diff --git a/lib/pangea/choreographer/controllers/span_data_controller.dart b/lib/pangea/choreographer/controllers/span_data_controller.dart
index 910246abf..24470454c 100644
--- a/lib/pangea/choreographer/controllers/span_data_controller.dart
+++ b/lib/pangea/choreographer/controllers/span_data_controller.dart
@@ -54,7 +54,6 @@ class SpanDataController {
       userL2: choreographer.l2LangCode!,
       enableIGC: choreographer.igcEnabled,
       enableIT: choreographer.itEnabled,
-      prevMessages: choreographer.prevMessages(),
       span: span,
     );
     final int cacheKey = req.hashCode;
@@ -72,7 +71,6 @@ class SpanDataController {
           userL2: choreographer.l2LangCode!,
           enableIGC: choreographer.igcEnabled,
           enableIT: choreographer.itEnabled,
-          prevMessages: choreographer.prevMessages(),
           span: span,
         ),
       );
diff --git a/lib/pangea/repo/span_data_repo.dart b/lib/pangea/repo/span_data_repo.dart
index 360ddd421..7073581a1 100644
--- a/lib/pangea/repo/span_data_repo.dart
+++ b/lib/pangea/repo/span_data_repo.dart
@@ -5,7 +5,6 @@ import 'package:fluffychat/pangea/config/environment.dart';
 import 'package:fluffychat/pangea/enum/span_choice_type.dart';
 import 'package:fluffychat/pangea/enum/span_data_type.dart';
 import 'package:fluffychat/pangea/models/span_data.dart';
-import 'package:fluffychat/pangea/repo/igc_repo.dart';
 import 'package:http/http.dart';
 
 import '../constants/model_keys.dart';
@@ -48,7 +47,6 @@ class SpanDetailsRepoReqAndRes {
   String userL2;
   bool enableIT;
   bool enableIGC;
-  List<PreviousMessage> prevMessages;
   SpanData span;
 
   SpanDetailsRepoReqAndRes({
@@ -56,7 +54,6 @@ class SpanDetailsRepoReqAndRes {
     required this.userL2,
     required this.enableIGC,
     required this.enableIT,
-    required this.prevMessages,
     required this.span,
   });
 
@@ -65,7 +62,6 @@ class SpanDetailsRepoReqAndRes {
         ModelKey.userL2: userL2,
         "enable_it": enableIT,
         "enable_igc": enableIGC,
-        "prev_messages": prevMessages,
         'span': span.toJson(),
       };
 
@@ -75,7 +71,6 @@ class SpanDetailsRepoReqAndRes {
         userL2: json['user_l2'] as String,
         enableIT: json['enable_it'] as bool,
         enableIGC: json['enable_igc'] as bool,
-        prevMessages: json['prev_messages'] as List<PreviousMessage>,
         span: SpanData.fromJson(json['span']),
       );
 
@@ -90,7 +85,6 @@ class SpanDetailsRepoReqAndRes {
     if (other.userL2 != userL2) return false;
     if (other.enableIT != enableIT) return false;
     if (other.enableIGC != enableIGC) return false;
-    if (!other.prevMessages.equals(prevMessages)) return false;
     if (const ListEquality().equals(
           other.span.choices?.sorted((a, b) => b.value.compareTo(a.value)),
           span.choices?.sorted((a, b) => b.value.compareTo(a.value)),
@@ -110,7 +104,6 @@ class SpanDetailsRepoReqAndRes {
       userL2.hashCode,
       enableIT.hashCode,
       enableIGC.hashCode,
-      prevMessages.hashCode,
       if (span.choices != null)
         Object.hashAll(
           span.choices!
@@ -139,7 +132,6 @@ final mockRequest = SpanDetailsRepoReqAndRes(
   userL2: "en",
   enableIGC: true,
   enableIT: true,
-  prevMessages: [],
   span: spanDataRepomockSpan,
 );