diff --git a/ortools/linear_solver/BUILD.bazel b/ortools/linear_solver/BUILD.bazel
index ac5e97dbb3..4765f6053b 100644
--- a/ortools/linear_solver/BUILD.bazel
+++ b/ortools/linear_solver/BUILD.bazel
@@ -404,7 +404,6 @@ cc_binary(
         "//ortools/base",
         "//ortools/base:file",
         "//ortools/lp_data:lp_parser",
-        "//ortools/lp_data:model_reader",
         "//ortools/lp_data:mps_reader",
         "//ortools/lp_data:sol_reader",
         "@abseil-cpp//absl/status",
diff --git a/ortools/lp_data/BUILD.bazel b/ortools/lp_data/BUILD.bazel
index b7723281a6..15cd8880c9 100644
--- a/ortools/lp_data/BUILD.bazel
+++ b/ortools/lp_data/BUILD.bazel
@@ -323,22 +323,6 @@ cc_library(
     ],
 )
 
-cc_library(
-    name = "model_reader",
-    srcs = ["model_reader.cc"],
-    hdrs = ["model_reader.h"],
-    deps = [
-        ":lp_data",
-        ":mps_reader",
-        ":proto_utils",
-        #        "//net/proto2/util/public:differencer",
-        "//ortools/base",
-        "//ortools/base:file",
-        "//ortools/linear_solver:linear_solver_cc_proto",
-        "//ortools/util:file_util",
-    ],
-)
-
 cc_library(
     name = "lp_decomposer",
     srcs = ["lp_decomposer.cc"],
diff --git a/ortools/lp_data/model_reader.cc b/ortools/lp_data/model_reader.cc
deleted file mode 100644
index a64051d11a..0000000000
--- a/ortools/lp_data/model_reader.cc
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright 2010-2025 Google LLC
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "ortools/lp_data/model_reader.h"
-
-#include <string>
-
-#include "absl/log/log.h"
-#include "ortools/linear_solver/linear_solver.pb.h"
-#include "ortools/lp_data/lp_data.h"
-#include "ortools/lp_data/proto_utils.h"
-#include "ortools/util/file_util.h"
-
-namespace operations_research {
-namespace glop {
-
-bool LoadMPModelProtoFromModelOrRequest(const std::string& input_file_path,
-                                        MPModelProto* model) {
-  MPModelProto model_proto;
-  MPModelRequest request_proto;
-  ReadFileToProto(input_file_path, &model_proto).IgnoreError();
-  ReadFileToProto(input_file_path, &request_proto).IgnoreError();
-  // If the input proto is in binary format, both ReadFileToProto could return
-  // true. Instead use the actual number of variables found to test the
-  // correct format of the input.
-  const bool is_model_proto = model_proto.variable_size() > 0;
-  const bool is_request_proto = request_proto.model().variable_size() > 0;
-  if (!is_model_proto && !is_request_proto) {
-    LOG(ERROR) << "Failed to parse '" << input_file_path
-               << "' as an MPModelProto or an MPModelRequest.";
-    return false;
-  } else {
-    if (is_model_proto && is_request_proto) {
-      LOG(ERROR) << input_file_path
-                 << " is parsing as both MPModelProto and MPModelRequest";
-      return false;
-    }
-    if (is_request_proto) {
-      VLOG(1) << "Read input proto as an MPModelRequest.";
-      model_proto.Swap(request_proto.mutable_model());
-    } else {
-      VLOG(1) << "Read input proto as an MPModelProto.";
-    }
-  }
-  model->Swap(&model_proto);
-  return true;
-}
-
-bool LoadLinearProgramFromModelOrRequest(const std::string& input_file_path,
-                                         LinearProgram* linear_program) {
-  MPModelProto model_proto;
-  if (LoadMPModelProtoFromModelOrRequest(input_file_path, &model_proto)) {
-    MPModelProtoToLinearProgram(model_proto, linear_program);
-    return true;
-  }
-  return false;
-}
-
-}  // namespace glop
-}  // namespace operations_research
diff --git a/ortools/lp_data/model_reader.h b/ortools/lp_data/model_reader.h
deleted file mode 100644
index 1293d985a5..0000000000
--- a/ortools/lp_data/model_reader.h
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2010-2025 Google LLC
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef OR_TOOLS_LP_DATA_MODEL_READER_H_
-#define OR_TOOLS_LP_DATA_MODEL_READER_H_
-
-#include <string>
-
-#include "ortools/linear_solver/linear_solver.pb.h"
-#include "ortools/lp_data/lp_data.h"
-
-namespace operations_research {
-namespace glop {
-
-// Helper function to read data from model files into MPModelProto and
-// LinearProgram.
-bool LoadMPModelProtoFromModelOrRequest(const std::string& input_file_path,
-                                        MPModelProto* model);
-bool LoadLinearProgramFromModelOrRequest(const std::string& input_file_path,
-                                         LinearProgram* linear_program);
-
-}  // namespace glop
-}  // namespace operations_research
-
-#endif  // OR_TOOLS_LP_DATA_MODEL_READER_H_