diff --git a/src/agents/model-selection.ts b/src/agents/model-selection.ts
index 5be15fa15a8..385558c43b8 100644
--- a/src/agents/model-selection.ts
+++ b/src/agents/model-selection.ts
@@ -1,4 +1,3 @@
-import { resolveThinkingDefaultForModel } from "../auto-reply/thinking.shared.js";
 import {
   resolveAgentModelFallbackValues,
   resolveAgentModelPrimaryValue,
@@ -8,7 +7,6 @@ import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { createSubsystemLogger } from "../logging/subsystem.js";
 import {
   normalizeLowercaseStringOrEmpty,
-  normalizeOptionalLowercaseString,
   normalizeOptionalString,
 } from "../shared/string-coerce.js";
 import { sanitizeForLog, stripAnsi } from "../terminal/ansi.js";
@@ -21,6 +19,7 @@ import { resolveConfiguredProviderFallback } from "./configured-provider-fallbac
 import { DEFAULT_MODEL, DEFAULT_PROVIDER } from "./defaults.js";
 import type { ModelCatalogEntry } from "./model-catalog.types.js";
 import { splitTrailingAuthProfile } from "./model-ref-profile.js";
+export { resolveThinkingDefault } from "./model-thinking-default.js";
 import {
   type ModelRef,
   findNormalizedProviderKey,
@@ -761,65 +760,6 @@ export function resolveAllowedModelRef(params: {
   return { ref: resolved.ref, key: status.key };
 }
 
-export function resolveThinkingDefault(params: {
-  cfg: OpenClawConfig;
-  provider: string;
-  model: string;
-  catalog?: ModelCatalogEntry[];
-}): ThinkLevel {
-  const normalizedProvider = normalizeProviderId(params.provider);
-  const normalizedModel = normalizeLowercaseStringOrEmpty(params.model).replace(/\./g, "-");
-  const catalogCandidate = params.catalog?.find(
-    (entry) => entry.provider === params.provider && entry.id === params.model,
-  );
-  const configuredModels = params.cfg.agents?.defaults?.models;
-  const canonicalKey = modelKey(params.provider, params.model);
-  const legacyKey = legacyModelKey(params.provider, params.model);
-  const normalizedCanonicalKey = normalizeLowercaseStringOrEmpty(canonicalKey);
-  const normalizedLegacyKey = normalizeOptionalLowercaseString(legacyKey);
-  const primarySelection = normalizeModelSelection(params.cfg.agents?.defaults?.model);
-  const normalizedPrimarySelection = normalizeOptionalLowercaseString(primarySelection);
-  const explicitModelConfigured =
-    (configuredModels ? canonicalKey in configuredModels : false) ||
-    Boolean(legacyKey && configuredModels && legacyKey in configuredModels) ||
-    normalizedPrimarySelection === normalizedCanonicalKey ||
-    Boolean(normalizedLegacyKey && normalizedPrimarySelection === normalizedLegacyKey) ||
-    normalizedPrimarySelection === normalizeLowercaseStringOrEmpty(params.model);
-  const perModelThinking =
-    configuredModels?.[canonicalKey]?.params?.thinking ??
-    (legacyKey ? configuredModels?.[legacyKey]?.params?.thinking : undefined);
-  if (
-    perModelThinking === "off" ||
-    perModelThinking === "minimal" ||
-    perModelThinking === "low" ||
-    perModelThinking === "medium" ||
-    perModelThinking === "high" ||
-    perModelThinking === "xhigh" ||
-    perModelThinking === "adaptive"
-  ) {
-    return perModelThinking;
-  }
-  const configured = params.cfg.agents?.defaults?.thinkingDefault;
-  if (configured) {
-    return configured;
-  }
-  if (
-    normalizedProvider === "anthropic" &&
-    explicitModelConfigured &&
-    typeof catalogCandidate?.name === "string" &&
-    /4\.6\b/.test(catalogCandidate.name) &&
-    (normalizedModel.startsWith("claude-opus-4-6") ||
-      normalizedModel.startsWith("claude-sonnet-4-6"))
-  ) {
-    return "adaptive";
-  }
-  return resolveThinkingDefaultForModel({
-    provider: params.provider,
-    model: params.model,
-    catalog: params.catalog,
-  });
-}
-
 /** Default reasoning level when session/directive do not set it: "on" if model supports reasoning, else "off". */
 export function resolveReasoningDefault(params: {
   provider: string;
diff --git a/src/agents/model-thinking-default.ts b/src/agents/model-thinking-default.ts
new file mode 100644
index 00000000000..5479152253d
