diff --git a/skyvern/core/script_generations/generate_script.py b/skyvern/core/script_generations/generate_script.py
index 8460e5d5..fdea2c24 100644
--- a/skyvern/core/script_generations/generate_script.py
+++ b/skyvern/core/script_generations/generate_script.py
@@ -673,16 +673,30 @@ def _build_action_statement(
                 last_line=cst.SimpleWhitespace(INDENT),
             ),
         ),
-        cst.Arg(
-            keyword=cst.Name("label"),
-            value=_value(block_title),
-            whitespace_after_arg=cst.ParenthesizedWhitespace(
-                indent=True,
-            ),
-            comma=cst.Comma(),
-        ),
     ]
-
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+    if block.get("label"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("label"),
+                value=_value(block.get("label")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                ),
+                comma=cst.Comma(),
+            )
+        )
+    _mark_last_arg_as_comma(args)
     call = cst.Call(
         func=cst.Attribute(value=cst.Name("skyvern"), attr=cst.Name("action")),
         args=args,
@@ -733,15 +747,30 @@ def _build_extract_statement(
                 last_line=cst.SimpleWhitespace(INDENT),
             ),
         ),
-        cst.Arg(
-            keyword=cst.Name("label"),
-            value=_value(block_title),
-            whitespace_after_arg=cst.ParenthesizedWhitespace(
-                indent=True,
-            ),
-            comma=cst.Comma(),
-        ),
     ]
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+    if block.get("label"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("label"),
+                value=_value(block_title),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                ),
+                comma=cst.Comma(),
+            )
+        )
+    _mark_last_arg_as_comma(args)
 
     call = cst.Call(
         func=cst.Attribute(value=cst.Name("skyvern"), attr=cst.Name("extract")),
@@ -882,6 +911,18 @@ def _build_validate_statement(
             )
         )
 
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+
     # Add label if it exists
     if block.get("label") is not None:
         args.append(
@@ -1114,6 +1155,18 @@ def _build_pdf_parser_statement(block: dict[str, Any]) -> cst.SimpleStatementLin
             )
         )
 
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+
     if block.get("label") is not None:
         args.append(
             cst.Arg(
@@ -1172,6 +1225,18 @@ def _build_file_url_parser_statement(block: dict[str, Any]) -> cst.SimpleStateme
             )
         )
 
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+
     if block.get("label") is not None:
         args.append(
             cst.Arg(
@@ -1319,6 +1384,18 @@ def _build_prompt_statement(block: dict[str, Any]) -> cst.SimpleStatementLine:
             )
         )
 
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
+
     if block.get("label") is not None:
         args.append(
             cst.Arg(
@@ -1331,7 +1408,7 @@ def _build_prompt_statement(block: dict[str, Any]) -> cst.SimpleStatementLine:
             )
         )
 
-    if block.get("parameters") is not None:
+    if block.get("parameters"):
         parameters = block.get("parameters", [])
         parameter_list = [parameter["key"] for parameter in parameters]
         args.append(
@@ -1340,10 +1417,12 @@ def _build_prompt_statement(block: dict[str, Any]) -> cst.SimpleStatementLine:
                 value=_value(parameter_list),
                 whitespace_after_arg=cst.ParenthesizedWhitespace(
                     indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
                 ),
             )
         )
 
+    _mark_last_arg_as_comma(args)
     call = cst.Call(
         func=cst.Attribute(value=cst.Name("skyvern"), attr=cst.Name("prompt")),
         args=args,
@@ -1568,6 +1647,17 @@ def __build_base_task_statement(
                 ),
             )
         )
+    if block.get("model"):
+        args.append(
+            cst.Arg(
+                keyword=cst.Name("model"),
+                value=_value(block.get("model")),
+                whitespace_after_arg=cst.ParenthesizedWhitespace(
+                    indent=True,
+                    last_line=cst.SimpleWhitespace(INDENT),
+                ),
+            )
+        )
     if block.get("block_type") == "task_v2":
         args.append(
             cst.Arg(
diff --git a/skyvern/forge/sdk/workflow/service.py b/skyvern/forge/sdk/workflow/service.py
index 4c8626f3..7a82e1e9 100644
--- a/skyvern/forge/sdk/workflow/service.py
+++ b/skyvern/forge/sdk/workflow/service.py
@@ -130,7 +130,6 @@ CacheInvalidationReason = Literal["updated_block", "new_block", "removed_block"]
 BLOCK_TYPES_THAT_SHOULD_BE_CACHED = {
     BlockType.TASK,
     BlockType.TaskV2,
-    BlockType.VALIDATION,
     BlockType.ACTION,
     BlockType.NAVIGATION,
     BlockType.EXTRACTION,
diff --git a/skyvern/services/script_service.py b/skyvern/services/script_service.py
index 2541b17c..c3fe816a 100644
--- a/skyvern/services/script_service.py
+++ b/skyvern/services/script_service.py
@@ -399,6 +399,7 @@ async def _create_workflow_block_run_and_task(
     schema: dict[str, Any] | list | str | None = None,
     url: str | None = None,
     label: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> tuple[str | None, str | None, str | None]:
     """
     Create a workflow block run and optionally a task if workflow_run_id is available in context.
@@ -449,6 +450,7 @@ async def _create_workflow_block_run_and_task(
                 status="running",
                 organization_id=organization_id,
                 workflow_run_id=workflow_run_id,
+                model=model,
             )
 
