Company🇺🇸 United States
Thinking Machines Lab37 people
Thinking Machines Lab develops tools and models that make advanced AI systems more customizable and capable. Its work includes Tinker, an API for training and fine-tuning models, and Inkling, an open-weight model designed for efficient experimentation.
Company🇺🇸 United States
Reflection AI7 people
Builds open-weight frontier models and the software and infrastructure needed to customize and deploy them. Its strategy combines large-scale pretraining and reinforcement learning with publicly released weights, research and development tools.
Company🇺🇸 San Francisco
Mirendil4 people
San Francisco AI startup building tools to democratize frontier AI R&D and help scientists develop specialized AI systems. Formally announced with a 20-person founding team drawn from Anthropic, xAI, Google DeepMind, OpenAI, and other frontier institutions.
Company🇨🇳 Beijing
Moonshot AI4 people
Moonshot AI develops the Kimi family of foundation models and the Kimi assistant. The lab is known for long-context systems and open-weight models for reasoning, coding, multimodal work and agents; its technical team includes inventors of Transformer-XL and RoPE.
Company🇺🇸 San Francisco
Arcee AI3 people
Arcee AI builds open-weight language models that organizations can download, adapt and run on their own infrastructure. Its Trinity family spans compact on-device models and larger reasoning systems, emphasizing efficient deployment and user control rather than dependence on a closed model provider.
Artificial Superintelligence Alliance1 person
The Artificial Superintelligence Alliance coordinates open, decentralized AI development across SingularityNET, Fetch.ai, and other member networks, combining research, infrastructure, data, and a shared token ecosystem.
Company🇺🇸 Mountain View
Bespoke Labs1 person
An applied research lab curating training data and reinforcement-learning environments for AI agents. Its open work includes the OpenThoughts reasoning dataset and the Bespoke-MiniCheck and Bespoke-MiniChart models.
Company🇺🇸 San Francisco
Sophont1 person
Medical-AI startup founded by Tanishq Abraham and Paul Scotti. Builds open, multimodal medical foundation models that reason across imaging, clinical notes, and lab data to assist clinicians.