diff --git a/packages/bigframes/bigframes/core/compile/sqlglot/expressions/ai_ops.py b/packages/bigframes/bigframes/core/compile/sqlglot/expressions/ai_ops.py
index 12a6b9859a2a..d092f662f0f8 100644
--- a/packages/bigframes/bigframes/core/compile/sqlglot/expressions/ai_ops.py
+++ b/packages/bigframes/bigframes/core/compile/sqlglot/expressions/ai_ops.py
@@ -111,7 +111,8 @@ def _construct_prompt(
         else:
             prompt.append(sge.Literal.string(elem))
 
-    return sge.Kwarg(this=param_name, expression=sge.Tuple(expressions=prompt))
+    # Need Struct rather than tuple syntax, as tuple syntax is ambiguous for single arg
+    return sge.Kwarg(this=param_name, expression=sge.Struct(expressions=prompt))
 
 
 def _construct_named_args(op: ops.ScalarOp) -> list[sge.Kwarg]:
diff --git a/packages/bigframes/tests/system/conftest.py b/packages/bigframes/tests/system/conftest.py
index 1adcb051c470..f6fbdd0c510d 100644
--- a/packages/bigframes/tests/system/conftest.py
+++ b/packages/bigframes/tests/system/conftest.py
@@ -1325,6 +1325,14 @@ def usa_names_grouped_table(
         return session.bqclient.get_table(table_id)
 
