Own your intelligence stack, folks! Open models, open data, and open harnesses are where a lot of the real agent building is happening right now. Here's a great opportunity to catch up on the latest. @digitalocean's Open Intelligence Summit today features talks on building an agent with an open harness, when it's worth post-training an open model for your agents, and how to keep a post-training loop running without idle GPUs. Great lineup from Nous Research, OpenHands, NVIDIA, Hugging…