The labs list four inputs, and only one is bought from a holder: sell into that one
The labs' own disclosures name where training data comes from. Anthropic: "publicly available information on the Internet", "non-public data from third parties", "data provided by data-labeling services and paid contractors", opted-in users and "data we generated internally". Apple: data "licensed from publishers", public or open datasets and pages "crawled by our web-crawler, Applebot". Meta: Llama 3 on "over 15 trillion tokens of data from publicly available sources", Llama 4 on "publicly available, licensed data" and its own products. Microsoft's phi-4 "strategically incorporates synthetic data throughout the training process". Public pages they crawl themselves and generated data they make themselves; what they take from outside is non-public or licensed data and paid labour. OpenAI's own data acquisition team "manages web crawling and GPTBot services".
Dated 22 Oct 2026Source checked 22 Oct 2026Quote found on its page again 28 Oct 2026Basis: strong
“Claude Opus 4.6 was trained on a proprietary mix of publicly available information on the Internet as of May 2025, as well as non-public data from third parties, data provided by data-labeling services and paid contractors, data from Claude users who have opted in to have their data used for training, and data we generated internally at Anthropic.”
Anthropic: Transparency Hub, model report (Claude Opus 4.6 entry), checked 22 Oct 2026
Everything read from this source (1)Archived copy, 14 Oct 2026
Apple Machine Learning Research: Updates to Apple's On-Device and Server Foundation Language Models, checked 9 Jun 2025
Everything read from this source (1)Archived copy, 15 Oct 2026
Meta: Llama 3 model card, checked 18 Apr 2024
Everything read from this source (1)Archived copy, 4 Oct 2026
Meta: Llama 4 model card, checked 5 Apr 2025
Microsoft Research: Phi-4 Technical Report (arXiv 2412.08905), checked 12 Dec 2024
Everything read from this source (1)Archived copy, 16 Oct 2026
OpenAI: Full-Stack SWE, Data Acquisition (Foundations), job posting, checked 12 Feb 2025
Everything read from this source (1)Archived copy, 9 Oct 2026
It is shown on its own, not counted into a figure.
Cited in this guide