diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 2f9e56844..61f509153 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -4,6 +4,7 @@
 - [ ] I am aware of the [etiquette](https://github.com/element-hq/element-x-ios/blob/develop/CONTRIBUTING.md#etiquette).
 - [ ] Pull request contains a [changelog label](https://github.com/element-hq/element-x-ios/blob/develop/CONTRIBUTING.md#changelog).
 - [ ] This PR has been made with the help of an LLM.
+  - Model and harness used: <!-- e.g. Claude Opus 5.5 with Claude Code -->
 
 **UI changes have been tested with:**
 - [ ] iPhone and iPad simulators in portrait and landscape orientations.
diff --git a/AGENTS.md b/AGENTS.md
index 75d33b7e1..74d68545b 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -60,6 +60,7 @@ PRs must follow rules. Prefer Xcode MCP tools over terminal commands.
 - Exactly one `pr-` label (see `.github/release.yml`).
 - Title = changelog entry — descriptive, no "Fixes #…".
 - Leave description template for developer. Point them to [contributing etiquette](CONTRIBUTING.md#etiquette).
+- Only fill template LLM line: tick box, name model + harness that made PR (e.g. Claude Opus 5.5, Claude Code).
 - Screenshots/videos for visual changes.
 - 500 additions max — split big changes.
 - Commits need title + description. No tiny commits, no massive commits.