diff --git a/src/agents/auth-profiles/session-override.test.ts b/src/agents/auth-profiles/session-override.test.ts
new file mode 100644
index 000000000..e4c90c3a7
--- /dev/null
+++ b/src/agents/auth-profiles/session-override.test.ts
@@ -0,0 +1,61 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+
+import type { ClawdbotConfig } from "../../config/config.js";
+import type { SessionEntry } from "../../config/sessions.js";
+import { resolveSessionAuthProfileOverride } from "./session-override.js";
+
+async function writeAuthStore(agentDir: string) {
+  const authPath = path.join(agentDir, "auth-profiles.json");
+  const payload = {
+    version: 1,
+    profiles: {
+      "zai:work": { type: "api_key", provider: "zai", key: "sk-test" },
+    },
+    order: {
+      zai: ["zai:work"],
+    },
+  };
+  await fs.writeFile(authPath, JSON.stringify(payload), "utf-8");
+}
+
+describe("resolveSessionAuthProfileOverride", () => {
+  it("keeps user override when provider alias differs", async () => {
+    const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-auth-"));
+    const prevStateDir = process.env.CLAWDBOT_STATE_DIR;
+    process.env.CLAWDBOT_STATE_DIR = tmpDir;
+    try {
+      const agentDir = path.join(tmpDir, "agent");
+      await fs.mkdir(agentDir, { recursive: true });
+      await writeAuthStore(agentDir);
+
+      const sessionEntry: SessionEntry = {
+        sessionId: "s1",
+        updatedAt: Date.now(),
+        authProfileOverride: "zai:work",
+        authProfileOverrideSource: "user",
+      };
+      const sessionStore = { "agent:main:main": sessionEntry };
+
+      const resolved = await resolveSessionAuthProfileOverride({
+        cfg: {} as ClawdbotConfig,
+        provider: "z.ai",
+        agentDir,
+        sessionEntry,
+        sessionStore,
+        sessionKey: "agent:main:main",
+        storePath: undefined,
+        isNewSession: false,
+      });
+
+      expect(resolved).toBe("zai:work");
+      expect(sessionEntry.authProfileOverride).toBe("zai:work");
+    } finally {
+      if (prevStateDir === undefined) delete process.env.CLAWDBOT_STATE_DIR;
+      else process.env.CLAWDBOT_STATE_DIR = prevStateDir;
+      await fs.rm(tmpDir, { recursive: true, force: true });
+    }
+  });
+});
diff --git a/src/agents/auth-profiles/session-override.ts b/src/agents/auth-profiles/session-override.ts
new file mode 100644
index 000000000..29e6dc01b
--- /dev/null
+++ b/src/agents/auth-profiles/session-override.ts
@@ -0,0 +1,139 @@
+import type { ClawdbotConfig } from "../../config/config.js";
+import { updateSessionStore, type SessionEntry } from "../../config/sessions.js";
+import { normalizeProviderId } from "../model-selection.js";
+import {
+  ensureAuthProfileStore,
+  isProfileInCooldown,
+  resolveAuthProfileOrder,
+} from "../auth-profiles.js";
+
+function isProfileForProvider(params: {
+  provider: string;
+  profileId: string;
+  store: ReturnType<typeof ensureAuthProfileStore>;
+}): boolean {
+  const entry = params.store.profiles[params.profileId];
+  if (!entry?.provider) return false;
+  return normalizeProviderId(entry.provider) === normalizeProviderId(params.provider);
+}
+
+export async function clearSessionAuthProfileOverride(params: {
+  sessionEntry: SessionEntry;
+  sessionStore: Record<string, SessionEntry>;
+  sessionKey: string;
+  storePath?: string;
+}) {
+  const { sessionEntry, sessionStore, sessionKey, storePath } = params;
+  delete sessionEntry.authProfileOverride;
+  delete sessionEntry.authProfileOverrideSource;
+  delete sessionEntry.authProfileOverrideCompactionCount;
+  sessionEntry.updatedAt = Date.now();
+  sessionStore[sessionKey] = sessionEntry;
+  if (storePath) {
+    await updateSessionStore(storePath, (store) => {
+      store[sessionKey] = sessionEntry;
+    });
+  }
+}
+
+export async function resolveSessionAuthProfileOverride(params: {
+  cfg: ClawdbotConfig;
+  provider: string;
+  agentDir: string;
+  sessionEntry?: SessionEntry;
+  sessionStore?: Record<string, SessionEntry>;
+  sessionKey?: string;
+  storePath?: string;
+  isNewSession: boolean;
+}): Promise<string | undefined> {
+  const {
+    cfg,
+    provider,
+    agentDir,
+    sessionEntry,
+    sessionStore,
+    sessionKey,
+    storePath,
+    isNewSession,
+  } = params;
+  if (!sessionEntry || !sessionStore || !sessionKey) return sessionEntry?.authProfileOverride;
+
+  const store = ensureAuthProfileStore(agentDir, { allowKeychainPrompt: false });
+  const order = resolveAuthProfileOrder({ cfg, store, provider });
+  let current = sessionEntry.authProfileOverride?.trim();
+
+  if (current && !store.profiles[current]) {
+    await clearSessionAuthProfileOverride({ sessionEntry, sessionStore, sessionKey, storePath });
+    current = undefined;
