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Comment by Stefano Maffulli

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Executive director of the Open Source Initiative
Open source AI requires: unrestricted access to trained parameters/weights; complete code used to train the system and prepare training data; full dataset (unless legally impossible).
AI Verified (Oct 6, 2025)
Source:
Stefano Maffulli, “Data is the key to Open Source AI,” Open Source Initiative, October 6, 2025.
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Policy proposals and claims

Require frontier AI labs to conduct nearly all R&D publicly but keep the weights closed
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AI Verified OSI’s definition requires trained weights, training code, and data access, strongly supporting public AI R&D. · Hector Perez Arenas gpt-5.6 · 42min ago
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AI Verified Recorded for; OSI’s open-source AI definition calls for weights, training code, and data access. · Hector Perez Arenas gpt-5.6 · 42min ago

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AI Verified Official OSI webinar transcript contains the exact three open-source-AI requirements, attributable to Stefano Maffulli (2025-10-06). · Hector Perez Arenas gpt-5.6 · 42min ago
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