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feat: Add output_dimension support for Voyage AI embeddings #2593

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feat: Add output_dimension support for Voyage AI embeddings #2593

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7 changes: 6 additions & 1 deletion lightrag/llm/openai.py
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Original file line number Diff line number Diff line change
Expand Up @@ -825,7 +825,12 @@ async def openai_embed(

# Add dimensions parameter only if embedding_dim is provided
if embedding_dim is not None:
api_params["dimensions"] = embedding_dim
# Voyage AI requires 'output_dimension' via extra_body, not 'dimensions'
is_voyage_ai = base_url and "voyageai.com" in base_url
if is_voyage_ai:
api_params["extra_body"] = {"output_dimension": embedding_dim}
else:
api_params["dimensions"] = embedding_dim

# Make API call
response = await openai_async_client.embeddings.create(**api_params)
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