diff --git a/FirebaseAI/Tests/TestApp/Sources/Constants.swift b/FirebaseAI/Tests/TestApp/Sources/Constants.swift
index 4f88a39448b..6ed79da5aae 100644
--- a/FirebaseAI/Tests/TestApp/Sources/Constants.swift
+++ b/FirebaseAI/Tests/TestApp/Sources/Constants.swift
@@ -30,5 +30,6 @@ public enum ModelNames {
   public static let gemini2_5_FlashLite = "gemini-2.5-flash-lite"
   public static let gemini2_5_FlashLivePreview = "gemini-live-2.5-flash-preview"
   public static let gemini2_5_Pro = "gemini-2.5-pro"
+  public static let gemini3FlashPreview = "gemini-3-flash-preview"
   public static let gemma3_4B = "gemma-3-4b-it"
 }
diff --git a/FirebaseAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift b/FirebaseAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
index 046d49ff4c0..f8102f70229 100644
--- a/FirebaseAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
+++ b/FirebaseAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift
@@ -53,10 +53,12 @@ struct GenerateContentIntegrationTests {
     (InstanceConfig.vertexAI_v1beta_global_appCheckLimitedUse, ModelNames.gemini2FlashLite),
     (InstanceConfig.googleAI_v1beta, ModelNames.gemini2FlashLite),
     (InstanceConfig.googleAI_v1beta_appCheckLimitedUse, ModelNames.gemini2FlashLite),
+    (InstanceConfig.googleAI_v1beta, ModelNames.gemini3FlashPreview),
+    (InstanceConfig.googleAI_v1beta_appCheckLimitedUse, ModelNames.gemini3FlashPreview),
     (InstanceConfig.googleAI_v1beta, ModelNames.gemma3_4B),
-    (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemini2FlashLite),
     (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemma3_4B),
     // Note: The following configs are commented out for easy one-off manual testing.
+    // (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemini2FlashLite),
     // (InstanceConfig.googleAI_v1beta_staging, ModelNames.gemini2FlashLite),
     // (InstanceConfig.googleAI_v1beta_staging, ModelNames.gemma3_4B),
     // (InstanceConfig.vertexAI_v1beta_staging, ModelNames.gemini2FlashLite),
@@ -82,10 +84,17 @@ struct GenerateContentIntegrationTests {
     let promptTokensDetails = try #require(usageMetadata.promptTokensDetails.first)
     #expect(promptTokensDetails.modality == .text)
     #expect(promptTokensDetails.tokenCount == usageMetadata.promptTokenCount)
-    #expect(usageMetadata.thoughtsTokenCount == 0)
+    if modelName.hasPrefix("gemini-3") {
+      #expect(usageMetadata.thoughtsTokenCount == 64)
+    } else {
+      #expect(usageMetadata.thoughtsTokenCount == 0)
+    }
     // The fields `candidatesTokenCount` and `candidatesTokensDetails` are not included when using
     // Gemma models.
-    if modelName.hasPrefix("gemma") {
+    if modelName.hasPrefix("gemini-3") {
+      #expect(usageMetadata.candidatesTokenCount == 2)
+      #expect(usageMetadata.candidatesTokensDetails.isEmpty)
+    } else if modelName.hasPrefix("gemma") {
       #expect(usageMetadata.candidatesTokenCount == 0)
       #expect(usageMetadata.candidatesTokensDetails.isEmpty)
     } else {
@@ -95,9 +104,9 @@ struct GenerateContentIntegrationTests {
       #expect(candidatesTokensDetails.modality == .text)
       #expect(candidatesTokensDetails.tokenCount == usageMetadata.candidatesTokenCount)
     }
-    #expect(usageMetadata.totalTokenCount > 0)
-    #expect(usageMetadata.totalTokenCount ==
-      (usageMetadata.promptTokenCount + usageMetadata.candidatesTokenCount))
+    #expect(usageMetadata.totalTokenCount == (usageMetadata.promptTokenCount +
+        usageMetadata.candidatesTokenCount +
+        usageMetadata.thoughtsTokenCount))
   }
 
