diff --git a/src/renderer/src/App.test.tsx b/src/renderer/src/App.test.tsx
index 7c00b55c..787f419f 100644
--- a/src/renderer/src/App.test.tsx
+++ b/src/renderer/src/App.test.tsx
@@ -6351,7 +6351,7 @@ describe("App", () => {
         name: /^OpenCode · 默认模型.*sonnet-5$/u,
       }),
     ).toBeInTheDocument();
-    expect(within(runtimeMenu).getAllByRole("menuitemradio")).toHaveLength(2);
+    expect(within(runtimeMenu).getAllByRole("menuitemradio")).toHaveLength(1);
     expect(within(runtimeMenu).queryByText("直连模型")).not.toBeInTheDocument();
     expect(
       within(runtimeMenu).queryByText("Continue Runtime"),
@@ -8539,7 +8539,7 @@ describe("App", () => {
     expect(openCodeModel).toBeEnabled();
     expect(continueModel).toBeEnabled();
     expect(deepseekHarness).toBeEnabled();
-    expect(screen.getAllByRole("menuitemradio")).toHaveLength(10);
+    expect(screen.getAllByRole("menuitemradio")).toHaveLength(6);
     expect(within(runtimeMenu).getAllByRole("separator")).toHaveLength(4);
     expect(within(runtimeMenu).queryByRole("menu")).not.toBeInTheDocument();
     expect(
diff --git a/src/renderer/src/App.tsx b/src/renderer/src/App.tsx
index 307cf687..fcee3ccb 100644
--- a/src/renderer/src/App.tsx
+++ b/src/renderer/src/App.tsx
@@ -76,8 +76,6 @@ import type {
 } from "../../shared/contracts";
 import {
   defaultContextCompressionSettings,
-  isAgentRuntimeModelProtocol,
-  isDeepSeekHarnessModelProfile,
   maximumPastedImageBytes,
 } from "../../shared/contracts";
 import {
@@ -9802,26 +9800,6 @@ function App(): React.JSX.Element {
                                       >
                                         <span>{t("runtime.manage")}</span>
                                       </button>
-                                      {runtimeSettings && (
-                                        <>
-                                          <strong role="presentation">{t("runtime.fixedRuntimeModel")}</strong>
-                                          {(["opencode", "continue", "deepseek-harness"] as const).flatMap((provider) =>
-                                            runtimeSettings.modelProfiles.filter((profile) =>
-                                              (!activeProjectUsesManagedSsh || provider === "opencode") &&
-                                              (provider === "deepseek-harness" ? isDeepSeekHarnessModelProfile(profile) : isAgentRuntimeModelProtocol(profile.protocol))
-                                            ).map((profile) => {
-                                              const selection = { provider, profileId: profile.id };
-                                              const selected = activeRuntimeSelectionKey === agentRuntimeSelectionKey(selection);
-                                              return <button key={`${provider}:${profile.id}`} type="button" role="menuitemradio"
-                                                aria-checked={selected} tabIndex={selected ? 0 : -1}
-                                                onClick={() => void switchRuntime(selection)}>
-                                                <span>{t("runtime.fixedModel")} · {provider === "opencode" ? "OpenCode" : provider === "continue" ? "Continue" : "DeepSeek Harness"} · {profile.name}</span>
-                                                <small>{profile.modelName}</small>
-                                              </button>;
-                                            })
-                                          )}
-                                        </>
-                                      )}
                                     </div>
                                   )}
                                 </div>
diff --git a/src/renderer/src/ProjectRuntimeSelector.test.tsx b/src/renderer/src/ProjectRuntimeSelector.test.tsx
deleted file mode 100644
index d2d07898..00000000
--- a/src/renderer/src/ProjectRuntimeSelector.test.tsx
+++ /dev/null
@@ -1,43 +0,0 @@
-import { cleanup, fireEvent, render, screen } from '@testing-library/react'
