What The Diff

Freemium#28 of 29 in Pull Request Automation Tools

What The Diff: What The Diff turns pull request changes into summaries, reports, and changelogs. Ranked #28 of 29 in Pull Request Automation Tools by our editors (6.0/10); pricing: Free plan; best for teams mainly needing PR summaries and changelogs.

6.0/10Editor score

Visit What The Diff

What The Diff6.0 Visit What The Diff

At a glance

Editor score
6.0 / 10
Pricing
Free plan
Best for
Teams mainly needing PR summaries and changelogs
Free plan
Yes
Paid from
$19/mo
AI code review
No
Facts checked
26 Sep 2026

Where it wins
- Generates PR descriptions and comments explaining code changes
- Creates weekly reports, shareable changelogs, and a JSON feed
- Works with GitHub and GitLab, plus Slack, email, and webhooks
Where it doesn't
- Does not provide AI code review findings
- GitHub and GitLab each require a separate account
- Free-plan refactoring is rate limited

Our verdict on What The Diff

What The Diff helps development teams explain and communicate pull request changes. It generates descriptions from code changes and can post AI-generated summaries as comments when a pull request is created, updated, or labeled. Teams can also use inline /wtd comments to request refactoring suggestions, create weekly progress reports and shareable changelogs, and send summaries to technical and non-technical colleagues. Its focus is communication around pull requests rather than automated review findings, making it a fit for teams that need clearer summaries and changelogs more than AI code review.

The service supports GitHub and GitLab, and its documentation says each requires a separate account. Slack, email, and webhooks provide routes for notifications and reports. File-pattern inclusion and exclusion rules help teams control which changes are covered. What The Diff is cloud-based and listed for web; the available integrations make it relevant to teams already working across supported Git hosts and notification channels, but not to teams seeking a different host ecosystem.

Pricing is freemium. The Free plan costs $0 per month and includes unlimited repositories and inline code refactoring, which is rate limited. Pro – 200k costs $19 per month and adds instant code refactoring, Slack, webhook, and email notifications, plus priority email support; both plans include unlimited repositories. There is no AI code review, so teams looking for automated review findings should choose another tool. For teams focused on pull request explanations, progress reporting, and changelog generation, the Free plan offers a way to start, while Pro adds faster refactoring and notification options.

Your product? Our editors can test What The Diff in depth and publish a review, labelled as paid · from $149/mo →

What The Diff pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 26 Sep 2026.

See plans on whatthediff.ai

All 2 What The Diff plans and prices →

What The Diff fact sheet

Free plan	Yes
Paid from	$19/mo
AI code review	No
Automated fixes	Yes
CI failure triage	Not verified
Git host support	Multiple
Deployment options	Cloud
Review rules	Not verified
Deployment	Cloud
Platforms	Web
Support	Email
Built for	Small business, Mid-market (editorial estimate)
Integrations	5 integrations: GitHub, GitLab, Slack, Webhooks, Email
Pricing	Free plan (source)
Website	whatthediff.ai
Facts checked	26 Sep 2026

What The Diff integrations

What The Diff lists 5 integrations on its own site.

GitHub
GitLab
Slack
Webhooks
Email

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update