diff --git a/bootstrap-node/src/run.ts b/bootstrap-node/src/run.ts
index 20ca09ac..aed1cf04 100644
--- a/bootstrap-node/src/run.ts
+++ b/bootstrap-node/src/run.ts
@@ -47,7 +47,7 @@ const summarizePost = async ({ data }: { data: object }) =>
     .run({
       initialPrompt: `
       <data>
-        ${JSON.stringify(data)}
+        ${JSON.stringify(data).substring(0, 20_000)}
       </data>
 
       You are given a post from Hacker News, and a url for the post's comments.