diff --git a/tests/integration/pricing/test_model_listing_token_limits.py b/tests/integration/pricing/test_model_listing_token_limits.py
new file mode 100644
index 00000000000..13702748ec5
--- /dev/null
+++ b/tests/integration/pricing/test_model_listing_token_limits.py
@@ -0,0 +1,29 @@
+import uuid
+from typing import Final
+
+from integration._support.client import Gateway, object_value
+from pydantic import JsonValue
+
+
+def _listed_model(gateway: Gateway, model: str) -> dict[str, JsonValue]:
+    entries: Final = gateway.get("/v1/models")["data"]
+    assert isinstance(entries, list)
+    return next(object_value(entry) for entry in entries if object_value(entry)["id"] == model)
+
+
+def test_v1_models_carries_cost_map_context_window_for_a_known_model(gateway: Gateway) -> None:
+    with gateway.scenario() as scenario:
+        model: Final = scenario.model(model="openai/gpt-4o-mini")
+        listed: Final = _listed_model(gateway, model)
+        # OpenAI publishes these for gpt-4o-mini: https://platform.openai.com/docs/models/gpt-4o-mini (checked 2026-09-24)
+        assert listed["max_input_tokens"] == 128000, listed
+        assert listed["max_output_tokens"] == 16384, listed
+
+
+def test_v1_models_carries_deployment_model_info_limits_for_an_unknown_model(gateway: Gateway) -> None:
+    unknown: Final = f"openai/custom-{uuid.uuid4().hex}"
+    with gateway.scenario() as scenario:
+        model: Final = scenario.model(model=unknown, model_info={"max_input_tokens": 4321, "max_output_tokens": 987})
+        listed: Final = _listed_model(gateway, model)
+        assert listed["max_input_tokens"] == 4321, listed
+        assert listed["max_output_tokens"] == 987, listed