# 🧪Response Synthesizer

#### 1)Refine

Create and refine an answer by sequentially going through each retrieved text chunk.

**Pros**: Good for more detailed answers

**Cons**: Separate LLM call per Node (can be expensive)

<figure><img src="https://1720595571-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxWXmt1Z68dgle5JORrEw%2Fuploads%2FdOlX2oIDmRUVaPqyfNhJ%2Fimage.png?alt=media&#x26;token=14080292-84bf-4d5c-bd90-178efee342d2" alt=""><figcaption></figcaption></figure>

#### 2)Tree Summarize

When provided with text chunks and a query, recursively build a tree structure and return the root node as the result.

**Pros**: Beneficial for summarization tasks

**Cons**: Accuracy of answer might be lost during traversal of tree structure

<figure><img src="https://1720595571-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxWXmt1Z68dgle5JORrEw%2Fuploads%2Fuy9biYEKm1fRE0BSmjfy%2Fimage.png?alt=media&#x26;token=61f26023-2953-40dd-9fe8-31d793a1f5e9" alt=""><figcaption></figcaption></figure>