To utilize streaming, use a [`CallbackHandler`](https://github.com/hwchase17/langchainjs/blob/main/langchain/src/callbacks/base.ts) like so:

import CodeBlock from "@theme/CodeBlock";
import StreamingExample from "@examples/models/llm/llm_streaming.ts";

<CodeBlock language="typescript">{StreamingExample}</CodeBlock>

We still have access to the end `LLMResult` if using `generate`. However, `token_usage` is not currently supported for streaming.