 
+@pytest.fixture(scope="session", autouse=True)
+def use_sqlglot_compiler():
+    original_setting = bigframes.options.experiments.sql_compiler
+    bigframes.options.experiments.sql_compiler = "experimental"
+    yield
+    bigframes.options.experiments.sql_compiler = original_setting
+
+
 @pytest.fixture()
 def restore_sampling_settings():
     enable_downsampling = bigframes.options.sampling.enable_downsampling
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/None/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/None/out.sql
index 6771527318fa..fc29d96cc1aa 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/None/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/None/out.sql
@@ -1,3 +1,3 @@
 SELECT
-  AI.CLASSIFY(input => (`string_col`), categories => ['greeting', 'rejection']) AS `result`
+  AI.CLASSIFY(input => STRUCT(`string_col`), categories => ['greeting', 'rejection']) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/bigframes-dev.us.bigframes-default-connection/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/bigframes-dev.us.bigframes-default-connection/out.sql
index 63c31d94566d..969b946725bc 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/bigframes-dev.us.bigframes-default-connection/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify/bigframes-dev.us.bigframes-default-connection/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.CLASSIFY(
-    input => (`string_col`),
+    input => STRUCT(`string_col`),
     categories => ['greeting', 'rejection'],
     connection_id => 'bigframes-dev.us.bigframes-default-connection'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_multi_with_list_examples/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_multi_with_list_examples/out.sql
index a4a7f783da97..74078e986064 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_multi_with_list_examples/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_multi_with_list_examples/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.CLASSIFY(
-    input => (`string_col`),
+    input => STRUCT(`string_col`),
     categories => ['greeting', 'rejection'],
     examples => [('hi', ['greeting', 'positive']), ('bye', ['rejection', 'negative'])],
     output_mode => 'multi'
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_output_mode/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_output_mode/out.sql
index fb3c6af8b0b0..08d7476d77f4 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_output_mode/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_output_mode/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.CLASSIFY(
-    input => (`string_col`),
+    input => STRUCT(`string_col`),
     categories => ['greeting', 'rejection'],
     output_mode => 'multi'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_params/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_params/out.sql
index 982b747f8927..30542740a2dc 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_params/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_classify_with_params/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.CLASSIFY(
-    input => (`string_col`),
+    input => STRUCT(`string_col`),
     categories => ['greeting', 'rejection'],
     examples => [('hi', 'greeting'), ('bye', 'rejection')],
     endpoint => 'gemini-2.5-flash',
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate/out.sql
index 9593347238f8..622782fa7d65 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash',
     request_type => 'SHARED'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool/out.sql
index aebccad12217..a71bce037a5d 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_BOOL(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_connection_id/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_connection_id/out.sql
index 8f501a2cc292..db1ec378aaf9 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_connection_id/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_connection_id/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_BOOL(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection',
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_model_param/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_model_param/out.sql
index 985f5bb255d7..76af8833e639 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_model_param/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_bool_with_model_param/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_BOOL(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     model_params => JSON '{}'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double/out.sql
index 3aed8986e179..1cef75687988 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_DOUBLE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_connection_id/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_connection_id/out.sql
index 19b8c18eec14..d0088721e386 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_connection_id/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_connection_id/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_DOUBLE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection',
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_model_param/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_model_param/out.sql
index 854acc386739..2b50e05b7fe9 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_model_param/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_double_with_model_param/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_DOUBLE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     model_params => JSON '{}'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int/out.sql
index 1ea5d0355cc9..9ef143c8b9e4 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_INT(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_connection_id/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_connection_id/out.sql
index b99a8e9a207e..3fa3e8cc05e1 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_connection_id/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_connection_id/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_INT(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection',
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_model_param/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_model_param/out.sql
index fb3c9c001013..18adea8a0622 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_model_param/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_int_with_model_param/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE_INT(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     model_params => JSON '{}'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_connection_id/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_connection_id/out.sql
index b122d97b0617..14604cfc8dfd 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_connection_id/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_connection_id/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection',
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_model_param/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_model_param/out.sql
index 9d818b8c0cc9..090a42d889f5 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_model_param/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_model_param/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     model_params => JSON '{}'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_output_schema/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_output_schema/out.sql
index 44abe7085c4e..31c179e7b01a 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_output_schema/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_generate_with_output_schema/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.GENERATE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash',
     output_schema => 'x INT64, y FLOAT64'
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/None/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/None/out.sql
index 7696a12c5893..59cf1c02a355 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/None/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/None/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.IF(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     optimization_mode => 'MINIMIZE_COST',
     max_error_ratio => 0.5
   ) AS `result`
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/bigframes-dev.us.bigframes-default-connection/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/bigframes-dev.us.bigframes-default-connection/out.sql
index dc8707487b54..0f26ab3c6ea6 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/bigframes-dev.us.bigframes-default-connection/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if/bigframes-dev.us.bigframes-default-connection/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.IF(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection',
     optimization_mode => 'MINIMIZE_COST',
     max_error_ratio => 0.5
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if_with_endpoint/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if_with_endpoint/out.sql
index 5074584bd72d..4dd910528a41 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if_with_endpoint/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_if_with_endpoint/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.IF(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/None/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/None/out.sql
index 6a16276734ee..37590eec4f0f 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/None/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/None/out.sql
@@ -1,3 +1,3 @@
 SELECT
-  AI.SCORE(prompt => (`string_col`, ' is the same as ', `string_col`)) AS `result`
+  AI.SCORE(prompt => STRUCT(`string_col`, ' is the same as ', `string_col`)) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/bigframes-dev.us.bigframes-default-connection/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/bigframes-dev.us.bigframes-default-connection/out.sql
index 92de7cdcdc65..696c7e9f3183 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/bigframes-dev.us.bigframes-default-connection/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score/bigframes-dev.us.bigframes-default-connection/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.SCORE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     connection_id => 'bigframes-dev.us.bigframes-default-connection'
   ) AS `result`
 FROM `bigframes-dev`.`sqlglot_test`.`scalar_types` AS `bft_0`
\ No newline at end of file
diff --git a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score_with_endpoint_and_max_error_ratio/out.sql b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score_with_endpoint_and_max_error_ratio/out.sql
index d65590d0b66d..a802e5a396bf 100644
--- a/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score_with_endpoint_and_max_error_ratio/out.sql
+++ b/packages/bigframes/tests/unit/core/compile/sqlglot/expressions/snapshots/test_ai_ops/test_ai_score_with_endpoint_and_max_error_ratio/out.sql
@@ -1,6 +1,6 @@
 SELECT
   AI.SCORE(
-    prompt => (`string_col`, ' is the same as ', `string_col`),
+    prompt => STRUCT(`string_col`, ' is the same as ', `string_col`),
     endpoint => 'gemini-2.5-flash',
     max_error_ratio => 0.5
   ) AS `result`