Aitra Day
Thursday, December 10
Time: 10:00 – 16:00
Location: Toranomon Hills Forum | Meeting Room 1 (5F)
Registration Cost: Free (lunch included)
Aitra Day marks the launch of Aitra, an open source initiative for AI Infrastructure Intelligence hosted by the SODA Foundation, part of the Linux Foundation. Aitra connects models, workloads, and inference engines to the infrastructure that runs them, from accelerator to facility, to measure, understand, and optimize how AI infrastructure is used. The day introduces the latest releases of Aitra Meter and Aitra Benchmark and opens the Aitra working group. Sessions include technical talks, live demos, and panel discussions on workload attribution, AI infrastructure benchmarking, cost and capacity, and energy efficiency. Engineers, researchers, cloud and infrastructure providers, hardware vendors, and open source communities are welcome. Visit aitra.ai for more information.
How to Register: Pre-registration is required, no Open Source Summit Japan pass is needed. To register for Aitra Day, visit here.
ONE Summit Japan
Thursday, December 10 – Friday, December 11
Time: 9:00 – 18:00
Location: Toranomon Hills Forum
Registration Cost: ¥58,700 JPY/$360 USD
Open Networking & Edge Summit is the ONE event focused on open networking across Access, Edge, and Cloud. Join architects and decision makers working on today’s challenges and the opportunities of tomorrow’s networks and shape the future of 5G, 6G, Public Infrastructure, Industry 4.0, and more. Visit our website for more information about the event.
Open Source Summit Japan registrants can add ONE Summit onto their existing registration for an exclusive ticket price of ¥58,700 JPY/$360 USD.
How to Register: Pre-registration is required. To register for ONE Summit, add it to your Open Source Summit Japan registration.
Open Compliance Summit
Thursday, December 10 – Friday, December 11
Time: 9:00 – 18:00
Location: Toranomon Hills Forum
Registration Cost: ¥16,000 for any invitation request that is accepted.
Open Compliance Summit brings together compliance professionals, legal experts, engineering leaders, and open source practitioners to collaborate on the challenges and opportunities of open source compliance. Designed for Linux Foundation members and select invitees, this exclusive event fosters candid conversations, practical knowledge sharing, and collaboration on the processes, policies, and tools that help organizations build effective compliance programs.
How to Register: How to Register: Advance registration and approval are required to attend. To request an invitation and learn more, visit the event website.
PyTorch Day Japan
Thursday, December 10
Time: 10:00 – 19:00
Registration Cost: ¥5,000 JPY/$32 USD Standard, ¥8,000 JPY/$50 USD Late
PyTorch Day Japan 2026, proudly hosted by the PyTorch Foundation, Hugging Face, IBM, and Mitsubishi Electric, is the premier gathering dedicated to open source AI and the impact of PyTorch Foundation projects like PyTorch, vLLM, DeepSpeed, Ray, Helion, and Safetensors. Scheduled for December 10 in Tokyo, Japan, this community-driven event provides an unparalleled platform for PyTorch enthusiasts, machine learning engineers, AI researchers, and industry professionals.
Immerse yourself in a vibrant day of insightful technical talks and interactive discussions designed to foster knowledge exchange and collaboration. PyTorch Day Japan is your gateway to connecting with leading experts and peers in the open source AI community, offering you unique opportunities to explore cutting-edge advancements in training, inference, responsible AI, and more.
How to Register: Pre-registration is required. To register for PyTorch Day Japan, visit the event website.
