A report questions the claims of AI companies regarding their ability to reduce carbon emissions. While some studies suggest AI could lower emissions by 5% by 2035, evidence supporting these claims is weak. Only 26% of AI companies provided academic support for their claims, with many relying on corporate reports. The report highlights that the evidence for AI's climate benefits is weak, while evidence of harm is strong. No generative AI systems have shown substantial emissions reductions, and the energy use from these technologies may outweigh any benefits.