# Nvidia and Microsoft advocate for open-weight AI models Tech giants push for open models to maintain US leadership in AI. - **Source:** [Fortune | FORTUNE](https://brifing.si/source/769282ef-327a-4454-909a-3c7936216004) - **Published:** 2026-07-24 - **Topic:** [Data & AI](https://brifing.si/c/data-ai) - **Original article:** - **On Brifing:** https://brifing.si/s/c20500f8-8497-4318-af21-04b637bebce1 ## Joint call from tech giants A coalition of tech companies led by Nvidia and Microsoft urged policymakers to promote open-weight AI models, emphasizing their critical role in maintaining US technological leadership. Companies like Palantir and Meta joined the call, advocating for an open approach to AI development. ## Benefits of open models Open-weight AI models allow users to download and customize the technology, offering greater flexibility for developers and businesses. Nvidia CEO Jensen Huang highlighted how these models make advanced AI more accessible and adaptable. ## China's open model move Chinese startup Moonshot AI's release of its open-weight model Kimi K3 sparked reactions from investors and policymakers. Chinese firms are entering the market with more affordable open models, undercutting US rivals on price. ## Cost of closed systems While some AI developers like OpenAI offer open alternatives, their focus often remains on closed or proprietary systems sold to businesses to recoup high development costs. Open models could reduce this financial barrier. ## Global AI ecosystem Open-weight models could accelerate global AI adoption, potentially boosting chip sales for companies like Nvidia. The letter stressed that a strong, open ecosystem is vital for innovation and prosperity across sectors. ## Strategy in the leadership race Tech firms argue that US AI leadership should be measured by a robust, open ecosystem that permeates all industries, not just one frontier model. This strategy aims to foster innovation and create nationwide opportunities. ## Sources covering this story - https://fortune.com/2026/07/24/nvidia-microsoft-lead-call-for-open-weight-ai-models-after-kimi/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._