# Machine Notes

> AI and tech news.

Beta: trackers update automatically from public data; stories are written and checked by people.

## Explainers

- [What is an AI agent?](https://machinenotes.com/explainers/what-is-an-ai-agent): A language model that can take steps on its own, check what happened and try again. Here is what that means and where it breaks.
- [What is capex, and why AI needs so much of it](https://machinenotes.com/explainers/what-is-capex): Capital expenditure is money spent on things that last. For Big Tech right now, that mostly means data centres full of AI chips.
- [Why GPUs cost so much](https://machinenotes.com/explainers/why-gpus-cost-so-much): The chips that train AI models are scarce, hard to make and wrapped in software nobody else has. Here is where the price comes from.

## Trackers

- [Official wire](https://machinenotes.com/wire): headlines and links from the official newsrooms of AI and tech companies. Updated 16 Oct 2026, 11:00 UTC.
- [Models](https://machinenotes.com/models): trending open models on Hugging Face and notable models with training compute (Epoch AI, CC BY 4.0). Updated 16 Oct 2026, 11:00 UTC.
- [AI rules](https://machinenotes.com/policy): US Federal Register documents about AI. Updated 16 Oct 2026, 11:00 UTC.
- [Research](https://machinenotes.com/research): most upvoted papers on Hugging Face daily papers. Updated 16 Oct 2026, 11:00 UTC.
- [AI repos](https://machinenotes.com/repos): new AI repositories on GitHub gaining stars. Updated 16 Oct 2026, 11:00 UTC.
- [AI tool releases](https://machinenotes.com/releases): new versions of the main open-source AI tools and SDKs. Updated 16 Oct 2026, 11:00 UTC.
- [AI outages](https://machinenotes.com/status): incidents on the status pages of OpenAI, Anthropic, Google Gemini, GitHub, Cursor and Perplexity. Updated 16 Oct 2026, 11:00 UTC.
- [Today in AI](https://machinenotes.com/today): everything new on the trackers today; past days at https://machinenotes.com/daily (2 days).

## About

- [About Machine Notes](https://machinenotes.com/about): AI and tech news.
- [Editorial standards](https://machinenotes.com/standards): How we report, check and correct.
- [How we use AI](https://machinenotes.com/ai-disclosure): What software does on this site, and what people do.
- [Corrections](https://machinenotes.com/corrections): Every change we make to a published story, newest first.
- [Data sources](https://machinenotes.com/sources): Where the trackers get their data, and the terms we follow.

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