+  }
+
+  if (current && !isProfileForProvider({ provider, profileId: current, store })) {
+    await clearSessionAuthProfileOverride({ sessionEntry, sessionStore, sessionKey, storePath });
+    current = undefined;
+  }
+
+  if (current && order.length > 0 && !order.includes(current)) {
+    await clearSessionAuthProfileOverride({ sessionEntry, sessionStore, sessionKey, storePath });
+    current = undefined;
+  }
+
+  if (order.length === 0) return undefined;
+
+  const pickFirstAvailable = () =>
+    order.find((profileId) => !isProfileInCooldown(store, profileId)) ?? order[0];
+  const pickNextAvailable = (active: string) => {
+    const startIndex = order.indexOf(active);
+    if (startIndex < 0) return pickFirstAvailable();
+    for (let offset = 1; offset <= order.length; offset += 1) {
+      const candidate = order[(startIndex + offset) % order.length];
+      if (!isProfileInCooldown(store, candidate)) return candidate;
+    }
+    return order[startIndex] ?? order[0];
+  };
+
+  const compactionCount = sessionEntry.compactionCount ?? 0;
+  const storedCompaction =
+    typeof sessionEntry.authProfileOverrideCompactionCount === "number"
+      ? sessionEntry.authProfileOverrideCompactionCount
+      : compactionCount;
+
+  const source =
+    sessionEntry.authProfileOverrideSource ??
+    (typeof sessionEntry.authProfileOverrideCompactionCount === "number"
+      ? "auto"
+      : current
+        ? "user"
+        : undefined);
+  if (source === "user" && current && !isNewSession) {
+    return current;
+  }
+
+  let next = current;
+  if (isNewSession) {
+    next = current ? pickNextAvailable(current) : pickFirstAvailable();
+  } else if (current && compactionCount > storedCompaction) {
+    next = pickNextAvailable(current);
+  } else if (!current || isProfileInCooldown(store, current)) {
+    next = pickFirstAvailable();
+  }
+
+  if (!next) return current;
+  const shouldPersist =
+    next !== sessionEntry.authProfileOverride ||
+    sessionEntry.authProfileOverrideSource !== "auto" ||
+    sessionEntry.authProfileOverrideCompactionCount !== compactionCount;
+  if (shouldPersist) {
+    sessionEntry.authProfileOverride = next;
+    sessionEntry.authProfileOverrideSource = "auto";
+    sessionEntry.authProfileOverrideCompactionCount = compactionCount;
+    sessionEntry.updatedAt = Date.now();
+    sessionStore[sessionKey] = sessionEntry;
+    if (storePath) {
+      await updateSessionStore(storePath, (store) => {
+        store[sessionKey] = sessionEntry;
+      });
+    }
+  }
+
+  return next;
+}
diff --git a/src/agents/pi-embedded-runner.run-embedded-pi-agent.auth-profile-rotation.test.ts b/src/agents/pi-embedded-runner.run-embedded-pi-agent.auth-profile-rotation.test.ts
index 6837c4cb1..b931230af 100644
--- a/src/agents/pi-embedded-runner.run-embedded-pi-agent.auth-profile-rotation.test.ts
+++ b/src/agents/pi-embedded-runner.run-embedded-pi-agent.auth-profile-rotation.test.ts
@@ -92,13 +92,16 @@ const makeConfig = (): ClawdbotConfig =>
     },
   }) satisfies ClawdbotConfig;
 
-const writeAuthStore = async (agentDir: string) => {
+const writeAuthStore = async (agentDir: string, opts?: { includeAnthropic?: boolean }) => {
   const authPath = path.join(agentDir, "auth-profiles.json");
   const payload = {
     version: 1,
     profiles: {
       "openai:p1": { type: "api_key", provider: "openai", key: "sk-one" },
       "openai:p2": { type: "api_key", provider: "openai", key: "sk-two" },
+      ...(opts?.includeAnthropic
+        ? { "anthropic:default": { type: "api_key", provider: "anthropic", key: "sk-anth" } }
+        : {}),
     },
     usageStats: {
       "openai:p1": { lastUsed: 1 },
@@ -206,4 +209,43 @@ describe("runEmbeddedPiAgent auth profile rotation", () => {
       await fs.rm(workspaceDir, { recursive: true, force: true });
     }
   });
+
+  it("ignores user-locked profile when provider mismatches", async () => {
+    const agentDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-agent-"));
+    const workspaceDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-workspace-"));
+    try {
+      await writeAuthStore(agentDir, { includeAnthropic: true });
+
+      runEmbeddedAttemptMock.mockResolvedValueOnce(
+        makeAttempt({
+          assistantTexts: ["ok"],
+          lastAssistant: buildAssistant({
+            stopReason: "stop",
+            content: [{ type: "text", text: "ok" }],
+          }),
+        }),
+      );
+
+      await runEmbeddedPiAgent({
+        sessionId: "session:test",
+        sessionKey: "agent:test:mismatch",
+        sessionFile: path.join(workspaceDir, "session.jsonl"),
+        workspaceDir,
+        agentDir,
+        config: makeConfig(),
+        prompt: "hello",
