Python Software Foundation: PyPI, AI Ecosystem & Funding

The foundation behind the language

The Python Software Foundation is the 501(c)(3) nonprofit that holds Python's intellectual property and funds the work that keeps the language and its ecosystem running: it employs a full-time CPython Developer in Residence who reviews pull requests and drives structural work on the interpreter, maintains the Python Package Index, and organizes PyCon US, the longest-running annual Python conference. It also fiscally sponsors 20 related organizations, including PyLadies, and in 2024 distributed $655,000 in grants to 257 groups or individuals across 61 countries. [1]

That makes the PSF an infrastructure funder rather than a builder of AI systems itself. It does not train models, publish research or sell a product; its relevance to AI runs entirely through Python's position as the language most of that work is written in and PyPI's position as the registry most of it is installed from. [1]

The language AI is mostly written in

GitHub's 2025 Octoverse report found TypeScript overtaking Python as the single most-used language on GitHub by monthly contributors in August 2025, driven partly by AI coding tools generating and scaffolding more TypeScript. Inside AI work specifically, the same report found Python still dominant: it now powers nearly half of all new AI-tagged repositories, some 582,000 of them, up more than 50 percent year over year, with Jupyter notebooks as the standard environment for experimentation. Python's lead in overall GitHub activity and its lead inside AI repositories are different measurements, and the second one is the more direct link to the timeline. [3]

A $1.5 million question of independence

In October 2025 the PSF withdrew a $1.5 million funding proposal to a US National Science Foundation grant program after the program asked the foundation to affirm it would not undertake diversity, equity and inclusion work, with or without the government funds. The PSF said that condition conflicted with language in its own mission around growing a diverse, international community of Python programmers, and that it chose to give up the funding rather than accept the condition. [4]

Three months later, on January 13, 2026, Anthropic gave the PSF $1.5 million over two years, earmarked for PyPI security work aimed at supply-chain attacks, the Developer in Residence program, community grants and core infrastructure. The PSF's own announcement describes the gift as letting it make progress on a security roadmap it had already set, not as funding a new priority Anthropic chose for it. [5]

Atlas interpretation: The two episodes land on the same figure for different reasons, which is coincidence, not a pattern. What they show together is a foundation whose budget depends on a mix of government grants, corporate donations and PyCon revenue, none of which it treats as unconditional. PyPI's security posture matters well beyond Python programmers now, since a growing share of AI tooling installs its dependencies from that same registry, which is what makes a frontier AI lab funding PyPI's supply-chain defenses a plausible transaction for both sides rather than a strange one. [4][5]