Tech firms including GitHub, Hugging Face, and Creative Commons have written an open letter urging the European Union to ease upcoming rules for open-source artificial intelligence models. The letter argues that regulating upstream open-source projects as if they are commercial products or deployed AI systems would hinder open source AI development. The group provided five suggestions to ensure that the AI Act works for open source models, including defining AI components clearly and clarifying that collaborative development on open source models does not subject developers to the bill requirements. The European Parliament passed the Act in June, and the next step involves individual negotiations with members of the EU to smooth out the details.