from a code diff
  • Send simplified pull request notifications through Slack, email, or webhooks
  • Publish AI-generated changelogs from selected pull request descriptions
Before you choose

Know the tradeoffs

  • The service supports GitHub and GitLab accounts.
  • What The Diff requires full repository access because GitHub and GitLab do not offer a diff-only permission.
  • Unused tokens do not roll over to the next month.

Inside the product

What you can actually do with it.

The core product capabilities, grouped around the work they enable.

Automated pull request descriptions

What The Diff analyzes pull request diffs and writes descriptions of the changes.

Summary notifications

The tool can send simplified and translated pull request summaries to Slack, email, or custom webhooks.

Inline AI refactoring

Users can comment with the /wtd command to request a suggested code change that can be accepted in the pull request.

Typical workflow

Connect a GitHub or GitLab account, authorize the repositories you want to use, and enable the service for each repository. What The Diff reads the pull request diff and generates descriptions or comments according to the repository settings.

Plans and official links

Plans and accessUSD 0 / month.

See the entry price, free access options, company details, and direct vendor destinations in one place.

Choosing for a real workflow?

Make the tool work with the rest of your operation.

We map the workflow, connect existing systems, choose what to buy, and build what is missing.

Discuss your workflow