> For the complete documentation index, see [llms.txt](https://tailwindsdocs.innovativesol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tailwindsdocs.innovativesol.com/readme/chatflows/langchain/memory/conversation-summary-memory.md).

# Conversation Summary Memory

This memory type creates a brief summary of the conversation over time. This is useful for shortening information from long discussions. It updates and saves a current summary as the conversation goes on. This is especially helpful in longer chats, where saving every past message would take up too much space.

<figure><img src="https://662370747-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3VoWwSsyrEg0DEvIIjv9%2Fuploads%2Fgit-blob-09dafdadb467bb17f8f012923246461ba6cb6847%2Fimage%20(3)%20(1)%20(1)%20(1)%20(2).png?alt=media" alt="" width="296"><figcaption></figcaption></figure>

## Input

| Parameter  | Description                                                                   | Default       |
| ---------- | ----------------------------------------------------------------------------- | ------------- |
| Chat Model | LLM used to perform summarization                                             |               |
| Session Id | An ID to retrieve/store messages. If not specified, a random ID will be used. |               |
| Memory Key | A key used to format messages in prompt template                              | chat\_history |