PUT langchain_index
{
  "mappings": {
    "properties": {
      "vector": {
        "type": "dense_vector",
        "dims": 768,
        "index": true,
        "similarity": "cosine",
        "index_options": {
          "type": "int8_hnsw",
          "m": 16,
          "ef_construction": 100
        }
      },
      "content": {
        "type": "text"
      }
    }
  }
}

