diff --git a/src/onnx_engine.cc b/src/onnx_engine.cc
index 915cccb..54a73d1 100644
--- a/src/onnx_engine.cc
+++ b/src/onnx_engine.cc
@@ -221,6 +221,8 @@ void OnnxEngine::HandleChatCompletion(
         params->SetInputSequences(*sequences);
 
         auto generator = OgaGenerator::Create(*oga_model_, *params);
+        auto start = std::chrono::system_clock::now();
+        double generated_tokens = 0;
         while (!generator->IsDone() && model_loaded_) {
           generator->ComputeLogits();
           generator->GenerateNextToken();
@@ -241,6 +243,7 @@ void OnnxEngine::HandleChatCompletion(
           status["is_stream"] = true;
           status["status_code"] = k200OK;
           cb(std::move(status), std::move(resp_data));
+          generated_tokens++;
         }
 
         if (!model_loaded_) {
@@ -255,6 +258,12 @@ void OnnxEngine::HandleChatCompletion(
           cb(std::move(status), std::move(respData));
           return;
         }
+        auto end = std::chrono::system_clock::now();
+        auto duration_ms =
+            std::chrono::duration_cast<std::chrono::milliseconds>(end - start)
+                .count();
+        LOG_DEBUG << "Generated tokens per second: "
+                  << generated_tokens / duration_ms * 1000;
 
         LOG_INFO << "End of result";
         Json::Value resp_data;
@@ -281,6 +290,7 @@ void OnnxEngine::HandleChatCompletion(
         // params->SetSearchOption("repetition_penalty", req.frequency_penalty);
         params->SetInputSequences(*sequences);
 
+        auto start = std::chrono::system_clock::now();
         auto output_sequences = oga_model_->Generate(*params);
         const auto output_sequence_length =
             output_sequences->SequenceCount(0) - sequences->SequenceCount(0);
@@ -290,6 +300,12 @@ void OnnxEngine::HandleChatCompletion(
             tokenizer_->Decode(output_sequence_data, output_sequence_length);
 
         // std::cout << "Output: " << std::endl << out_string << std::endl;
+        auto end = std::chrono::system_clock::now();
+        auto duration_ms =
+            std::chrono::duration_cast<std::chrono::milliseconds>(end - start)
+                .count();
+        LOG_DEBUG << "Generated tokens per second: "
+                  << static_cast<double>(output_sequence_length) / duration_ms * 1000;
 
         std::string to_send = out_string.p_;
         auto resp_data = CreateFullReturnJson(GenerateRandomString(20), "_",