diff --git a/src/routing/compatibility/behavior.ts b/src/routing/compatibility/behavior.ts
index 553e531bb1..fce2ff004d 100644
--- a/src/routing/compatibility/behavior.ts
+++ b/src/routing/compatibility/behavior.ts
@@ -1,3 +1,4 @@
+import { modelInList } from "../../types";
 import type { OcxConfig, OcxProviderConfig } from "../../types";
 import { PROVIDER_REGISTRY } from "../../providers/registry";
 import { fastPolicyForModel, serviceTierSupportForModel } from "../../providers/service-tier";
@@ -37,8 +38,17 @@ function behaviorRow(source: LabBehaviorSource, value: unknown) {
   return { source, value };
 }
 
+/**
+ * Membership for the provider's `no*Models`-style lists.
+ *
+ * Delegates to modelInList so the report matches the wire: every runtime gate these
+ * rows describe (openai-chat's sampling/reasoning/tool-choice gates, reasoning-effort's
+ * noReasoningModels) matches through modelInList, which also accepts a bare entry for a
+ * tagged id. ollama-cloud serves `gpt-oss:120b` and lists the bare `gpt-oss`, so an
+ * exact-only check here reported "temperature is sent" on a request that omits it.
+ */
 function includesModel(list: string[] | undefined, modelId: string): boolean {
-  return Array.isArray(list) && list.includes(modelId);
+  return modelInList(list, modelId);
 }
 
 function modelValue<T>(map: Record<string, T> | undefined, modelId: string): T | undefined {
diff --git a/tests/routing-compatibility-model-matching.test.ts b/tests/routing-compatibility-model-matching.test.ts
new file mode 100644
index 0000000000..1dee27be25
--- /dev/null
+++ b/tests/routing-compatibility-model-matching.test.ts
@@ -0,0 +1,74 @@
+/**
+ * The compatibility behavior report is documented as "authoritative effective values
+ * emitted by the production route/model/adapter resolver", and its hash keys Lab
+ * evidence. These cases hold it to that: for one routed model they assert the wire the
+ * adapter actually builds, then assert the report describes that same wire.
+ */
+import { describe, expect, test } from "bun:test";
+import { resolveProductionBehaviorValues } from "../src/routing/compatibility/behavior";
+import { createOpenAIChatAdapter } from "../src/adapters/openai-chat";
+import type { OcxConfig, OcxParsedRequest, OcxProviderConfig } from "../src/types";
+
+// ollama-cloud ships `gpt-oss:120b` verbatim (src/providers/registry.ts) and the same
+// registry row lists the bare `gpt-oss` in noVisionModels, i.e. the bare-prefix form is
+// the documented, intended way to write these lists.
+const MODEL = "gpt-oss:120b";
+
+const effective: OcxProviderConfig = {
+  adapter: "openai-chat",
+  baseUrl: "https://ollama.com/v1",
+  apiKey: "sk-test",
+  authMode: "key",
+  noTemperatureModels: ["gpt-oss"],
+  noTopPModels: ["gpt-oss"],
+  noPenaltyModels: ["gpt-oss"],
+  thinkingBudgetModels: ["gpt-oss"],
+  autoToolChoiceOnlyModels: ["gpt-oss"],
+};
+
+const config = { providers: { "ollama-cloud": effective } } as unknown as OcxConfig;
+
+const values = () =>
+  resolveProductionBehaviorValues(config, "ollama-cloud", MODEL, effective, "salt")!;
+
+function wire(): Record<string, unknown> {
+  const parsed: OcxParsedRequest = {
+    modelId: MODEL,
+    context: { messages: [{ role: "user", content: "hi", timestamp: 0 }] },
+    stream: false,
+    options: { temperature: 0.5, topP: 0.9, presencePenalty: 0.2, frequencyPenalty: 0.2 },
+  };
+  return JSON.parse(createOpenAIChatAdapter(effective).buildRequest(parsed).body as string);
+}
+
+describe("behavior report must agree with the wire the adapter actually builds", () => {
+  test("adapter really does omit these for the :tag model (ground truth)", () => {
+    const body = wire();
+    expect(body.temperature).toBeUndefined();
+    expect(body.top_p).toBeUndefined();
+    expect(body.presence_penalty).toBeUndefined();
+    expect(body.frequency_penalty).toBeUndefined();
+  });
+
+  test("report agrees: sampling.omitTemperature", () => {
+    expect(values()["sampling.omitTemperature"]!.value).toBe(true);
+  });
+  test("report agrees: sampling.omitTopP", () => {
+    expect(values()["sampling.omitTopP"]!.value).toBe(true);
+  });
+  test("report agrees: sampling.omitPenalties", () => {
+    expect(values()["sampling.omitPenalties"]!.value).toBe(true);
+  });
+  test("report agrees: reasoning.budgetMode", () => {
+    expect(values()["reasoning.budgetMode"]!.value).toBe(true);
+  });
+  test("report agrees: tools.choiceRestrictions", () => {
+    expect(values()["tools.choiceRestrictions"]!.value).toEqual(["auto"]);
+  });
+
+  test("an unlisted model reports false (control)", () => {
+    const v = resolveProductionBehaviorValues(config, "ollama-cloud", "glm-5.3", effective, "salt")!;
+    expect(v["sampling.omitTemperature"]!.value).toBe(false);
+    expect(v["reasoning.budgetMode"]!.value).toBe(false);
+  });
+});