   @Test(
@@ -161,16 +170,21 @@ struct GenerateContentIntegrationTests {
       (.googleAI_v1beta, ModelNames.gemini2_5_Pro, ThinkingConfig(
         thinkingBudget: 32768, includeThoughts: true
       )),
-      (.googleAI_v1beta_freeTier, ModelNames.gemini2_5_Flash, ThinkingConfig(thinkingBudget: 0)),
-      (
-        .googleAI_v1beta_freeTier,
-        ModelNames.gemini2_5_Flash,
-        ThinkingConfig(thinkingBudget: 24576)
-      ),
-      (.googleAI_v1beta_freeTier, ModelNames.gemini2_5_Flash, ThinkingConfig(
-        thinkingBudget: 24576, includeThoughts: true
+      (.googleAI_v1beta, ModelNames.gemini3FlashPreview, ThinkingConfig(thinkingBudget: 128)),
+      (.googleAI_v1beta, ModelNames.gemini3FlashPreview, ThinkingConfig(thinkingBudget: 32768)),
+      (.googleAI_v1beta, ModelNames.gemini3FlashPreview, ThinkingConfig(
+        thinkingBudget: 32768, includeThoughts: true
       )),
       // Note: The following configs are commented out for easy one-off manual testing.
+//      (.googleAI_v1beta_freeTier, ModelNames.gemini2_5_Flash, ThinkingConfig(thinkingBudget: 0)),
+//      (
+//        .googleAI_v1beta_freeTier,
+//        ModelNames.gemini2_5_Flash,
+//        ThinkingConfig(thinkingBudget: 24576)
+//      ),
+//      (.googleAI_v1beta_freeTier, ModelNames.gemini2_5_Flash, ThinkingConfig(
+//        thinkingBudget: 24576, includeThoughts: true
+//      )),
       // (.googleAI_v1beta_freeTier_bypassProxy, ModelNames.gemini2_5_Flash, ThinkingConfig(
       //   thinkingBudget: 0
       // )),
@@ -255,6 +269,10 @@ struct GenerateContentIntegrationTests {
       (.googleAI_v1beta, ModelNames.gemini2_5_Pro, ThinkingConfig(
         thinkingBudget: -1, includeThoughts: true
       )),
+      (.googleAI_v1beta, ModelNames.gemini3FlashPreview, ThinkingConfig(thinkingBudget: -1)),
+      (.googleAI_v1beta, ModelNames.gemini3FlashPreview, ThinkingConfig(
+        thinkingBudget: -1, includeThoughts: true
+      )),
     ] as [(InstanceConfig, String, ThinkingConfig)]
   )
   func generateContentThinkingFunctionCalling(_ config: InstanceConfig, modelName: String,
@@ -470,19 +488,19 @@ struct GenerateContentIntegrationTests {
 
   @Test(arguments: [
     (InstanceConfig.vertexAI_v1beta, ModelNames.gemini2FlashLite),
-    (InstanceConfig.vertexAI_v1beta_global, ModelNames.gemini2FlashLite),
-    (InstanceConfig.vertexAI_v1beta_global_appCheckLimitedUse, ModelNames.gemini2FlashLite),
+    (InstanceConfig.vertexAI_v1beta_global, ModelNames.gemini3FlashPreview),
+    (InstanceConfig.vertexAI_v1beta_global_appCheckLimitedUse, ModelNames.gemini3FlashPreview),
     (InstanceConfig.googleAI_v1beta, ModelNames.gemini2FlashLite),
     (InstanceConfig.googleAI_v1beta_appCheckLimitedUse, ModelNames.gemini2FlashLite),
     (InstanceConfig.googleAI_v1beta, ModelNames.gemma3_4B),
-    (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemini2FlashLite),
-    (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemma3_4B),
     // Note: The following configs are commented out for easy one-off manual testing.
     // (InstanceConfig.vertexAI_v1beta_staging, ModelNames.gemini2FlashLite),
     // (InstanceConfig.googleAI_v1beta_staging, ModelNames.gemini2FlashLite),
     // (InstanceConfig.googleAI_v1beta_staging, ModelNames.gemma3_4B),
     // (InstanceConfig.googleAI_v1beta_freeTier_bypassProxy, ModelNames.gemini2FlashLite),
     // (InstanceConfig.googleAI_v1beta_freeTier_bypassProxy, ModelNames.gemma3_4B),
+//    (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemini2FlashLite),
+//    (InstanceConfig.googleAI_v1beta_freeTier, ModelNames.gemma3_4B),
   ])
   func generateContentStream(_ config: InstanceConfig, modelName: String) async throws {
     let expectedResponse = [
diff --git a/FirebaseAI/Tests/TestApp/Tests/Integration/LiveSessionTests.swift b/FirebaseAI/Tests/TestApp/Tests/Integration/LiveSessionTests.swift
index fecf8e80e7b..7c661f205d0 100644
--- a/FirebaseAI/Tests/TestApp/Tests/Integration/LiveSessionTests.swift
+++ b/FirebaseAI/Tests/TestApp/Tests/Integration/LiveSessionTests.swift
@@ -91,7 +91,7 @@ struct LiveSessionTests {
     )
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func sendTextRealtime_receiveText(_ config: InstanceConfig, modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
       modelName: modelName,
@@ -113,7 +113,7 @@ struct LiveSessionTests {
     #expect(modelResponse == "yes")
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func sendTextRealtime_receiveAudioOutputTranscripts(_ config: InstanceConfig,
                                                       modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
@@ -136,7 +136,7 @@ struct LiveSessionTests {
     #expect(modelResponse == "yes")
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func sendAudioRealtime_receiveAudioOutputTranscripts(_ config: InstanceConfig,
                                                        modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
@@ -165,7 +165,7 @@ struct LiveSessionTests {
     #expect(modelResponse == "goodbye")
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func sendAudioRealtime_receiveText(_ config: InstanceConfig, modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
       modelName: modelName,
@@ -192,7 +192,10 @@ struct LiveSessionTests {
     #expect(modelResponse == "goodbye")
   }
 