-import { afterEach, describe, expect, it, vi } from 'vitest'
-import { defaultRuntimeSettings, type RuntimeSettings } from '../../shared/contracts'
-import { ProjectRuntimeSelector } from './ProjectRuntimeSelector'
-import i18n from './i18n'
-
-afterEach(cleanup)
-
-describe('ProjectRuntimeSelector rules', () => {
-  it('allows fixed Runtime models and switching back to a profile-free reference', async () => {
-    await i18n.changeLanguage('zh-CN')
-    const profileId = '00000000-0000-4000-8000-000000000011'
-    const settings = {
-      ...defaultRuntimeSettings,
-      defaultModelProfileId: profileId,
-      modelProfiles: [{
-        id: profileId, name: 'Model A', modelName: 'model-a',
-        baseUrl: 'https://example.com/v1', protocol: 'openai-chat-completions',
-        authentication: 'api-key', apiKeyConfigured: true
-      }]
-    } as RuntimeSettings
-    const onChange = vi.fn()
-    const props = {
-      ariaLabel: 'Project Runtime', label: 'Runtime', onChange,
-      runtimeSettings: settings
-    }
-    const view = render(<ProjectRuntimeSelector {...props} selection={{ provider: 'opencode' }} />)
-    const select = screen.getByRole('combobox')
-    for (const provider of ['opencode', 'continue', 'deepseek-harness'] as const) {
-      expect(screen.getByRole('option', {
-        name: `${provider === 'opencode' ? 'OpenCode' : provider === 'continue' ? 'Continue' : 'DeepSeek Harness'} · Model A`
-      })).toHaveValue(`${provider}:${profileId}`)
-      fireEvent.change(select, { target: { value: `${provider}:${profileId}` } })
-      expect(onChange).toHaveBeenLastCalledWith({ provider, profileId })
-    }
-    view.rerender(<ProjectRuntimeSelector {...props} selection={{ provider: 'opencode', profileId }} />)
-    expect(screen.getByText('通过 OpenCode 运行，固定使用 Model A。')).toBeInTheDocument()
-    fireEvent.change(select, { target: { value: 'opencode:default' } })
-    expect(onChange).toHaveBeenLastCalledWith({ provider: 'opencode' })
-    fireEvent.change(select, { target: { value: 'model:default' } })
-    expect(onChange).toHaveBeenLastCalledWith({ provider: 'model' })
-  })
-})
diff --git a/src/renderer/src/ProjectRuntimeSelector.tsx b/src/renderer/src/ProjectRuntimeSelector.tsx
index d944580f..ddb92766 100644
--- a/src/renderer/src/ProjectRuntimeSelector.tsx
+++ b/src/renderer/src/ProjectRuntimeSelector.tsx
@@ -1,10 +1,6 @@
-import type { TFunction } from 'i18next'
+import type { TFunction } from 'i18next'
 import { useTranslation } from 'react-i18next'
-import {
-  isAgentRuntimeModelProtocol,
-  isDeepSeekHarnessModelProfile,
-  type RuntimeSettings
-} from '../../shared/contracts'
+import type { RuntimeSettings } from '../../shared/contracts'
 import {
   agentRuntimeSelectionKey,
   getRuntimeSelectionForProvider,
@@ -58,15 +54,6 @@ function runtimeSelectionDescription(
       : selection.provider === 'continue'
         ? 'Continue'
         : 'DeepSeek Harness'
-  if (selection.profileId) {
-    const profile = settings.modelProfiles.find(
-      (candidate) => candidate.id === selection.profileId
-    )
-    return t('channels.project.fixedRuntimeDescription', {
-      runtime: runtimeLabel,
-      name: profile?.name ?? t('channels.project.missingProfile')
-    })
-  }
   return t('channels.project.runtimeDescription', {
     runtime: runtimeLabel
   })
@@ -121,22 +108,9 @@ export function ProjectRuntimeSelector({
     ...(selectionMode === 'configured' ? [{ provider: 'auto' as const }] : []),
     { provider: 'model' }
   ]
-  const fixedRuntimeSelections = selectionMode === 'configured'
-    ? runtimeProviders.flatMap((provider) =>
-        directProfiles.filter((profile) =>
-          provider === 'deepseek-harness'
-            ? isDeepSeekHarnessModelProfile(profile)
-            : isAgentRuntimeModelProtocol(profile.protocol)
-        ).map((profile) => ({ provider, profileId: profile.id }))
-      )
-    : []
   const fixedRuntimeSelection = runtimeSelection.provider !== 'model' &&