+        provider: "openai",
+        model: "mock-1",
+        authProfileId: "anthropic:default",
+        authProfileIdSource: "user",
+        timeoutMs: 5_000,
+        runId: "run:mismatch",
+      });
+
+      expect(runEmbeddedAttemptMock).toHaveBeenCalledTimes(1);
+    } finally {
+      await fs.rm(agentDir, { recursive: true, force: true });
+      await fs.rm(workspaceDir, { recursive: true, force: true });
+    }
+  });
 });
diff --git a/src/agents/pi-embedded-runner/run.ts b/src/agents/pi-embedded-runner/run.ts
index 45a0db943..8d63a2904 100644
--- a/src/agents/pi-embedded-runner/run.ts
+++ b/src/agents/pi-embedded-runner/run.ts
@@ -23,6 +23,7 @@ import {
   resolveAuthProfileOrder,
   type ResolvedProviderAuth,
 } from "../model-auth.js";
+import { normalizeProviderId } from "../model-selection.js";
 import { ensureClawdbotModelsJson } from "../models-config.js";
 import {
   classifyFailoverReason,
@@ -116,8 +117,16 @@ export async function runEmbeddedPiAgent(
 
       const authStore = ensureAuthProfileStore(agentDir, { allowKeychainPrompt: false });
       const preferredProfileId = params.authProfileId?.trim();
-      const lockedProfileId =
-        params.authProfileIdSource === "user" ? preferredProfileId : undefined;
+      let lockedProfileId = params.authProfileIdSource === "user" ? preferredProfileId : undefined;
+      if (lockedProfileId) {
+        const lockedProfile = authStore.profiles[lockedProfileId];
+        if (
+          !lockedProfile ||
+          normalizeProviderId(lockedProfile.provider) !== normalizeProviderId(provider)
+        ) {
+          lockedProfileId = undefined;
+        }
+      }
       const profileOrder = resolveAuthProfileOrder({
         cfg: params.config,
         store: authStore,
diff --git a/src/agents/tools/session-status-tool.ts b/src/agents/tools/session-status-tool.ts
index dcf0decf8..f2cc6e980 100644
--- a/src/agents/tools/session-status-tool.ts
+++ b/src/agents/tools/session-status-tool.ts
@@ -36,6 +36,7 @@ import {
   DEFAULT_AGENT_ID,
   resolveAgentIdFromSessionKey,
 } from "../../routing/session-key.js";
+import { applyModelOverrideToSessionEntry } from "../../sessions/model-overrides.js";
 import type { AnyAgentTool } from "./common.js";
 import { readStringParam } from "./common.js";
 import { resolveInternalSessionKey, resolveMainSessionAlias } from "./sessions-helpers.js";
@@ -240,6 +241,7 @@ export function createSessionStatusTool(opts?: {
         throw new Error(`Unknown sessionKey: ${requestedKeyRaw}`);
       }
 
+      const configured = resolveDefaultModelForAgent({ cfg, agentId });
       const modelRaw = readStringParam(params, "model");
       let changedModel = false;
       if (typeof modelRaw === "string") {
@@ -249,33 +251,33 @@ export function createSessionStatusTool(opts?: {
           sessionEntry: resolved.entry,
           agentId,
         });
-        const nextEntry: SessionEntry = {
-          ...resolved.entry,
-          updatedAt: Date.now(),
-        };
-        if (selection.kind === "reset" || selection.isDefault) {
-          delete nextEntry.providerOverride;
-          delete nextEntry.modelOverride;
-          delete nextEntry.authProfileOverride;
-          delete nextEntry.authProfileOverrideSource;
-          delete nextEntry.authProfileOverrideCompactionCount;
-        } else {
-          nextEntry.providerOverride = selection.provider;
-          nextEntry.modelOverride = selection.model;
-          delete nextEntry.authProfileOverride;
-          delete nextEntry.authProfileOverrideSource;
-          delete nextEntry.authProfileOverrideCompactionCount;
-        }
-        store[resolved.key] = nextEntry;
-        await updateSessionStore(storePath, (nextStore) => {
-          nextStore[resolved.key] = nextEntry;
+        const nextEntry: SessionEntry = { ...resolved.entry };
+        const applied = applyModelOverrideToSessionEntry({
+          entry: nextEntry,
+          selection:
+            selection.kind === "reset"
+              ? {
+                  provider: configured.provider,
+                  model: configured.model,
+                  isDefault: true,
+                }
+              : {
+                  provider: selection.provider,
+                  model: selection.model,
+                  isDefault: selection.isDefault,
+                },
         });
-        resolved.entry = nextEntry;
-        changedModel = true;
+        if (applied.updated) {
+          store[resolved.key] = nextEntry;
+          await updateSessionStore(storePath, (nextStore) => {
+            nextStore[resolved.key] = nextEntry;
+          });
+          resolved.entry = nextEntry;
+          changedModel = true;
+        }
       }
 
