diff --git a/backend_go/surface_query/handlers/handle_sample_in_points.go b/backend_go/surface_query/handlers/handle_sample_in_points.go
index 054928ade..f8e716317 100644
--- a/backend_go/surface_query/handlers/handle_sample_in_points.go
+++ b/backend_go/surface_query/handlers/handle_sample_in_points.go
@@ -30,8 +30,9 @@ type RealizationSampleResult struct {
 }
 
 type PointSamplingResponse struct {
-	SampleResultArr []RealizationSampleResult `json:"sampleResultArr" binding:"required"`
-	UndefLimit      float32                   `json:"undefLimit" binding:"required"`
+	SampleResultArr    []RealizationSampleResult `json:"sampleResultArr" binding:"required"`
+	UndefLimit         float32                   `json:"undefLimit" binding:"required"`
+	CalculationTime_ms int                       `json:"calculationTime_ms" binding:"required"`
 }
 
 func HandleSampleInPoints(c *gin.Context) {
@@ -66,14 +67,16 @@ func HandleSampleInPoints(c *gin.Context) {
 	// TO-DISCUSS:
 	// Must check this out in relation to the xtgeo code
 	// Undef value and limit seem to be misaligned!!!
+	duration_ms := (time.Now().Sub(startTime)) / time.Millisecond
 	retResultArr := make([]RealizationSampleResult, len(perRealSamplesArr))
 	for i := range retResultArr {
 		retResultArr[i] = RealizationSampleResult(perRealSamplesArr[i])
 	}
 
 	responseBody := PointSamplingResponse{
-		SampleResultArr: retResultArr,
-		UndefLimit:      0.99e30,
+		SampleResultArr:    retResultArr,
+		UndefLimit:         0.99e30,
+		CalculationTime_ms: int(duration_ms),
 	}
 	c.JSON(http.StatusOK, responseBody)
 
diff --git a/backend_py/primary/primary/services/surface_query_service/surface_query_service.py b/backend_py/primary/primary/services/surface_query_service/surface_query_service.py
index 38a9c4f1b..179072b94 100644
--- a/backend_py/primary/primary/services/surface_query_service/surface_query_service.py
+++ b/backend_py/primary/primary/services/surface_query_service/surface_query_service.py
@@ -38,6 +38,7 @@ class _PointSamplingRequestBody(BaseModel):
 class _PointSamplingResponseBody(BaseModel):
     sampleResultArr: List[RealizationSampleResult]
     undefLimit: float
+    calculationTime_ms: int
 
 
 # URL of the Go server endpoint
@@ -96,6 +97,9 @@ async def batch_sample_surface_in_points_async(
     json_data: bytes = response.content
     response_body = _PointSamplingResponseBody.model_validate_json(json_data)
 
+    perf_metrics.set_metric("inner-go-call", response_body.calculationTime_ms)
+
+
     # Replace values above the undefLimit with np.nan
     for res in response_body.sampleResultArr:
         values_np = np.asarray(res.sampledValues)