-    'profileId' in runtimeSelection && runtimeSelection.profileId &&
-    !fixedRuntimeSelections.some((candidate) =>
-      agentRuntimeSelectionKey(candidate) === agentRuntimeSelectionKey(runtimeSelection)
-    ) ? runtimeSelection : undefined
+    'profileId' in runtimeSelection && runtimeSelection.profileId ? runtimeSelection : undefined
   const selections = [...inheritedSelections, ...directSelections, ...runtimeSelections,
-    ...fixedRuntimeSelections,
     ...(fixedRuntimeSelection ? [fixedRuntimeSelection] : [])]
   const selectionByKey = new Map(
     selections.map((candidate) => [
@@ -216,19 +190,6 @@ export function ProjectRuntimeSelector({
             </option>
           ))}
         </optgroup>
-        {fixedRuntimeSelections.length > 0 && (
-          <optgroup label={t('channels.project.fixedRuntimeModels')}>
-            {fixedRuntimeSelections.map((candidate) => (
-              <option
-                key={agentRuntimeSelectionKey(candidate)}
-                value={agentRuntimeSelectionKey(candidate)}
-              >
-                {candidate.provider === 'opencode' ? 'OpenCode' : candidate.provider === 'continue' ? 'Continue' : 'DeepSeek Harness'}
-                {' · '}{runtimeSettings.modelProfiles.find((profile) => profile.id === candidate.profileId)?.name}
-              </option>
-            ))}
-          </optgroup>
-        )}
       </select>
       <small>
         {runtimeSelectionDescription(
diff --git a/src/renderer/src/i18n/locales/en-US/app.ts b/src/renderer/src/i18n/locales/en-US/app.ts
index 4a30b60e..8384a031 100644
--- a/src/renderer/src/i18n/locales/en-US/app.ts
+++ b/src/renderer/src/i18n/locales/en-US/app.ts
@@ -210,8 +210,6 @@ export const app = {
     picker: 'Runtime and model',
     directModels: 'Direct models',
     defaultDirect: 'Direct · Follow the global default model',
-    fixedRuntimeModel: 'Fixed Runtime model',
-    fixedModel: 'Fixed',
     deepseekHarnessGroup:
       'DeepSeek Harness (Developer preview · OpenAI-compatible)',
     manage: 'Manage Runtime and model connections',
diff --git a/src/renderer/src/i18n/locales/en-US/integrations.ts b/src/renderer/src/i18n/locales/en-US/integrations.ts
index dd3564dc..cbad87e2 100644
--- a/src/renderer/src/i18n/locales/en-US/integrations.ts
+++ b/src/renderer/src/i18n/locales/en-US/integrations.ts
@@ -46,8 +46,6 @@ export const integrations = {
       directDescription:
         'Process messages directly with {{name}} ({{modelName}}).',
       defaultDirect: 'Direct · Follow the global default model',
-      fixedRuntimeModels: 'Agent Runtime · Fixed model',
-      fixedRuntimeDescription: 'Run through {{runtime}} with the fixed model {{name}}.',
       automaticDescription:
         'Follow the global default Runtime setting.',
       runtimeDescription:
diff --git a/src/renderer/src/i18n/locales/zh-CN/app.ts b/src/renderer/src/i18n/locales/zh-CN/app.ts
index 344e62d7..dce86666 100644
--- a/src/renderer/src/i18n/locales/zh-CN/app.ts
+++ b/src/renderer/src/i18n/locales/zh-CN/app.ts
@@ -197,8 +197,6 @@ export const app = {
     picker: 'Runtime 和模型',
     directModels: '直连模型',
     defaultDirect: '直连 · 跟随全局默认模型',
-    fixedRuntimeModel: '固定 Runtime 模型',
-    fixedModel: '固定',
     deepseekHarnessGroup:
       'DeepSeek Harness（开发者预览 · OpenAI 兼容）',
     manage: '管理 Runtime 和模型连接',
diff --git a/src/renderer/src/i18n/locales/zh-CN/integrations.ts b/src/renderer/src/i18n/locales/zh-CN/integrations.ts
index c8242960..b82d1e34 100644
--- a/src/renderer/src/i18n/locales/zh-CN/integrations.ts
+++ b/src/renderer/src/i18n/locales/zh-CN/integrations.ts
@@ -40,8 +40,6 @@ export const integrations = {
         '直接使用 {{name}}（{{modelName}}）处理消息。',
       automaticDescription: '跟随全局 Runtime 默认设置',
       defaultDirect: '直连 · 跟随全局默认模型',
-      fixedRuntimeModels: 'Agent Runtime · 固定模型',
-      fixedRuntimeDescription: '通过 {{runtime}} 运行，固定使用 {{name}}。',
       runtimeDescription:
         '通过 {{runtime}} Agent Runtime 运行，并跟随“Agent Runtime”设置中的全局 {{runtime}} 配置。',
       defaultMode: '默认模式',