       const agentDir = resolveAgentDir(cfg, agentId);
-      const configured = resolveDefaultModelForAgent({ cfg, agentId });
       const providerForCard = resolved.entry.providerOverride?.trim() || configured.provider;
       const usageProvider = resolveUsageProviderId(providerForCard);
       let usageLine: string | undefined;
diff --git a/src/auto-reply/reply/directive-handling.impl.ts b/src/auto-reply/reply/directive-handling.impl.ts
index 0189be238..33f19ee3f 100644
--- a/src/auto-reply/reply/directive-handling.impl.ts
+++ b/src/auto-reply/reply/directive-handling.impl.ts
@@ -10,6 +10,7 @@ import { type SessionEntry, updateSessionStore } from "../../config/sessions.js"
 import type { ExecAsk, ExecHost, ExecSecurity } from "../../infra/exec-approvals.js";
 import { enqueueSystemEvent } from "../../infra/system-events.js";
 import { applyVerboseOverride } from "../../sessions/level-overrides.js";
+import { applyModelOverrideToSessionEntry } from "../../sessions/model-overrides.js";
 import { formatThinkingLevels, formatXHighModelHint, supportsXHighThinking } from "../thinking.js";
 import type { ReplyPayload } from "../types.js";
 import {
@@ -340,22 +341,11 @@ export async function handleDirectiveOnly(params: {
       }
     }
     if (modelSelection) {
-      if (modelSelection.isDefault) {
-        delete sessionEntry.providerOverride;
-        delete sessionEntry.modelOverride;
-      } else {
-        sessionEntry.providerOverride = modelSelection.provider;
-        sessionEntry.modelOverride = modelSelection.model;
-      }
-      if (profileOverride) {
-        sessionEntry.authProfileOverride = profileOverride;
-        sessionEntry.authProfileOverrideSource = "user";
-        delete sessionEntry.authProfileOverrideCompactionCount;
-      } else if (directives.hasModelDirective) {
-        delete sessionEntry.authProfileOverride;
-        delete sessionEntry.authProfileOverrideSource;
-        delete sessionEntry.authProfileOverrideCompactionCount;
-      }
+      applyModelOverrideToSessionEntry({
+        entry: sessionEntry,
+        selection: modelSelection,
+        profileOverride,
+      });
     }
     if (directives.hasQueueDirective && directives.queueReset) {
       delete sessionEntry.queueMode;
diff --git a/src/auto-reply/reply/directive-handling.persist.ts b/src/auto-reply/reply/directive-handling.persist.ts
index e8dab44d2..4733418ba 100644
--- a/src/auto-reply/reply/directive-handling.persist.ts
+++ b/src/auto-reply/reply/directive-handling.persist.ts
@@ -16,6 +16,7 @@ import type { ClawdbotConfig } from "../../config/config.js";
 import { type SessionEntry, updateSessionStore } from "../../config/sessions.js";
 import { enqueueSystemEvent } from "../../infra/system-events.js";
 import { applyVerboseOverride } from "../../sessions/level-overrides.js";
+import { applyModelOverrideToSessionEntry } from "../../sessions/model-overrides.js";
 import { resolveProfileOverride } from "./directive-handling.auth.js";
 import type { InlineDirectives } from "./directive-handling.parse.js";
 import { formatElevatedEvent, formatReasoningEvent } from "./directive-handling.shared.js";
@@ -164,22 +165,15 @@ export async function persistInlineDirectives(params: {
           }
           const isDefault =
             resolved.ref.provider === defaultProvider && resolved.ref.model === defaultModel;
-          if (isDefault) {
-            delete sessionEntry.providerOverride;
-            delete sessionEntry.modelOverride;
-          } else {
-            sessionEntry.providerOverride = resolved.ref.provider;
-            sessionEntry.modelOverride = resolved.ref.model;
-          }
-          if (profileOverride) {
-            sessionEntry.authProfileOverride = profileOverride;
-            sessionEntry.authProfileOverrideSource = "user";
-            delete sessionEntry.authProfileOverrideCompactionCount;
-          } else if (directives.hasModelDirective) {
-            delete sessionEntry.authProfileOverride;
-            delete sessionEntry.authProfileOverrideSource;
-            delete sessionEntry.authProfileOverrideCompactionCount;
-          }
+          const { updated: modelUpdated } = applyModelOverrideToSessionEntry({
+            entry: sessionEntry,
+            selection: {
+              provider: resolved.ref.provider,
+              model: resolved.ref.model,
+              isDefault,
+            },
+            profileOverride,
+          });
           provider = resolved.ref.provider;
           model = resolved.ref.model;
           const nextLabel = `${provider}/${model}`;
@@ -189,7 +183,7 @@ export async function persistInlineDirectives(params: {
               contextKey: `model:${nextLabel}`,
             });
           }
-          updated = true;
