OpenAIEmbeddings - embed_documents - chunk size bug

[AndreiDumitrescu26]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

No example code needed. The bug is in the current version of the repo.

Error Message and Stack Trace (if applicable)

No response

Description

In the following code:

langchain/libs/partners/openai/langchain_openai/embeddings/base.py

Lines 573 to 582 in f4e3e86

	chunk_size_ = chunk_size or self.chunk_size
	if not self.check_embedding_ctx_length:
	embeddings: List[List[float]] = []
	for i in range(0, len(texts), self.chunk_size):
	response = self.client.create(
	input=texts[i : i + chunk_size_], **self._invocation_params
	)
	if not isinstance(response, dict):
	response = response.dict()
	embeddings.extend(r["embedding"] for r in response["data"])

at line 576 you should use chunk_size_ rather than self.chunk_size.

System Info

System Information

OS: Linux
OS Version: #17~22.04.1-Ubuntu SMP Sat Mar 9 04:50:38 UTC 2024
Python Version: 3.12.8 (main, Jan 5 2025, 05:33:15) [Clang 19.1.6 ]

Package Information

langchain_core: 0.3.34
langchain: 0.3.17
langchain_community: 0.3.16
langsmith: 0.3.6
langchain_chroma: 0.2.1
langchain_openai: 0.3.5
langchain_text_splitters: 0.3.6
langgraph_sdk: 0.1.51

Optional packages not installed

langserve

Other Dependencies

aiohttp: 3.11.12
async-timeout: Installed. No version info available.
chromadb: 0.6.3
dataclasses-json: 0.6.7
fastapi: 0.115.8
httpx: 0.28.1
httpx-sse: 0.4.0
jsonpatch<2.0,>=1.33: Installed. No version info available.
langchain-core<1.0.0,>=0.3.34: Installed. No version info available.
langsmith-pyo3: Installed. No version info available.
langsmith<0.4,>=0.1.125: Installed. No version info available.
numpy: 1.26.4
openai<2.0.0,>=1.58.1: Installed. No version info available.
orjson: 3.10.15
packaging<25,>=23.2: Installed. No version info available.
pydantic: 2.10.6
pydantic-settings: 2.7.1
pydantic<3.0.0,>=2.5.2;: Installed. No version info available.
pydantic<3.0.0,>=2.7.4;: Installed. No version info available.
pytest: 8.3.4
PyYAML: 6.0.2
PyYAML>=5.3: Installed. No version info available.
requests: 2.32.3
requests-toolbelt: 1.0.0
rich: 13.9.4
SQLAlchemy: 2.0.38
tenacity: 9.0.0
tenacity!=8.4.0,<10.0.0,>=8.1.0: Installed. No version info available.
tiktoken<1,>=0.7: Installed. No version info available.
typing-extensions>=4.7: Installed. No version info available.
zstandard: 0.23.0