diff --git a/README.md b/README.md
index a5e3fc3..ebb7c6a 100644
--- a/README.md
+++ b/README.md
@@ -2138,3 +2138,10 @@ MIT License
   - `dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify_permission_policy_cleanup\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_cleanup\\` 경고 0 / 오류 0
   - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "OperationModePolicyTests|OperationModeReadinessTests|AgentLoopE2ETests" -p:OutputPath=bin\\verify_permission_policy_cleanup_tests\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_cleanup_tests\\` 통과 46
   - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "LlmOperationModeTests" -p:OutputPath=bin\\verify_permission_policy_llm_tests\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_llm_tests\\` 통과 3
+
+업데이트: 2026-04-15 16:40 (KST)
+- 사내 모드의 외부 LLM 정의를 테스트와 문서로 고정했습니다. 현재 기준 외부 LLM은 `Gemini`, `Claude`만 의미하며, `Ollama`, `vLLM`은 사내/사외 모드 모두 사용 가능합니다.
+- [LlmOperationModeTests.cs](/E:/AX%20Copilot%20-%20Codex/src/AxCopilot.Tests/Services/LlmOperationModeTests.cs)를 UTF-8 기준으로 정리하고, 사내 모드에서 `Ollama`, `vLLM`이 외부 LLM 차단 가드에 막히지 않고 다음 단계까지 진행되는 회귀 테스트를 추가했습니다.
+- 검증:
+  - `dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify_internal_llm_scope\\ -p:IntermediateOutputPath=obj\\verify_internal_llm_scope\\` 경고 0 / 오류 0
+  - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "LlmOperationModeTests" -p:OutputPath=bin\\verify_internal_llm_scope_tests\\ -p:IntermediateOutputPath=obj\\verify_internal_llm_scope_tests\\` 통과 5
diff --git a/docs/DEVELOPMENT.md b/docs/DEVELOPMENT.md
index 86ad701..893ecda 100644
--- a/docs/DEVELOPMENT.md
+++ b/docs/DEVELOPMENT.md
@@ -1470,3 +1470,16 @@ UI ?붿옄???€洹쒕え 由ы뙥?좊쭅 ???꾪뿕 ?묒뾽 ??湲곕줉???덉쟾
   - `dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify_permission_policy_cleanup\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_cleanup\\` 경고 0 / 오류 0
   - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "OperationModePolicyTests|OperationModeReadinessTests|AgentLoopE2ETests" -p:OutputPath=bin\\verify_permission_policy_cleanup_tests\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_cleanup_tests\\` 통과 46
   - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "LlmOperationModeTests" -p:OutputPath=bin\\verify_permission_policy_llm_tests\\ -p:IntermediateOutputPath=obj\\verify_permission_policy_llm_tests\\` 통과 3
+
+업데이트: 2026-04-15 16:40 (KST)
+
+### 사내 모드 외부 LLM 범위 고정
+- `src/AxCopilot.Tests/Services/LlmOperationModeTests.cs`
+  - 인코딩이 깨져 있던 기존 테스트를 UTF-8 기준으로 정리했습니다.
+  - 사내 모드에서 `Gemini`, `Claude`만 외부 LLM 차단 대상으로 보고, `Ollama`, `vLLM`은 차단 가드를 통과해야 한다는 회귀 테스트를 추가했습니다.
+- 정책 기준
+  - 외부 LLM: `Gemini`, `Claude`
+  - 사내/사외 모두 허용: `Ollama`, `vLLM`
+- 검증
+  - `dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify_internal_llm_scope\\ -p:IntermediateOutputPath=obj\\verify_internal_llm_scope\\` 경고 0 / 오류 0
+  - `dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter "LlmOperationModeTests" -p:OutputPath=bin\\verify_internal_llm_scope_tests\\ -p:IntermediateOutputPath=obj\\verify_internal_llm_scope_tests\\` 통과 5
diff --git a/src/AxCopilot.Tests/Services/LlmOperationModeTests.cs b/src/AxCopilot.Tests/Services/LlmOperationModeTests.cs
index 8448403..af2e3bf 100644
--- a/src/AxCopilot.Tests/Services/LlmOperationModeTests.cs
+++ b/src/AxCopilot.Tests/Services/LlmOperationModeTests.cs
@@ -22,8 +22,8 @@ public class LlmOperationModeTests
             [new ChatMessage { Role = "user", Content = "test" }]);
 
