What the Diff
Verified Oct 15, 2026 ActiveWrites your pull request descriptions from the diff and posts them back to GitHub or GitLab
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $19/mo
- Billing
- Monthly
Free plan gives 25,000 tokens a month, roughly ten pull requests, with rate limiting. Pro is sized by token allowance: $19/month for 200,000 tokens (about 40 PRs), $49 for 500,000, $99 for 1.5 million and $199 for unlimited. Unused tokens do not roll over and plans are never upgraded automatically.
Use tool ↗About What the Diff
What the Diff reads a pull request diff through the GitHub or GitLab API and posts a plain-English description of what changed, so whoever opened the PR does not have to write one. It also sends simplified and translated summaries to non-engineers over Slack, email or webhooks, compiles weekly progress reports, publishes a public changelog and applies refactoring requested in a PR comment. Billing runs on tokens consumed against diff size, at around 2,300 tokens for an average PR, with a free monthly allowance and four Pro sizes. The vendor states diffs are processed but code is not stored; it is built by the German studio Beyond Code.
- Platforms
- Web
- API
- Not confirmed
- Last verified
- Oct 15, 2026
Verified sources
- Pricing page: Free $0 with 25,000 tokens/month (~10 PRs); Pro from $19/month for 200,000 tokens, with 500k, 1.5M and Unlimited sizes at $49, $99 and $199; unused tokens do not roll over; full code access required (15 October 2026)whatthediff.ai ↗
- Imprint names Beyond Code GmbH, Kerken, Germany, registered at Amtsgericht Krefeld (15 October 2026)whatthediff.ai ↗
- Home page lists PR descriptions, summary notifications via Slack, email or webhooks, weekly reports, inline refactoring and public changelogs for GitHub and GitLab (15 October 2026)whatthediff.ai ↗
Is What the Diff legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Sep 29, 2022 (4 years ago)Registry record (RDAP), registrar NameCheap, Inc., looked up Sep 17, 2026
- TLS certificate
- Issued by Google Trust Services, valid until Nov 21, 2026Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
- Operated by
- Beyond Code GmbH, GermanyOur research, card verified Oct 15, 2026
Pros & cons of What the Diff
It removes a small repetitive chore well — PR descriptions and changelogs get written without anyone thinking about it — and the free tier is enough to judge that on real repositories. The catch is a token meter tied to diff size, so a handful of large refactors can drain a month's allowance and push a team up the $19 to $199 ladder.
Pros
- Works with both GitHub and GitLab through their APIs
- Public changelog plus weekly reports for people outside the codebase
- Four Pro sizes up to an unlimited plan, so heavier teams have a step up
- Free tier covers roughly ten pull requests a month
Cons
- Token cost tracks diff size, so spend is hard to predict on large changes
- Needs full repository access, because GitHub and GitLab offer no diff-only permission
- Unused tokens expire monthly
Best for
- Teams whose pull request descriptions are habitually empty or one line long
- Keeping non-technical stakeholders informed without hand-written release notes
- Small repositories where the free monthly token budget covers normal flow
Not for
- Correctness review — it summarises and suggests, it does not catch logic bugs
- Monorepos with very large diffs, which burn tokens quickly
Watch out: The app needs full read access to your code — the vendor says GitHub and GitLab offer no diff-only permission — so clear that with whoever owns repository access first.
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