diff --git a/.github/workflows/strix.yml b/.github/workflows/strix.yml
index 672c9b796e..26d5d8b2cb 100644
--- a/.github/workflows/strix.yml
+++ b/.github/workflows/strix.yml
@@ -783,7 +783,7 @@ jobs:
           PR_HEAD_SHA: ${{ github.event_name == 'pull_request_target' && github.event.pull_request.head.sha || github.event.client_payload.pr_head_sha }}
           IS_PR_EVIDENCE_RUN: ${{ (github.event_name == 'pull_request_target' || github.event.client_payload.pr_number != '') && 'true' || 'false' }}
         run: |
-          export LLM_TIMEOUT=0
+          export LLM_TIMEOUT=300
           export STRIX_MEMORY_COMPRESSOR_TIMEOUT=0
           export STRIX_PROCESS_TIMEOUT_SECONDS=0
           export STRIX_TOTAL_TIMEOUT_SECONDS=0
diff --git a/tests/test_strix_llm_timeout_contract.py b/tests/test_strix_llm_timeout_contract.py
new file mode 100644
index 0000000000..6f6da35694
--- /dev/null
+++ b/tests/test_strix_llm_timeout_contract.py
@@ -0,0 +1,20 @@
+"""Regression contract for the Strix model preflight request timeout."""
+
+from __future__ import annotations
+
+import re
+from pathlib import Path
+
+
+WORKFLOW_PATH = Path(__file__).parents[1] / ".github" / "workflows" / "strix.yml"
+
+
+def test_strix_model_preflight_timeout_matches_upstream_default() -> None:
+    """Keep model preflight finite and positive instead of cancelling it immediately."""
+    workflow = WORKFLOW_PATH.read_text(encoding="utf-8")
+    configured_timeouts = re.findall(
+        r"(?m)^\s*export LLM_TIMEOUT=([0-9]+)\s*$",
+        workflow,
+    )
+
+    assert configured_timeouts == ["300"]