+          updated = updated || modelUpdated;
         }
       }
     }
diff --git a/src/auto-reply/reply/get-reply-run.ts b/src/auto-reply/reply/get-reply-run.ts
index 5c5b67c1d..aa2281de6 100644
--- a/src/auto-reply/reply/get-reply-run.ts
+++ b/src/auto-reply/reply/get-reply-run.ts
@@ -5,16 +5,11 @@ import {
   isEmbeddedPiRunStreaming,
   resolveEmbeddedSessionLane,
 } from "../../agents/pi-embedded.js";
-import {
-  ensureAuthProfileStore,
-  isProfileInCooldown,
-  resolveAuthProfileOrder,
-} from "../../agents/auth-profiles.js";
+import { resolveSessionAuthProfileOverride } from "../../agents/auth-profiles/session-override.js";
 import type { ExecToolDefaults } from "../../agents/bash-tools.js";
 import type { ClawdbotConfig } from "../../config/config.js";
 import {
   resolveSessionFilePath,
-  saveSessionStore,
   type SessionEntry,
   updateSessionStore,
 } from "../../config/sessions.js";
@@ -108,92 +103,6 @@ type RunPreparedReplyParams = {
   abortedLastRun: boolean;
 };
 
-async function resolveSessionAuthProfileOverride(params: {
-  cfg: ClawdbotConfig;
-  provider: string;
-  agentDir: string;
-  sessionEntry?: SessionEntry;
-  sessionStore?: Record<string, SessionEntry>;
-  sessionKey?: string;
-  storePath?: string;
-  isNewSession: boolean;
-}): Promise<string | undefined> {
-  const {
-    cfg,
-    provider,
-    agentDir,
-    sessionEntry,
-    sessionStore,
-    sessionKey,
-    storePath,
-    isNewSession,
-  } = params;
-  if (!sessionEntry || !sessionStore || !sessionKey) return sessionEntry?.authProfileOverride;
-
-  const store = ensureAuthProfileStore(agentDir, { allowKeychainPrompt: false });
-  const order = resolveAuthProfileOrder({ cfg, store, provider });
-  if (order.length === 0) return sessionEntry.authProfileOverride;
-
-  const pickFirstAvailable = () =>
-    order.find((profileId) => !isProfileInCooldown(store, profileId)) ?? order[0];
-  const pickNextAvailable = (current: string) => {
-    const startIndex = order.indexOf(current);
-    if (startIndex < 0) return pickFirstAvailable();
-    for (let offset = 1; offset <= order.length; offset += 1) {
-      const candidate = order[(startIndex + offset) % order.length];
-      if (!isProfileInCooldown(store, candidate)) return candidate;
-    }
-    return order[startIndex] ?? order[0];
-  };
-
-  const compactionCount = sessionEntry.compactionCount ?? 0;
-  const storedCompaction =
-    typeof sessionEntry.authProfileOverrideCompactionCount === "number"
-      ? sessionEntry.authProfileOverrideCompactionCount
-      : compactionCount;
-
-  let current = sessionEntry.authProfileOverride?.trim();
-  if (current && !order.includes(current)) current = undefined;
-
-  const source =
-    sessionEntry.authProfileOverrideSource ??
-    (typeof sessionEntry.authProfileOverrideCompactionCount === "number"
-      ? "auto"
-      : current
-        ? "user"
-        : undefined);
-  if (source === "user" && current && !isNewSession) {
-    return current;
-  }
-
-  let next = current;
-  if (isNewSession) {
-    next = current ? pickNextAvailable(current) : pickFirstAvailable();
-  } else if (current && compactionCount > storedCompaction) {
-    next = pickNextAvailable(current);
-  } else if (!current || isProfileInCooldown(store, current)) {
-    next = pickFirstAvailable();
-  }
-
-  if (!next) return current;
-  const shouldPersist =
-    next !== sessionEntry.authProfileOverride ||
-    sessionEntry.authProfileOverrideSource !== "auto" ||
-    sessionEntry.authProfileOverrideCompactionCount !== compactionCount;
-  if (shouldPersist) {
-    sessionEntry.authProfileOverride = next;
-    sessionEntry.authProfileOverrideSource = "auto";
-    sessionEntry.authProfileOverrideCompactionCount = compactionCount;
-    sessionEntry.updatedAt = Date.now();
-    sessionStore[sessionKey] = sessionEntry;
-    if (storePath) {
-      await saveSessionStore(storePath, sessionStore);
-    }
-  }
-
-  return next;
-}
-
 export async function runPreparedReply(
   params: RunPreparedReplyParams,
 ): Promise<ReplyPayload | ReplyPayload[] | undefined> {
diff --git a/src/auto-reply/reply/model-selection.ts b/src/auto-reply/reply/model-selection.ts
index 37f742f1a..f1d9948a8 100644
--- a/src/auto-reply/reply/model-selection.ts
+++ b/src/auto-reply/reply/model-selection.ts
@@ -11,6 +11,8 @@ import {
 } from "../../agents/model-selection.js";
 import type { ClawdbotConfig } from "../../config/config.js";
 import { type SessionEntry, updateSessionStore } from "../../config/sessions.js";
+import { clearSessionAuthProfileOverride } from "../../agents/auth-profiles/session-override.js";
+import { applyModelOverrideToSessionEntry } from "../../sessions/model-overrides.js";
 import type { ThinkLevel } from "./directives.js";
 
