Builder is a monthly AI meetup in San Francisco for people who like to build. Devs, designers, PMs, founders, and anyone eager to tinker. We explore the tools and systems shaping today's frontier technologies, including AI models, infrastructure, agents, and open payment protocols like bitcoin. Our emphasis is on privacy, open-source, and decentralization.

Events are focused, high-signal, and conversational. We start with pizza and networking, then dive into 90 minutes of content. Each month features a new theme and a lineup of speakers sharing short talks, technical deep dives, and live demos. Discussion, Q&A, and audience participation are built in and encouraged.

Come ready to learn something new, meet someone interesting, and leave with the confidence to ship what you're building. We typically meet on the 4th Thursday of each month in the Presidio. Check the Luma schedule below to confirm, dates occasionally shift.

Here are a few areas we're currently interested in, but the list is always evolving and open to new ideas.

• >Agent frameworks, memory, and orchestration
• >AI-native tools across coding, design, and audio workflows
• >Open models and open-source projects
• >Privacy-first systems and local AI
• >Frontier model research and training
• >GPUs, inference, and model infrastructure
• >Agentic payments on open systems like bitcoin and Lightning

Builder is hosted at Presidio Bitcoin, a community workspace for individuals and startups working toward a more open, private, and decentralized future across bitcoin and AI. Free parking is available nearby, and the PresidioGo shuttle offers easy access from downtown.

Check out the Presidio Bitcoin YouTube channel for shows filmed at the on-site recording studio, including PBJ, a podcast on AI, Silicon Valley, and bitcoin.

Interested in speaking? Know someone who should? Have something in mind? We're always looking for new presenters, whether you're local to the Bay or just passing through.

Reach out at builder@spiral.xyz