Update README.md

README.md

@@ -155,6 +155,18 @@ guidellm benchmark \
   --output-path "Llama-4-Maverick-HumanEval.json" \
   --backend-args '{"extra_body": {"chat_completions": {"temperature":0.6, "top_p":0.9}}}'
 ```
+GuideLLM interface changed, so for compatibility with the latest version (v0.6.0), please use the following command:
+```bash
+GUIDELLM__PREFERRED_ROUTE="chat_completions" \
+guidellm benchmark \
+  --target "http://localhost:8000/v1" \
+  --data "RedHatAI/speculator_benchmarks" \
+  --data-args '{"data_files": "HumanEval.jsonl"}' \
+  --profile sweep \
+  --max-seconds 1800 \
+  --output-path "my_output.json" \
+  --backend-args '{"extras": {"body": {"temperature":0.6, "top_p":0.95, "top_k":20}}}'
+```
 </details>