diff --git a/run_agent.py b/run_agent.py
index dd2641e782..8d8789657e 100644
--- a/run_agent.py
+++ b/run_agent.py
@@ -1886,17 +1886,23 @@ class AIAgent:
         report finish_reason correctly and were the source of #13971's
         false-positive truncation continuations.
 
-        Also excludes Ollama Cloud (ollama.com) — the hosted service
-        correctly reports finish_reason and is not affected by the local
-        Ollama stop-reason bug (GH-72316).
+        Also excludes Ollama Cloud — the hosted service correctly reports
+        finish_reason and is not affected by the local Ollama stop-reason
+        bug (GH-72316).  Two signatures identify it: the ``ollama.com`` host
+        (provider ``ollama-cloud``) and the ``:cloud`` model suffix (cloud
+        generation proxied through a local 11434 endpoint, #98406).  Applying
+        the stop→length rewrite to them manufactures false truncations and
+        causes the continuation nudge to consume the model's output budget
+        on the next retry, making further false-positives more likely.
         """
         model_lower = (self.model or "").lower()
         provider_lower = (self.provider or "").lower()
         if "glm" not in model_lower and provider_lower != "zai":
             return False
         base = self._base_url_lower
-        # Exclude Ollama Cloud (ollama.com) — hosted service, not local Ollama
-        if "ollama.com" in base:
+        # Ollama Cloud (hosted service or :cloud proxy) forwards finish_reason
+        # faithfully — do not rewrite.
+        if "ollama.com" in base or ":cloud" in model_lower:
             return False
         if "ollama" in base or ":11434" in base:
             return True