 export type ModelDirectiveSelection = {
@@ -184,16 +186,19 @@ export async function createModelSelectionState(params: {
     if (overrideModel) {
       const key = modelKey(overrideProvider, overrideModel);
       if (allowedModelKeys.size > 0 && !allowedModelKeys.has(key)) {
-        delete sessionEntry.providerOverride;
-        delete sessionEntry.modelOverride;
-        sessionEntry.updatedAt = Date.now();
-        sessionStore[sessionKey] = sessionEntry;
-        if (storePath) {
-          await updateSessionStore(storePath, (store) => {
-            store[sessionKey] = sessionEntry;
-          });
+        const { updated } = applyModelOverrideToSessionEntry({
+          entry: sessionEntry,
+          selection: { provider: defaultProvider, model: defaultModel, isDefault: true },
+        });
+        if (updated) {
+          sessionStore[sessionKey] = sessionEntry;
+          if (storePath) {
+            await updateSessionStore(storePath, (store) => {
+              store[sessionKey] = sessionEntry;
+            });
+          }
         }
-        resetModelOverride = true;
+        resetModelOverride = updated;
       }
     }
   }
@@ -215,17 +220,14 @@ export async function createModelSelectionState(params: {
       allowKeychainPrompt: false,
     });
     const profile = store.profiles[sessionEntry.authProfileOverride];
-    if (!profile || profile.provider !== provider) {
-      delete sessionEntry.authProfileOverride;
-      delete sessionEntry.authProfileOverrideSource;
-      delete sessionEntry.authProfileOverrideCompactionCount;
-      sessionEntry.updatedAt = Date.now();
-      sessionStore[sessionKey] = sessionEntry;
-      if (storePath) {
-        await updateSessionStore(storePath, (store) => {
-          store[sessionKey] = sessionEntry;
-        });
-      }
+    const providerKey = normalizeProviderId(provider);
+    if (!profile || normalizeProviderId(profile.provider) !== providerKey) {
+      await clearSessionAuthProfileOverride({
+        sessionEntry,
+        sessionStore,
+        sessionKey,
+        storePath,
+      });
     }
   }
 
diff --git a/src/auto-reply/reply/session-reset-model.test.ts b/src/auto-reply/reply/session-reset-model.test.ts
index 07aeaf2f9..db840038c 100644
--- a/src/auto-reply/reply/session-reset-model.test.ts
+++ b/src/auto-reply/reply/session-reset-model.test.ts
@@ -42,6 +42,39 @@ describe("applyResetModelOverride", () => {
     expect(sessionCtx.BodyStripped).toBe("summarize");
   });
 
+  it("clears auth profile overrides when reset applies a model", async () => {
+    const cfg = {} as ClawdbotConfig;
+    const aliasIndex = buildModelAliasIndex({ cfg, defaultProvider: "openai" });
+    const sessionEntry = {
+      sessionId: "s1",
+      updatedAt: Date.now(),
+      authProfileOverride: "anthropic:default",
+      authProfileOverrideSource: "user",
+      authProfileOverrideCompactionCount: 2,
+    };
+    const sessionStore = { "agent:main:dm:1": sessionEntry };
+    const sessionCtx = { BodyStripped: "minimax summarize" };
+    const ctx = { ChatType: "direct" };
+
+    await applyResetModelOverride({
+      cfg,
+      resetTriggered: true,
+      bodyStripped: "minimax summarize",
+      sessionCtx,
+      ctx,
+      sessionEntry,
+      sessionStore,
+      sessionKey: "agent:main:dm:1",
+      defaultProvider: "openai",
+      defaultModel: "gpt-4o-mini",
+      aliasIndex,
+    });
+
+    expect(sessionEntry.authProfileOverride).toBeUndefined();
+    expect(sessionEntry.authProfileOverrideSource).toBeUndefined();
+    expect(sessionEntry.authProfileOverrideCompactionCount).toBeUndefined();
+  });
+
   it("skips when resetTriggered is false", async () => {
     const cfg = {} as ClawdbotConfig;
     const aliasIndex = buildModelAliasIndex({ cfg, defaultProvider: "openai" });
diff --git a/src/auto-reply/reply/session-reset-model.ts b/src/auto-reply/reply/session-reset-model.ts
index d14982920..9250faadd 100644
--- a/src/auto-reply/reply/session-reset-model.ts
+++ b/src/auto-reply/reply/session-reset-model.ts
@@ -12,6 +12,7 @@ import { updateSessionStore } from "../../config/sessions.js";
 import type { MsgContext, TemplateContext } from "../templating.js";
 import { formatInboundBodyWithSenderMeta } from "./inbound-sender-meta.js";
 import { resolveModelDirectiveSelection, type ModelDirectiveSelection } from "./model-selection.js";
+import { applyModelOverrideToSessionEntry } from "../../sessions/model-overrides.js";
 
 type ResetModelResult = {
   selection?: ModelDirectiveSelection;
@@ -62,25 +63,11 @@ function applySelectionToSession(params: {
 }) {
   const { selection, sessionEntry, sessionStore, sessionKey, storePath } = params;
   if (!sessionEntry || !sessionStore || !sessionKey) return;