-  @Test(arguments: arguments.filter { $0.1 != ModelNames.gemini2FlashLive })
+  @Test(
+    .disabled("Temporarily disabled"),
+    arguments: arguments.filter { $0.1 != ModelNames.gemini2FlashLive }
+  )
   // gemini-2.0-flash-live-001 is buggy and likes to respond to the audio or system instruction
   // (eg; it will say 'okay' or 'hello', instead of following the instructions)
   func sendVideoRealtime_receiveText(_ config: InstanceConfig, modelName: String) async throws {
@@ -235,7 +238,7 @@ struct LiveSessionTests {
     #expect(["kitten", "cat", "kitty"].contains(modelResponse))
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func realtime_functionCalling(_ config: InstanceConfig, modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
       modelName: modelName,
@@ -283,7 +286,7 @@ struct LiveSessionTests {
     #expect(modelResponse == "smith")
   }
 
-  @Test(arguments: arguments.filter {
+  @Test(.disabled("Temporarily disabled"), arguments: arguments.filter {
     // TODO: (b/450982184) Remove when Vertex AI adds support for Function IDs and Cancellation
     switch $0.0.apiConfig.service {
     case .googleAI:
@@ -325,6 +328,7 @@ struct LiveSessionTests {
   }
 
   @Test(
+    .disabled("Temporarily disabled"),
     arguments: arguments.filter { !$0.0.useLimitedUseAppCheckTokens }
   )
   // Getting a limited use token adds too much of an overhead; we can't interrupt the model in time
@@ -360,7 +364,7 @@ struct LiveSessionTests {
     }
   }
 
-  @Test(arguments: arguments)
+  @Test(.disabled("Temporarily disabled"), arguments: arguments)
   func incremental_works(_ config: InstanceConfig, modelName: String) async throws {
     let model = FirebaseAI.componentInstance(config).liveModel(
       modelName: modelName,
diff --git a/FirebaseAI/Tests/TestApp/Tests/Utilities/InstanceConfig.swift b/FirebaseAI/Tests/TestApp/Tests/Utilities/InstanceConfig.swift
index 6522abbad1e..476be89b878 100644
--- a/FirebaseAI/Tests/TestApp/Tests/Utilities/InstanceConfig.swift
+++ b/FirebaseAI/Tests/TestApp/Tests/Utilities/InstanceConfig.swift
@@ -83,8 +83,8 @@ struct InstanceConfig: Equatable, Encodable {
     vertexAI_v1beta_global_appCheckLimitedUse,
     googleAI_v1beta,
     googleAI_v1beta_appCheckLimitedUse,
-    googleAI_v1beta_freeTier,
     // Note: The following configs are commented out for easy one-off manual testing.
+    // googleAI_v1beta_freeTier,
     // vertexAI_v1beta_staging,
     // vertexAI_v1beta_staging_global_bypassProxy,
     // googleAI_v1beta_staging,