diff --git a/agent/auxiliary_client.py b/agent/auxiliary_client.py
index a069629e44..551341e9a6 100644
--- a/agent/auxiliary_client.py
+++ b/agent/auxiliary_client.py
@@ -671,7 +671,9 @@ def _is_codex_gpt54_or_gpt55(model: Optional[str], provider: Optional[str] = Non
     via prefix so the override tracks every 272K-capped family (5.4, 5.5,
     5.6 sol/terra/luna incl. their ``-pro`` modes) without re-listing every
     variant. (Name kept for backward compatibility with the
-    ``compression.codex_gpt55_autoraise`` config key.)
+    ``compression.codex_gpt55_autoraise`` config key.) The exact
+    ``gpt-daybreak-blue-latest`` Codex slug is also a verified Sol-family
+    alias and receives the same autoraise.
     """
     prov = (provider or "").strip().lower()
     if prov != "openai-codex":
@@ -687,6 +689,7 @@ def _is_codex_gpt54_or_gpt55(model: Optional[str], provider: Optional[str] = Non
         or bare == "gpt-5.6"
         or bare.startswith("gpt-5.6-")
         or bare.startswith("gpt-5.6.")
+        or bare == "gpt-daybreak-blue-latest"
     )
 
 
@@ -741,7 +744,8 @@ def _compression_threshold_for_model(
 
     Per-model/route overrides:
       - Arcee Trinity Large Thinking → 0.75 (preserve reasoning context).
-      - gpt-5.4 / gpt-5.5 / gpt-5.6 on the Codex OAuth route → 0.85, because
+      - gpt-5.4 / gpt-5.5 / gpt-5.6 and the exact Daybreak Sol alias on the
+        Codex OAuth route → 0.85, because
         Codex caps all three families at 272K and the default 50% trigger
         would compact at ~136K. Gated by ``allow_codex_gpt55_autoraise``
         (historical config-key name kept for backward compatibility) so the
diff --git a/tests/agent/test_arcee_trinity_overrides.py b/tests/agent/test_arcee_trinity_overrides.py
index 562674527c..63e6bbc161 100644
--- a/tests/agent/test_arcee_trinity_overrides.py
+++ b/tests/agent/test_arcee_trinity_overrides.py
@@ -74,7 +74,10 @@ def test_compression_threshold_default_none_for_other_models() -> None:
 
 @pytest.mark.parametrize(
     "model",
-    ["gpt-5", "gpt-5.55", "gpt-5.50", "gpt-5.45", "gpt-5.40", "", None],
+    [
+        "gpt-5", "gpt-5.55", "gpt-5.50", "gpt-5.45", "gpt-5.40",
+        "gpt-daybreak-blue-latest-mini", "", None,
+    ],
 )
 def test_is_codex_gpt54_or_gpt55_rejects_non_54_55_models(model) -> None:
     # Close numeric neighbours must NOT match — the prefix guards require a
@@ -89,6 +92,8 @@ def test_compression_threshold_for_codex_gpt55() -> None:
     assert _compression_threshold_for_model("gpt-5.5", "openai-codex") == 0.85
     assert _compression_threshold_for_model("gpt-5.5-pro", "openai-codex") == 0.85
     assert _compression_threshold_for_model("openai/gpt-5.5", "openai-codex") == 0.85
+    assert _is_codex_gpt54_or_gpt55("gpt-daybreak-blue-latest", "openai-codex") is True
+    assert _compression_threshold_for_model("gpt-daybreak-blue-latest", "openai-codex") == 0.85