-  let updated = false;
-  if (selection.isDefault) {
-    if (sessionEntry.providerOverride || sessionEntry.modelOverride) {
-      delete sessionEntry.providerOverride;
-      delete sessionEntry.modelOverride;
-      updated = true;
-    }
-  } else {
-    if (sessionEntry.providerOverride !== selection.provider) {
-      sessionEntry.providerOverride = selection.provider;
-      updated = true;
-    }
-    if (sessionEntry.modelOverride !== selection.model) {
-      sessionEntry.modelOverride = selection.model;
-      updated = true;
-    }
-  }
+  const { updated } = applyModelOverrideToSessionEntry({
+    entry: sessionEntry,
+    selection,
+  });
   if (!updated) return;
-  sessionEntry.updatedAt = Date.now();
   sessionStore[sessionKey] = sessionEntry;
   if (storePath) {
     updateSessionStore(storePath, (store) => {
diff --git a/src/commands/agent.ts b/src/commands/agent.ts
index bc7f79941..9033759f4 100644
--- a/src/commands/agent.ts
+++ b/src/commands/agent.ts
@@ -50,6 +50,8 @@ import { defaultRuntime, type RuntimeEnv } from "../runtime.js";
 import { formatCliCommand } from "../cli/command-format.js";
 import { applyVerboseOverride } from "../sessions/level-overrides.js";
 import { resolveSendPolicy } from "../sessions/send-policy.js";
+import { applyModelOverrideToSessionEntry } from "../sessions/model-overrides.js";
+import { clearSessionAuthProfileOverride } from "../agents/auth-profiles/session-override.js";
 import { resolveMessageChannel } from "../utils/message-channel.js";
 import { deliverAgentCommandResult } from "./agent/delivery.js";
 import { resolveAgentRunContext } from "./agent/run-context.js";
@@ -283,13 +285,16 @@ export async function agentCommand(
           allowedModelKeys.size > 0 &&
           !allowedModelKeys.has(key)
         ) {
-          delete entry.providerOverride;
-          delete entry.modelOverride;
-          entry.updatedAt = Date.now();
-          sessionStore[sessionKey] = entry;
-          await updateSessionStore(storePath, (store) => {
-            store[sessionKey] = entry;
+          const { updated } = applyModelOverrideToSessionEntry({
+            entry,
+            selection: { provider: defaultProvider, model: defaultModel, isDefault: true },
           });
+          if (updated) {
+            sessionStore[sessionKey] = entry;
+            await updateSessionStore(storePath, (store) => {
+              store[sessionKey] = entry;
+            });
+          }
         }
       }
     }
@@ -315,14 +320,12 @@ export async function agentCommand(
         const store = ensureAuthProfileStore();
         const profile = store.profiles[authProfileId];
         if (!profile || profile.provider !== provider) {
-          delete entry.authProfileOverride;
-          delete entry.authProfileOverrideSource;
-          delete entry.authProfileOverrideCompactionCount;
-          entry.updatedAt = Date.now();
           if (sessionStore && sessionKey) {
-            sessionStore[sessionKey] = entry;
-            await updateSessionStore(storePath, (store) => {
-              store[sessionKey] = entry;
+            await clearSessionAuthProfileOverride({
+              sessionEntry: entry,
+              sessionStore,
+              sessionKey,
+              storePath,
             });
           }
         }
diff --git a/src/gateway/sessions-patch.test.ts b/src/gateway/sessions-patch.test.ts
index cd330fa0a..96ba0bf75 100644
--- a/src/gateway/sessions-patch.test.ts
+++ b/src/gateway/sessions-patch.test.ts
@@ -57,4 +57,32 @@ describe("gateway sessions patch", () => {
     if (res.ok) return;
     expect(res.error.message).toContain("invalid elevatedLevel");
   });
+
+  test("clears auth overrides when model patch changes", async () => {
+    const store: Record<string, SessionEntry> = {
+      "agent:main:main": {
+        sessionId: "sess",
+        updatedAt: 1,
+        providerOverride: "anthropic",
+        modelOverride: "claude-opus-4-5",
+        authProfileOverride: "anthropic:default",
+        authProfileOverrideSource: "user",
+        authProfileOverrideCompactionCount: 3,
+      } as SessionEntry,
+    };
+    const res = await applySessionsPatchToStore({
+      cfg: {} as ClawdbotConfig,
+      store,
+      storeKey: "agent:main:main",
+      patch: { model: "openai/gpt-5.2" },
+      loadGatewayModelCatalog: async () => [{ provider: "openai", id: "gpt-5.2" }],
+    });
+    expect(res.ok).toBe(true);
+    if (!res.ok) return;
+    expect(res.entry.providerOverride).toBe("openai");
+    expect(res.entry.modelOverride).toBe("gpt-5.2");
+    expect(res.entry.authProfileOverride).toBeUndefined();
+    expect(res.entry.authProfileOverrideSource).toBeUndefined();
