diff --git a/x-pack/plugins/actions/server/lib/get_token_count_from_invoke_stream.ts b/x-pack/plugins/actions/server/lib/get_token_count_from_invoke_stream.ts
index 604e623699136..909b7e09abda0 100644
--- a/x-pack/plugins/actions/server/lib/get_token_count_from_invoke_stream.ts
+++ b/x-pack/plugins/actions/server/lib/get_token_count_from_invoke_stream.ts
@@ -288,7 +288,9 @@ const parseOpenAIResponse = (responseBody: string) =>
           delta: { content?: string; function_call?: { name?: string; arguments: string } };
         }>;
       } => {
-        return 'object' in line && line.object === 'chat.completion.chunk';
+        return (
+          'object' in line && line.object === 'chat.completion.chunk' && line.choices.length > 0
+        );
       }
     )
     .reduce((prev, line) => {
diff --git a/x-pack/plugins/elastic_assistant/server/lib/parse_stream.ts b/x-pack/plugins/elastic_assistant/server/lib/parse_stream.ts
index 55be80cbb522d..3aef870be8116 100644
--- a/x-pack/plugins/elastic_assistant/server/lib/parse_stream.ts
+++ b/x-pack/plugins/elastic_assistant/server/lib/parse_stream.ts
@@ -85,7 +85,9 @@ const parseOpenAIResponse = (responseBody: string) =>
           delta: { content?: string; function_call?: { name?: string; arguments: string } };
         }>;
       } => {
-        return 'object' in line && line.object === 'chat.completion.chunk';
+        return (
+          'object' in line && line.object === 'chat.completion.chunk' && line.choices.length > 0
+        );
       }
     )
     .reduce((prev, line) => {
diff --git a/x-pack/plugins/observability_solution/observability_ai_assistant/common/utils/process_openai_stream.ts b/x-pack/plugins/observability_solution/observability_ai_assistant/common/utils/process_openai_stream.ts
index 11fe48721812c..184b4817abf64 100644
--- a/x-pack/plugins/observability_solution/observability_ai_assistant/common/utils/process_openai_stream.ts
+++ b/x-pack/plugins/observability_solution/observability_ai_assistant/common/utils/process_openai_stream.ts
@@ -42,7 +42,7 @@ export function processOpenAiStream(logger: Logger) {
       }),
       filter(
         (line): line is CreateChatCompletionResponseChunk =>
-          'object' in line && line.object === 'chat.completion.chunk'
+          'object' in line && line.object === 'chat.completion.chunk' && line.choices.length > 0
       ),
       map((chunk): ChatCompletionChunkEvent => {
         const delta = chunk.choices[0].delta;