Midjourney, Inc. is an independent research lab that builds AI models for generating images and video. The company's main project is a set of image and video models; its website describes it as a community-funded research lab and refers product questions to Discord. The models are not published as open source.
The company was founded in San Francisco, and public sources describe it as independent. It is based in the United States. Where user data is processed and which GDPR terms apply should be confirmed with the vendor. For European organisations, using the service means sending prompts and images to a US company. They should check whether a data processing agreement exists and whether personal data or confidential material should be entered at all.