What will be the PyTorch of AI engineering at the end of 2025?
22
Ṁ2477
Jan 1
78%
langchain
2%
instructor
2%
pydantic-ai
2%
dspy
1.5%
smolagents
1%
Cursor [[Very Likely NO. cursor.com has no AI engineer package]]
0.9%
embedchain
6%
mcp
7%
Other

Measured by monthly download as reported on PyPI stats at the end of the year/early in 2026.


Current stats (3/5/2025)
- langchain: 36,537,062
- instructor: 1,701,963
- dspy: 1,047,257
- pydantic-ai: 362,027
- smolagents: 124,001

Criteria for inclusion as a valid answer:

  • Scope: Only Python packages that integrate APIs and streamline common AI engineering workflows are eligible.​

  • Functionality: Packages must serve as frameworks or libraries facilitating AI development.

  • Update 2025-12-11 (PST) (AI summary of creator comment): The winner will be determined by largest number of PyPI downloads at the end of 2025/early 2026.

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9 Comments
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bought Ṁ90 langchain YES

Winner defined as largest num pypi downloads right?

@prototopical yes

Cursor [[Very Likely NO. cursor.com has no AI engineer package]]
bought Ṁ100 Cursor [[Very Likely... NO

@ikoukas Do they have an agent / prompting package? This will resolve NO if not.

@jgyou they have chat with workspace and code modification via prompting. It does refer to it as agent

@ikoukas That's not an AI engineering package and is unavailable on PyPI for tracking.

@jgyou Okay, I concede

@ikoukas Sent you 100M to reimburse the costs.

@jgyou wow, thanks

reposted

Anyone can add answers. I just went with packages on my own radar.

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