diff --git a/packages/gooddata-sdk/src/gooddata_sdk/compute/model/filter.py b/packages/gooddata-sdk/src/gooddata_sdk/compute/model/filter.py
index 74ea5aa44..f712caf55 100644
--- a/packages/gooddata-sdk/src/gooddata_sdk/compute/model/filter.py
+++ b/packages/gooddata-sdk/src/gooddata_sdk/compute/model/filter.py
@@ -3,7 +3,7 @@
 
 from datetime import datetime
 from importlib.util import find_spec
-from typing import Any, Optional, Union, cast
+from typing import Any, Literal, Optional, TypeAlias, Union, cast
 
 import attrs
 from gooddata_api_client.model.inline_filter_definition_inline import InlineFilterDefinitionInline
@@ -64,6 +64,17 @@
     "NOT_EQUAL_TO": "!=",
 }
 
+ComparisonOperator: TypeAlias = Literal[
+    "GREATER_THAN",
+    "GREATER_THAN_OR_EQUAL_TO",
+    "LESS_THAN",
+    "LESS_THAN_OR_EQUAL_TO",
+    "EQUAL_TO",
+    "NOT_EQUAL_TO",
+]
+
+RangeOperator: TypeAlias = Literal["BETWEEN", "NOT_BETWEEN"]
+
 
 def _extract_id_or_local_id(val: Union[ObjId, Attribute, Metric, str]) -> Union[ObjId, str]:
     if isinstance(val, (str, ObjId)):
@@ -488,7 +499,7 @@ def description(self, labels: dict[str, str], format_locale: Optional[str] = Non
 
 @attrs.define(frozen=True, slots=True)
 class MetricValueComparisonCondition:
-    operator: str
+    operator: ComparisonOperator
     value: Union[int, float]
 
     def as_api_model(self) -> afm_models.MeasureValueCondition:
@@ -505,7 +516,7 @@ def description(self) -> str:
 
 @attrs.define(frozen=True, slots=True)
 class MetricValueRangeCondition:
-    operator: str
+    operator: RangeOperator
     from_value: Union[int, float]
     to_value: Union[int, float]
 
@@ -519,7 +530,7 @@ def as_api_model(self) -> afm_models.MeasureValueCondition:
         return afm_models.MeasureValueCondition(range=range_body, _check_type=False)
 
     def description(self) -> str:
-        not_between = "not" if self.operator == "NOT_BETWEEN" else ""
+        not_between = "not " if self.operator == "NOT_BETWEEN" else ""
         return f"{not_between}between {float(self.from_value)} - {float(self.to_value)}"