To use together embeddings, you need to import TogetherEmbedding from @llamaindex/together.
import { Settings } from "llamaindex";import { TogetherEmbedding } from "@llamaindex/together";Settings.embedModel = new TogetherEmbedding({ apiKey: "<YOUR_API_KEY>",});const document = new Document({ text: essay, id_: "essay" });const index = await VectorStoreIndex.fromDocuments([document]);const queryEngine = index.asQueryEngine();const query = "What is the meaning of life?";const results = await queryEngine.query({ query,});