diff --git a/internal/registry/model_definitions.go b/internal/registry/model_definitions.go
index a5120d2d..bbc49dc8 100644
--- a/internal/registry/model_definitions.go
+++ b/internal/registry/model_definitions.go
@@ -124,26 +124,53 @@ func GetGeminiModels() []*ModelInfo { return GeminiModels() }
 
 // GetGeminiCLIModels returns the standard Gemini model definitions
 func GetGeminiCLIModels() []*ModelInfo {
-	base := GeminiModels()
-	return append(base,
-		[]*ModelInfo{
-			{
-				ID:                         "gemini-3-pro-preview-11-2025",
-				Object:                     "model",
-				Created:                    time.Now().Unix(),
-				OwnedBy:                    "google",
-				Type:                       "gemini",
-				Name:                       "models/gemini-3-pro-preview-11-2025",
-				Version:                    "3",
-				DisplayName:                "Gemini 3 Pro Preview 11-2025",
-				Description:                "Latest preview of Gemini Pro",
-				InputTokenLimit:            1048576,
-				OutputTokenLimit:           65536,
-				SupportedGenerationMethods: []string{"generateContent", "countTokens", "createCachedContent", "batchGenerateContent"},
-				Thinking:                   &ThinkingSupport{Min: 128, Max: 32768, ZeroAllowed: false, DynamicAllowed: true},
-			},
-		}...,
-	)
+	return []*ModelInfo{
+		{
+			ID:                         "gemini-2.5-flash",
+			Object:                     "model",
+			Created:                    time.Now().Unix(),
+			OwnedBy:                    "google",
+			Type:                       "gemini",
+			Name:                       "models/gemini-2.5-flash",
+			Version:                    "001",
+			DisplayName:                "Gemini 2.5 Flash",
+			Description:                "Stable version of Gemini 2.5 Flash, our mid-size multimodal model that supports up to 1 million tokens, released in June of 2025.",
+			InputTokenLimit:            1048576,
+			OutputTokenLimit:           65536,
+			SupportedGenerationMethods: []string{"generateContent", "countTokens", "createCachedContent", "batchGenerateContent"},
+			Thinking:                   &ThinkingSupport{Min: 0, Max: 24576, ZeroAllowed: true, DynamicAllowed: true},
+		},
+		{
+			ID:                         "gemini-2.5-pro",
+			Object:                     "model",
+			Created:                    time.Now().Unix(),
+			OwnedBy:                    "google",
+			Type:                       "gemini",
+			Name:                       "models/gemini-2.5-pro",
+			Version:                    "2.5",
+			DisplayName:                "Gemini 2.5 Pro",
+			Description:                "Stable release (June 17th, 2025) of Gemini 2.5 Pro",
+			InputTokenLimit:            1048576,
+			OutputTokenLimit:           65536,
+			SupportedGenerationMethods: []string{"generateContent", "countTokens", "createCachedContent", "batchGenerateContent"},
+			Thinking:                   &ThinkingSupport{Min: 128, Max: 32768, ZeroAllowed: false, DynamicAllowed: true},
+		},
+		{
+			ID:                         "gemini-3-pro-preview-11-2025",
+			Object:                     "model",
+			Created:                    time.Now().Unix(),
+			OwnedBy:                    "google",
+			Type:                       "gemini",
+			Name:                       "models/gemini-3-pro-preview-11-2025",
+			Version:                    "3",
+			DisplayName:                "Gemini 3 Pro Preview 11-2025",
+			Description:                "Latest preview of Gemini Pro",
+			InputTokenLimit:            1048576,
+			OutputTokenLimit:           65536,
+			SupportedGenerationMethods: []string{"generateContent", "countTokens", "createCachedContent", "batchGenerateContent"},
+			Thinking:                   &ThinkingSupport{Min: 128, Max: 32768, ZeroAllowed: false, DynamicAllowed: true},
+		},
+	}
 }
 
 // GetAIStudioModels returns the Gemini model definitions for AI Studio integrations