--- /dev/null
+++ b/src/agents/model-thinking-default.ts
@@ -0,0 +1,70 @@
+import { resolveThinkingDefaultForModel } from "../auto-reply/thinking.shared.js";
+import type { OpenClawConfig } from "../config/types.openclaw.js";
+import {
+  normalizeLowercaseStringOrEmpty,
+  normalizeOptionalLowercaseString,
+} from "../shared/string-coerce.js";
+import type { ModelCatalogEntry } from "./model-catalog.types.js";
+import { legacyModelKey, modelKey, normalizeProviderId } from "./model-selection-normalize.js";
+import { normalizeModelSelection } from "./model-selection-resolve.js";
+
+type ThinkLevel = "off" | "minimal" | "low" | "medium" | "high" | "xhigh" | "adaptive";
+
+export function resolveThinkingDefault(params: {
+  cfg: OpenClawConfig;
+  provider: string;
+  model: string;
+  catalog?: ModelCatalogEntry[];
+}): ThinkLevel {
+  const normalizedProvider = normalizeProviderId(params.provider);
+  const normalizedModel = normalizeLowercaseStringOrEmpty(params.model).replace(/\./g, "-");
+  const catalogCandidate = params.catalog?.find(
+    (entry) => entry.provider === params.provider && entry.id === params.model,
+  );
+  const configuredModels = params.cfg.agents?.defaults?.models;
+  const canonicalKey = modelKey(params.provider, params.model);
+  const legacyKey = legacyModelKey(params.provider, params.model);
+  const normalizedCanonicalKey = normalizeLowercaseStringOrEmpty(canonicalKey);
+  const normalizedLegacyKey = normalizeOptionalLowercaseString(legacyKey);
+  const primarySelection = normalizeModelSelection(params.cfg.agents?.defaults?.model);
+  const normalizedPrimarySelection = normalizeOptionalLowercaseString(primarySelection);
+  const explicitModelConfigured =
+    (configuredModels ? canonicalKey in configuredModels : false) ||
+    Boolean(legacyKey && configuredModels && legacyKey in configuredModels) ||
+    normalizedPrimarySelection === normalizedCanonicalKey ||
+    Boolean(normalizedLegacyKey && normalizedPrimarySelection === normalizedLegacyKey) ||
+    normalizedPrimarySelection === normalizeLowercaseStringOrEmpty(params.model);
+  const perModelThinking =
+    configuredModels?.[canonicalKey]?.params?.thinking ??
+    (legacyKey ? configuredModels?.[legacyKey]?.params?.thinking : undefined);
+  if (
+    perModelThinking === "off" ||
+    perModelThinking === "minimal" ||
+    perModelThinking === "low" ||
+    perModelThinking === "medium" ||
+    perModelThinking === "high" ||
+    perModelThinking === "xhigh" ||
+    perModelThinking === "adaptive"
+  ) {
+    return perModelThinking;
+  }
+  const configured = params.cfg.agents?.defaults?.thinkingDefault;
+  if (configured) {
+    return configured;
+  }
+  if (
+    normalizedProvider === "anthropic" &&
+    explicitModelConfigured &&
+    typeof catalogCandidate?.name === "string" &&
+    /4\.6\b/.test(catalogCandidate.name) &&
+    (normalizedModel.startsWith("claude-opus-4-6") ||
+      normalizedModel.startsWith("claude-sonnet-4-6"))
+  ) {
+    return "adaptive";
+  }
+  return resolveThinkingDefaultForModel({
+    provider: params.provider,
+    model: params.model,
+    catalog: params.catalog,
+  });
+}
diff --git a/src/cron/isolated-agent/run.runtime.ts b/src/cron/isolated-agent/run.runtime.ts
index c873a114224..fff003c988c 100644
--- a/src/cron/isolated-agent/run.runtime.ts
+++ b/src/cron/isolated-agent/run.runtime.ts
@@ -7,7 +7,8 @@ export {
 } from "../../agents/agent-scope.js";
 export { resolveCronStyleNow } from "../../agents/current-time.js";
 export { DEFAULT_CONTEXT_TOKENS } from "../../agents/defaults.js";
-export { isCliProvider, resolveThinkingDefault } from "../../agents/model-selection.js";
+export { isCliProvider } from "../../agents/model-selection-cli.js";
+export { resolveThinkingDefault } from "../../agents/model-thinking-default.js";
 export { resolveAgentTimeoutMs } from "../../agents/timeout.js";
 export { deriveSessionTotalTokens, hasNonzeroUsage } from "../../agents/usage.js";
 export { DEFAULT_IDENTITY_FILENAME, ensureAgentWorkspace } from "../../agents/workspace.js";