diff --git a/src/codeweaver/providers/reranking/providers/base.py b/src/codeweaver/providers/reranking/providers/base.py
index 28e7a93b..1cf6908c 100644
--- a/src/codeweaver/providers/reranking/providers/base.py
+++ b/src/codeweaver/providers/reranking/providers/base.py
@@ -91,10 +91,14 @@ def default_reranking_output_transformer(
     mapped_scores = sorted(
         ((i, score) for i, score in enumerate(results)), key=lambda x: x[1], reverse=True
     )
+
+    # Performance: Pre-compute rank map to avoid O(n^2) algorithmic complexity from nested iteration over mapped_scores
+    rank_map = {idx: j + 1 for j, (idx, _) in enumerate(mapped_scores)}
+
     processed_results.extend(
         RerankingResult(
             original_index=i,
-            batch_rank=next((j + 1 for j, (idx, _) in enumerate(mapped_scores) if idx == i), -1),
+            batch_rank=rank_map.get(i, -1),
             score=score,
             chunk=chunk,
         )