             task_id = task.task_id
@@ -1210,6 +1212,7 @@ async def run_task(
             prompt=prompt,
             url=url,
             label=cache_key,
+            model=model,
         )
         prompt = _render_template_with_label(prompt, cache_key)
         # set the prompt in the RunContext
@@ -1256,6 +1259,7 @@ async def run_task(
             totp_verification_url=totp_url,
             include_action_history_in_verification=True,
             engine=RunEngine.skyvern_v1,
+            model=model,
         )
         await task_block.execute_safe(
             workflow_run_id=block_validation_output.workflow_run_id,
@@ -1275,6 +1279,7 @@ async def download(
     totp_url: str | None = None,
     label: str | None = None,
     cache_key: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> None:
     cache_key = cache_key or label
     cached_fn = script_run_context_manager.get_cached_fn(cache_key)
@@ -1286,6 +1291,7 @@ async def download(
             prompt=prompt,
             url=url,
             label=cache_key,
+            model=model,
         )
         prompt = _render_template_with_label(prompt, cache_key)
         # set the prompt in the RunContext
@@ -1332,6 +1338,7 @@ async def download(
             totp_verification_url=totp_url,
             include_action_history_in_verification=True,
             engine=RunEngine.skyvern_v1,
+            model=model,
         )
         await file_download_block.execute_safe(
             workflow_run_id=block_validation_output.workflow_run_id,
@@ -1350,6 +1357,7 @@ async def action(
     totp_url: str | None = None,
     label: str | None = None,
     cache_key: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> None:
     context: skyvern_context.SkyvernContext | None
     cache_key = cache_key or label
@@ -1361,6 +1369,7 @@ async def action(
             prompt=prompt,
             url=url,
             label=cache_key,
+            model=model,
         )
         prompt = _render_template_with_label(prompt, cache_key)
         # set the prompt in the RunContext
@@ -1406,6 +1415,7 @@ async def action(
             max_steps_per_run=max_steps,
             totp_identifier=totp_identifier,
             totp_verification_url=totp_url,
+            model=model,
         )
         await action_block.execute_safe(
             workflow_run_id=block_validation_output.workflow_run_id,
@@ -1423,6 +1433,7 @@ async def login(
     totp_url: str | None = None,
     label: str | None = None,
     cache_key: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> None:
     context: skyvern_context.SkyvernContext | None
     cache_key = cache_key or label
@@ -1435,6 +1446,7 @@ async def login(
             prompt=prompt,
             url=url,
             label=cache_key,
+            model=model,
         )
         prompt = _render_template_with_label(prompt, cache_key)
         # set the prompt in the RunContext
@@ -1478,6 +1490,7 @@ async def login(
             max_steps_per_run=max_steps,
             totp_identifier=totp_identifier,
             totp_verification_url=totp_url,
+            model=model,
         )
         await login_block.execute_safe(
             workflow_run_id=block_validation_output.workflow_run_id,
@@ -1494,6 +1507,7 @@ async def extract(
     max_steps: int | None = None,
     label: str | None = None,
     cache_key: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> dict[str, Any] | list | str | None:
     output: dict[str, Any] | list | str | None = None
 
@@ -1508,6 +1522,7 @@ async def extract(
             schema=schema,
             url=url,
             label=cache_key,
+            model=model,
         )
         prompt = _render_template_with_label(prompt, cache_key)
         # set the prompt in the RunContext
@@ -1553,6 +1568,7 @@ async def extract(
             max_steps_per_run=max_steps,
             data_schema=schema,
             output_parameter=block_validation_output.output_parameter,
+            model=model,
         )
         block_result = await extraction_block.execute_safe(
             workflow_run_id=block_validation_output.workflow_run_id,
@@ -1568,6 +1584,7 @@ async def validate(
     terminate_criterion: str | None = None,
     error_code_mapping: dict[str, str] | None = None,
     label: str | None = None,
+    model: dict[str, Any] | None = None,
 ) -> None:
     """Validate function that behaves like a ValidationBlock"""
     if not complete_criterion and not terminate_criterion:
@@ -1582,6 +1599,7 @@ async def validate(
         terminate_criterion=terminate_criterion,
         error_code_mapping=error_code_mapping,
         max_steps_per_run=2,
+        model=model,
     )
     result = await validation_block.execute_safe(
         workflow_run_id=block_validation_output.workflow_run_id,
@@ -1927,6 +1945,7 @@ async def parse_file(
     schema: dict[str, Any] | None = None,
     label: str | None = None,
     parameters: list[str] | None = None,
+    model: dict[str, Any] | None = None,
 ) -> None:
     block_validation_output = await _validate_and_get_output_parameter(label, parameters)
     file_url = _render_template_with_label(file_url, label)
@@ -1937,6 +1956,7 @@ async def parse_file(
         label=block_validation_output.label,
         output_parameter=block_validation_output.output_parameter,
         parameters=block_validation_output.input_parameters,
+        model=model,
     )
     await file_parser_block.execute_safe(
         workflow_run_id=block_validation_output.workflow_run_id,
@@ -2008,6 +2028,7 @@ async def prompt(
     schema: dict[str, Any] | None = None,
     label: str | None = None,
     parameters: list[str] | None = None,
+    model: dict[str, Any] | None = None,
 ) -> dict[str, Any] | list | str | None:
     block_validation_output = await _validate_and_get_output_parameter(label, parameters)
     prompt = _render_template_with_label(prompt, label)
@@ -2017,6 +2038,7 @@ async def prompt(
         label=block_validation_output.label,
         output_parameter=block_validation_output.output_parameter,
         parameters=block_validation_output.input_parameters,
+        model=model,
     )
     result = await prompt_block.execute_safe(
         workflow_run_id=block_validation_output.workflow_run_id,