Transition to flash GA model when experiment flag is present. (#27570)

packages/core/src/routing/strategies/defaultStrategy.ts

@@ -29,6 +29,7 @@ export class DefaultStrategy implements TerminalStrategy {
       false,
       config.getHasAccessToPreviewModel?.() ?? true,
       config,
+      config.hasGemini35FlashGAAccess?.() ?? false,
     );
     return {
       model: defaultModel,

packages/core/src/routing/strategies/fallbackStrategy.ts

@@ -31,6 +31,7 @@ export class FallbackStrategy implements RoutingStrategy {
       false,
       config.getHasAccessToPreviewModel?.() ?? true,
       config,
+      config.hasGemini35FlashGAAccess?.() ?? false,
     );
     const service = config.getModelAvailabilityService();
     const snapshot = service.snapshot(resolvedModel);

packages/core/src/routing/strategies/overrideStrategy.ts

@@ -41,6 +41,7 @@ export class OverrideStrategy implements RoutingStrategy {
         false,
         config.getHasAccessToPreviewModel?.() ?? true,
         config,
+        config.hasGemini35FlashGAAccess?.() ?? false,
       ),
       metadata: {
         source: this.name,