Cloudflare, Inc. (Wikipedia) is an American company that provides content delivery network services, cloud cybersecurity, DDoS mitigation, and ICANN-accredited domain registration services.
Cloudflare Workers AI allows you to run machine learning models, on the Cloudflare network, from your code via REST API.
Workers AI Developer Docs lists all text embeddings models available.

​
Setting up

Both a Cloudflare Account ID and Workers AI API token are required. Find how to obtain them from this document. You can pass these parameters explicitly or define as environmental variables. 
import os

from dotenv import load_dotenv

load_dotenv(".env")

cf_acct_id = os.getenv("CF_ACCOUNT_ID")

cf_ai_token = os.getenv("CF_AI_API_TOKEN")

​
Example

from langchain_cloudflare.embeddings import (
    CloudflareWorkersAIEmbeddings,
)

embeddings = CloudflareWorkersAIEmbeddings(
    account_id=cf_acct_id,
    api_token=cf_ai_token,
    model_name="@cf/baai/bge-small-en-v1.5",
)
# single string embeddings
query_result = embeddings.embed_query("test")
len(query_result), query_result[:3]

(384, [-0.033660888671875, 0.039764404296875, 0.03558349609375])

# string embeddings in batches
batch_query_result = embeddings.embed_documents(["test1", "test2", "test3"])
len(batch_query_result), len(batch_query_result[0])

(3, 384)