diff --git a/backend/internal/http/router/handlers-web.go b/backend/internal/http/router/handlers-web.go
index 895c94279..6cbf1a5f1 100644
--- a/backend/internal/http/router/handlers-web.go
+++ b/backend/internal/http/router/handlers-web.go
@@ -176,13 +176,14 @@ func (e *Router) startSessionHandlerWeb(w http.ResponseWriter, r *http.Request)
 	e.addBeaconSize(tokenData.ID, p.BeaconSize)
 
 	ResponseWithJSON(w, &StartSessionResponse{
-		Token:           e.services.Tokenizer.Compose(*tokenData),
-		UserUUID:        userUUID,
-		SessionID:       strconv.FormatUint(tokenData.ID, 10),
-		ProjectID:       strconv.FormatUint(uint64(p.ProjectID), 10),
-		BeaconSizeLimit: e.getBeaconSize(tokenData.ID),
-		StartTimestamp:  int64(flakeid.ExtractTimestamp(tokenData.ID)),
-		Delay:           tokenData.Delay,
+		Token:                e.services.Tokenizer.Compose(*tokenData),
+		UserUUID:             userUUID,
+		SessionID:            strconv.FormatUint(tokenData.ID, 10),
+		ProjectID:            strconv.FormatUint(uint64(p.ProjectID), 10),
+		BeaconSizeLimit:      e.getBeaconSize(tokenData.ID),
+		CompressionThreshold: e.getCompressionThreshold(),
+		StartTimestamp:       int64(flakeid.ExtractTimestamp(tokenData.ID)),
+		Delay:                tokenData.Delay,
 	}, startTime, r.URL.Path, bodySize)
 }
 
diff --git a/backend/internal/http/router/model.go b/backend/internal/http/router/model.go
index b2ddfd9b4..fa6249ae7 100644
--- a/backend/internal/http/router/model.go
+++ b/backend/internal/http/router/model.go
@@ -15,14 +15,15 @@ type StartSessionRequest struct {
 }
 
 type StartSessionResponse struct {
-	Timestamp       int64  `json:"timestamp"`
-	StartTimestamp  int64  `json:"startTimestamp"`
-	Delay           int64  `json:"delay"`
-	Token           string `json:"token"`
-	UserUUID        string `json:"userUUID"`
-	SessionID       string `json:"sessionID"`
-	ProjectID       string `json:"projectID"`
-	BeaconSizeLimit int64  `json:"beaconSizeLimit"`
+	Timestamp            int64  `json:"timestamp"`
+	StartTimestamp       int64  `json:"startTimestamp"`
+	Delay                int64  `json:"delay"`
+	Token                string `json:"token"`
+	UserUUID             string `json:"userUUID"`
+	SessionID            string `json:"sessionID"`
+	ProjectID            string `json:"projectID"`
+	BeaconSizeLimit      int64  `json:"beaconSizeLimit"`
+	CompressionThreshold int64  `json:"compressionThreshold"`
 }
 
 type NotStartedRequest struct {
diff --git a/backend/internal/http/router/router.go b/backend/internal/http/router/router.go
index 6cd7efe79..0b74c8c0b 100644
--- a/backend/internal/http/router/router.go
+++ b/backend/internal/http/router/router.go
@@ -66,6 +66,10 @@ func (e *Router) getBeaconSize(sessionID uint64) int64 {
 	return e.cfg.BeaconSizeLimit
 }
 
+func (e *Router) getCompressionThreshold() int64 {
+	return 20000
+}
+
 func (e *Router) clearBeaconSizes() {
 	for {
 		time.Sleep(time.Minute * 2)