Recently, regarding the open-weights AI model “Nemotron 3” released by NVIDIA, there are scattered media reports mistakenly describing it as open source. Because there is concern that these reports encourage ignoring the usage risks of the NVIDIA Open Model License Agreement (version dated October 24, 2025; hereinafter referred to as…
When GitHub Copilot first appeared, many developers viewed it as an assistive tool for coding. The honest impression of most developers was likely that while it was useful, it was not a tool to which one could entrust the entire coding process. However, in this year of 2025, the term…
When GitHub Copilot was launched in 2021, the fact that its training data included a vast amount of Open Source code publicly available on GitHub attracted significant attention, sparking lively debates regarding licensing. While there were issues concerning conditions such as attribution required by most licenses, there was a particularly…
The Munich I Regional Court has delivered a sweeping victory for GEMA, Germany’s music rights organization, in its lawsuit against OpenAI, the operator of ChatGPT. The court substantially granted GEMA’s claims for injunctive relief, disclosure of information, and damages. While significant as OpenAI’s first major legal defeat, the ruling is…
The debate surrounding the Codes of Conduct (CoC) adopted by Open Source projects may be reaching a turning point. In September 2025, a controversy erupted over the governance of RubyGems, a cornerstone of the Ruby ecosystem, sending significant ripples through the community. While not directly related, this turmoil served as…
While a previous article detailed the long-held view in the United States that Open Source licenses were not contracts but “unilateral permissions” — a perspective that gained legal validation in Jacobsen v. Katzer — the ruling in that very case was also a crucial step on the path toward recognizing…
In Japan, the common view is to treat an Open Source license as a license agreement, or a contract. This is also the case in the EU. However, in the United States—the origin point for almost every aspect of Open Source—an Open Source license has long been considered not a…
Although the number of AI models distributed under Open Source licenses is increasing, it can be said that AI systems in which all related components, including training data, are open are still in a developmental stage, even as a few promising systems have emerged. In this context, this past May,…
QEMU has formally adopted a policy that rejects contributions containing code generated by AI tools. The core reason is the concern that such AI-generated code cannot satisfy the requirements of the Developer’s Certificate of Origin (DCO), which contributors rely on to attest to the validity of their patches. What, then,…
DebConf is an annual developers’ conference organized by the Debian Project. Although it has a long history, it has never been held in Japan. Is that because Debian GNU/Linux is unpopular here? Not necessarily. There were times when the prospect of gathering several hundred Debian developers looked attractive to Japanese…
The term AGI is being trumpeted everywhere, but will every facet of human behavior really end up being replaced by AI? I remain skeptical. In software, for example, it already looks as though AI will soon be able to handle every stage of even the largest system projects. Yet I…
Last month, the U.S. Copyright Office released a study report on the fair-use implications of using copyrighted works without permission to train AI systems. As is widely known, the Register of Copyrights was then abruptly—and somewhat mysteriously—removed from office. https://www.copyright.gov/ai/ Around an agency that normally attracts little public attention, an…
Back in the 1990s, I was concerned that Japan was beginning to lag behind the United States in software technology. The primary reason for this delay was likely Japan’s heavy focus on hardware at the time, viewing software merely as an accessory to hardware. I believed that Open Source (then…
While examining the licensing details of Google’s Gemma model, I noticed a potentially puzzling phenomenon: you can freely assign a license to the model’s outputs, yet depending on how those outputs are used, the original Terms of Use might suddenly propagate to the resulting work. Outputs vs. Model Derivatives The…
DeepSeek has had a major global impact. This appears to stem not only from the emergence of a new force in China that threatens the dominance of major U.S. AI vendors, but also from the fact that the AI model itself is being distributed under the MIT License, which is…
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When GitHub Copilot was launched in 2021, the fact that its training data included a vast amount of Open Source code publicly available on GitHub attracted significant attention, sparking lively debates regarding licensing. While there were issues concerning conditions such as attribution required by most licenses, there was a particularly high volume of discourse suggesting…
In Japan, the common view is to treat an Open Source license as a license agreement, or a contract. This is also the case in the EU. However, in the United States—the origin point for almost every aspect of Open Source—an Open Source license has long been considered not a contract, but a “unilateral permission”…
Although the number of AI models distributed under Open Source licenses is increasing, it can be said that AI systems in which all related components, including training data, are open are still in a developmental stage, even as a few promising systems have emerged. In this context, this past May, the Linux Foundation, in collaboration…
While examining the licensing details of Google’s Gemma model, I noticed a potentially puzzling phenomenon: you can freely assign a license to the model’s outputs, yet depending on how those outputs are used, the original Terms of Use might suddenly propagate to the resulting work. Outputs vs. Model Derivatives The Gemma Terms of Use distinguish…
DeepSeek has had a major global impact. This appears to stem not only from the emergence of a new force in China that threatens the dominance of major U.S. AI vendors, but also from the fact that the AI model itself is being distributed under the MIT License, which is an Open Source license. Nevertheless,…
Although it has already been explained that the Llama model and the Llama License (Llama Community License Agreement) do not, in any sense, qualify as Open Source, it bears noting that the Llama License contains several additional issues. While not directly relevant to whether it meets Open Source criteria, these provisions may nonetheless cause the…
— An Explanation of Llama’s Supposed “Open Source” Status and the Serious Risks of Using Models under the Llama License — It is widely recognized—despite Meta’s CEO persistently promoting the notion that “Llama is Open Source”—that the Llama License is in fact not Open Source. Yet few individuals have clearly articulated the precise reasons why…
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