diff --git a/docs/reading-cost.md b/docs/reading-cost.md
index e1ed0e0..a6a9b01 100644
--- a/docs/reading-cost.md
+++ b/docs/reading-cost.md
@@ -232,3 +232,20 @@ Read most (opens and searches):
 - `MIGRATION.md` 2
 - `AGENTS.md` 1
 - `ci.sh` 1
+
+## Reading cost, chunk 8a2f6cd68381, finished 2026-10-11T10:14:12Z
+
+96564 new input tokens before the first commit.
+
+Read most (opens and searches):
+
+- `README.md` 6
+- `src/markdown/parse/portable-markdown-to-adf.test.ts` 5
+- `todo.md` 4
+- `src/markdown/parse/markdown-to-adf.ts` 3
+- `CHANGELOG.md` 2
+- `src/markdown/portable/task-list.ts` 2
+- `src/result.ts` 2
+- `ci.sh` 1
+- `docker-runner.sh` 1
+- `docs/decisions.md` 1
diff --git a/todo.md b/todo.md
index e461a8a..7b0cdd3 100644
--- a/todo.md
+++ b/todo.md
@@ -109,10 +109,10 @@ commonmark.js avoids the backtick cost by caching backtick runs by length.
 
 The last five chunks' median is 168135 new input tokens before their first commit, the five before
 them 97329. Files read most over the last five chunks, counting opens and searches: `docs/decisions.md` 28, `README.md`
-23, `todo.md` 23, `CHANGELOG.md` 19, `src/markdown/parse/blocks.ts` 15,
+27, `todo.md` 26, `CHANGELOG.md` 20, `src/markdown/parse/blocks.ts` 15,
 `src/markdown/portable/adf-to-portable-markdown.ts` 12, `spec/flavour.md` 10,
-`src/markdown/emit/line-escaping.ts` 9, `src/markdown/parse/markdown-to-adf.test.ts` 8,
-`MIGRATION.md` 7.
+`src/markdown/parse/portable-markdown-to-adf.test.ts` 10, `src/markdown/emit/line-escaping.ts` 9,
+`src/markdown/parse/markdown-to-adf.test.ts` 8.
 
 ### 33. Emit a line in time linear in its mark runs, in `adfToLosslessMarkdown` and `adfToPortableMarkdown`.