[Bug]: Bedrock Claude Sonnet 4 model fails with UnknownOperationException on /messages endpoint #13618
Description
What happened?
How to reproduce:
Make a request to the /messages endpoint using model bedrock/converse/us.anthropic.claude-sonnet-4-20250514-v1:0
Observe the error response
Error:
{
"Output": {
"__type": "com.amazon.coral.service#UnknownOperationException"
},
"Version": "1.0"
}
Relevant log output
Are you a ML Ops Team?
No
What LiteLLM version are you on ?
1.75.5
Twitter / LinkedIn details
No response