Support for OpenRouter embedding models

[ndrewpj]

Hi!

I tried to use the embedding models in the .env file as "openai" API compatible but nothing happens:

EMBEDDING_BINDING=openai
EMBEDDING_MODEL=qwen/qwen3-embedding-8b
EMBEDDING_DIM=4096
EMBEDDING_SEND_DIM=false
EMBEDDING_TOKEN_LIMIT=8192
EMBEDDING_BINDING_HOST=https://openrouter.ai/api/v1
EMBEDDING_BINDING_API_KEY=sk-or-v1-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Using the python script everything works:

from openai import OpenAI

client = OpenAI(
  base_url="https://openrouter.ai/api/v1",
  api_key="sk-or-v1-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
)

embedding = client.embeddings.create(
  model="qwen/qwen3-embedding-8b",
  input="Your text string goes here",
  # input: ["text1", "text2", "text3"] # batch embeddings also supported!
  encoding_format="float"
)
print(embedding.data[0].embedding)