+    expect(res.entry.authProfileOverrideCompactionCount).toBeUndefined();
+  });
 });
diff --git a/src/gateway/sessions-patch.ts b/src/gateway/sessions-patch.ts
index e7d7780cd..1a3736971 100644
--- a/src/gateway/sessions-patch.ts
+++ b/src/gateway/sessions-patch.ts
@@ -19,6 +19,7 @@ import { isSubagentSessionKey } from "../routing/session-key.js";
 import { applyVerboseOverride, parseVerboseOverride } from "../sessions/level-overrides.js";
 import { normalizeSendPolicy } from "../sessions/send-policy.js";
 import { parseSessionLabel } from "../sessions/session-label.js";
+import { applyModelOverrideToSessionEntry } from "../sessions/model-overrides.js";
 import {
   ErrorCodes,
   type ErrorShape,
@@ -220,18 +221,23 @@ export async function applySessionsPatchToStore(params: {
 
   if ("model" in patch) {
     const raw = patch.model;
+    const resolvedDefault = resolveConfiguredModelRef({
+      cfg,
+      defaultProvider: DEFAULT_PROVIDER,
+      defaultModel: DEFAULT_MODEL,
+    });
     if (raw === null) {
-      delete next.providerOverride;
-      delete next.modelOverride;
+      applyModelOverrideToSessionEntry({
+        entry: next,
+        selection: {
+          provider: resolvedDefault.provider,
+          model: resolvedDefault.model,
+          isDefault: true,
+        },
+      });
     } else if (raw !== undefined) {
       const trimmed = String(raw).trim();
       if (!trimmed) return invalid("invalid model: empty");
-
-      const resolvedDefault = resolveConfiguredModelRef({
-        cfg,
-        defaultProvider: DEFAULT_PROVIDER,
-        defaultModel: DEFAULT_MODEL,
-      });
       if (!params.loadGatewayModelCatalog) {
         return {
           ok: false,
@@ -249,16 +255,17 @@ export async function applySessionsPatchToStore(params: {
       if ("error" in resolved) {
         return invalid(resolved.error);
       }
-      if (
+      const isDefault =
         resolved.ref.provider === resolvedDefault.provider &&
-        resolved.ref.model === resolvedDefault.model
-      ) {
-        delete next.providerOverride;
-        delete next.modelOverride;
-      } else {
-        next.providerOverride = resolved.ref.provider;
-        next.modelOverride = resolved.ref.model;
-      }
+        resolved.ref.model === resolvedDefault.model;
+      applyModelOverrideToSessionEntry({
+        entry: next,
+        selection: {
+          provider: resolved.ref.provider,
+          model: resolved.ref.model,
+          isDefault,
+        },
+      });
     }
   }
 
diff --git a/src/sessions/model-overrides.ts b/src/sessions/model-overrides.ts
new file mode 100644
index 000000000..97795d98d
--- /dev/null
+++ b/src/sessions/model-overrides.ts
@@ -0,0 +1,72 @@
+import type { SessionEntry } from "../config/sessions.js";
+
+export type ModelOverrideSelection = {
+  provider: string;
+  model: string;
+  isDefault?: boolean;
+};
+
+export function applyModelOverrideToSessionEntry(params: {
+  entry: SessionEntry;
+  selection: ModelOverrideSelection;
+  profileOverride?: string;
+  profileOverrideSource?: "auto" | "user";
+}): { updated: boolean } {
+  const { entry, selection, profileOverride } = params;
+  const profileOverrideSource = params.profileOverrideSource ?? "user";
+  let updated = false;
+
+  if (selection.isDefault) {
+    if (entry.providerOverride) {
+      delete entry.providerOverride;
+      updated = true;
+    }
+    if (entry.modelOverride) {
+      delete entry.modelOverride;
+      updated = true;
+    }
+  } else {
+    if (entry.providerOverride !== selection.provider) {
+      entry.providerOverride = selection.provider;
+      updated = true;
+    }
+    if (entry.modelOverride !== selection.model) {
+      entry.modelOverride = selection.model;
+      updated = true;
+    }
+  }
+
+  if (profileOverride) {
+    if (entry.authProfileOverride !== profileOverride) {
+      entry.authProfileOverride = profileOverride;
+      updated = true;
+    }
+    if (entry.authProfileOverrideSource !== profileOverrideSource) {
+      entry.authProfileOverrideSource = profileOverrideSource;
+      updated = true;
+    }
+    if (entry.authProfileOverrideCompactionCount !== undefined) {
+      delete entry.authProfileOverrideCompactionCount;
+      updated = true;
+    }
+  } else {
+    if (entry.authProfileOverride) {
+      delete entry.authProfileOverride;
+      updated = true;
+    }
+    if (entry.authProfileOverrideSource) {
+      delete entry.authProfileOverrideSource;
+      updated = true;
+    }
+    if (entry.authProfileOverrideCompactionCount !== undefined) {
+      delete entry.authProfileOverrideCompactionCount;
+      updated = true;
+    }
+  }
+
+  if (updated) {
+    entry.updatedAt = Date.now();
+  }
+
+  return { updated };
+}