         var ex = await action.Should().ThrowAsync<InvalidOperationException>();
-        ex.Which.Message.Should().Contain("사내 모드");
-        ex.Which.Message.Should().Contain("외부 LLM 호출이 차단");
+        ex.Which.Message.Should().Contain("외부 LLM 호출이 차단됩니다");
+        ex.Which.Message.Should().Contain("Gemini");
     }
 
     [Fact]
@@ -42,7 +42,7 @@ public class LlmOperationModeTests
             tools);
 
         var ex = await action.Should().ThrowAsync<InvalidOperationException>();
-        ex.Which.Message.Should().Contain("사내 모드");
+        ex.Which.Message.Should().Contain("외부 LLM 호출이 차단됩니다");
         ex.Which.Message.Should().Contain("Claude");
     }
 
@@ -61,8 +61,49 @@ public class LlmOperationModeTests
             [new ChatMessage { Role = "user", Content = "test" }]);
 
         var ex = await action.Should().ThrowAsync<InvalidOperationException>();
-        ex.Which.Message.Should().NotContain("사내 모드에서는 외부 LLM 호출이 차단");
-        ex.Which.Message.Should().Contain("API 키");
+        ex.Which.Message.Should().NotContain("외부 LLM 호출이 차단됩니다");
+        ex.Which.Message.Should().Contain("API");
+    }
+
+    [Fact]
+    public async Task SendAsync_InternalMode_AllowsOllamaToProceedPastExternalLlmGuard()
+    {
+        var settings = new SettingsService();
+        settings.Settings.OperationMode = OperationModePolicy.InternalMode;
+        settings.Settings.Llm.Service = "ollama";
+        settings.Settings.Llm.Model = "qwen2.5-coder";
+        settings.Settings.Llm.OllamaModel = "qwen2.5-coder";
+        settings.Settings.Llm.OllamaEndpoint = "http://127.0.0.1:1";
+
+        using var llm = new LlmService(settings);
+
+        var action = async () => await llm.SendAsync(
+            [new ChatMessage { Role = "user", Content = "test" }]);
+
+        var ex = await action.Should().ThrowAsync<Exception>();
+        ex.Which.Message.Should().NotContain("외부 LLM 호출이 차단됩니다");
+        ex.Which.Message.Should().NotContain("Gemini");
+        ex.Which.Message.Should().NotContain("Claude");
+    }
+
+    [Fact]
+    public async Task SendAsync_InternalMode_AllowsVllmToProceedPastExternalLlmGuard()
+    {
+        var settings = new SettingsService();
+        settings.Settings.OperationMode = OperationModePolicy.InternalMode;
+        settings.Settings.Llm.Service = "vllm";
+        settings.Settings.Llm.Model = "qwen2.5-coder";
+        settings.Settings.Llm.VllmModel = "qwen2.5-coder";
+        settings.Settings.Llm.VllmEndpoint = "http://127.0.0.1:1";
+
+        using var llm = new LlmService(settings);
+
+        var action = async () => await llm.SendAsync(
+            [new ChatMessage { Role = "user", Content = "test" }]);
+
+        var ex = await action.Should().ThrowAsync<Exception>();
+        ex.Which.Message.Should().NotContain("외부 LLM 호출이 차단됩니다");
+        ex.Which.Message.Should().NotContain("Gemini");
+        ex.Which.Message.Should().NotContain("Claude");
     }
 }
-