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slim topic for summary #673

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slim topic for summary #673

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15 changes: 13 additions & 2 deletions pipeline-worker/src/pipeline-steps/summaries/model.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -178,10 +178,21 @@ export async function callSummaryModel(

summaryLogger.info(context, `Generating summary for topic: ${topicName}`);

// Build prompt with tree data
// Build prompt with a slim projection of the tree.
// The full ProcessedTopic carries fields the summary prompt does not use
// (per-claim duplicates/quote/speaker/commentId, subtopic-level speakers/counts).
// Including them inflates the payload enough to exceed gpt-4o-mini's 128k window
// on large reports — see qtrjTx42u0N2dckBh2dK (May 2026, Taiwan TEC).
const slimTopic = {
topic: topicName,
subtopics: tree[0][1].topics.map(([subtopicName, subtopicData]) => ({
name: subtopicName,
claims: subtopicData.claims.map((c) => c.claim),
})),
};
const { sanitizedText: sanitizedPrompt } = basicSanitize(userPrompt);
let fullPrompt = sanitizedPrompt;
fullPrompt += `\n${JSON.stringify(tree, null, 2)}`;
fullPrompt += `\n${JSON.stringify(slimTopic, null, 2)}`;

// Sanitize system prompt
const { sanitizedText: sanitizedSystemPrompt } = basicSanitize(systemPrompt);
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