diff --git a/src/modules/aix/server/dispatch/chatGenerate/parsers/gemini.interactions.parser.ts b/src/modules/aix/server/dispatch/chatGenerate/parsers/gemini.interactions.parser.ts
index 8357e30da..e67d0760d 100644
--- a/src/modules/aix/server/dispatch/chatGenerate/parsers/gemini.interactions.parser.ts
+++ b/src/modules/aix/server/dispatch/chatGenerate/parsers/gemini.interactions.parser.ts
@@ -151,6 +151,9 @@ export function createGeminiInteractionsParserSSE(requestedModelName: string | n
         if (!deltaParse.success) {
           // Empty deltas ({}) appear alongside placeholder blocks (e.g. internal tool slots) - silent skip
           if (event.delta && Object.keys(event.delta).length === 0) break;
+          // Known-but-not-surfaced delta types (mirrors NS parser's INTERNAL_OUTPUT_TYPES policy + spec's document/video variants we don't model) - silent skip
+          const deltaType = (event.delta as { type?: string })?.type;
+          if (deltaType && (GeminiInteractionsWire_API_Interactions.INTERNAL_OUTPUT_TYPES.has(deltaType) || deltaType === 'document' || deltaType === 'video')) break;
           console.warn('[GeminiInteractions] unknown content.delta shape at index', event.index, event.delta);
           break;
         }
diff --git a/src/modules/aix/server/dispatch/wiretypes/gemini.interactions.wiretypes.ts b/src/modules/aix/server/dispatch/wiretypes/gemini.interactions.wiretypes.ts
index b039f078e..d78942088 100644
--- a/src/modules/aix/server/dispatch/wiretypes/gemini.interactions.wiretypes.ts
+++ b/src/modules/aix/server/dispatch/wiretypes/gemini.interactions.wiretypes.ts
@@ -167,7 +167,7 @@ export namespace GeminiInteractionsWire_API_Interactions {
     // the parser prefers inline and falls back to a URI note when only `uri` is present.
     data: z.string().optional(), // base64-encoded bytes
     uri: z.string().optional(),
-    mime_type: z.string(),
+    mime_type: z.string().optional(), // spec: optional - parser still requires it before emitting inline
     resolution: z.string().optional(), // 'low' | 'medium' | 'high' | 'ultra_high'
   });
 
@@ -176,7 +176,7 @@ export namespace GeminiInteractionsWire_API_Interactions {
     // Per docs: data or uri, mime_type covers both PCM (audio/l16) and packaged formats (audio/wav, audio/mp3, ...).
     data: z.string().optional(),
     uri: z.string().optional(),
-    mime_type: z.string(),
+    mime_type: z.string().optional(), // spec: optional - parser still requires it before emitting inline
     rate: z.number().optional(), // sample rate, when known
     channels: z.number().optional(),
   });