> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.deepgram.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.deepgram.com/_mcp/server.

## STT DSLM Summarization

We're excited to announce the release of our first domain-specific language model (DSLM) for speech summarization of call center interactions.

You can request our new Summarization API  endpoint by adding a summarize parameter set to v2 in the API call. It will then return a summary object in the response body of the output. The summary object includes status and a concise summary of the entire conversation.

The URL query to call the DSLM-powered Summarization API might look like this:

`https://api.deepgram.com/v1/listen?summarize=v2`

Example curl request:

You can send requests to the API with an Authorization header that references your project's API key

- Authorization: Token YOUR_DEEPGRAM_API_KEY

The output response will contain the generated summary based on the provided audio. Summarization V2  supports English and Pre-Recorded audio.

Primary difference between V1 (summarize=true) and V2 (summarize=v2)

- V1 provides summaries per channel. V2 provides a single summary across all the channels.
- V1 response contains summary objects (with summary, start, and end word). V2 response contains a single object with result and short key.

- Learn more about using our new [Summarization V2 feature.](https://developers.deepgram.com/docs/summarization)
- Test Summarization V2 using our [API Playground.](https://playground.deepgram.com/)

We are thrilled to get this feature into your hands and await your feedback. Please share it with us at [Product Feedback](/support) or your dedicated support channel.