After getting response from OpenAI how to get input and output token count

[hemadrio]

After getting response from OpenAI how to get input and output token count in langchain spring boot
not using logging

[langchain4j]

If you are using AI Services, you can use Response<AiMessage> response type:

interface Assistant {

    Response<AiMessage> chat(String message);
}

Response contains TokenUsage.