We present BlenderBot 3, a 175B parameter dialogue model capable of open-domain conversation with access to the internet and a longterm memory, and having been trained on a large number of user defined tasks. We release both the model weights and code, and have also deployed the model on a public web page to interact with organic users. This technical report describes how the model was built (architecture, model and training scheme), and details of its deployment, including safety mechanisms. Human evaluations show its superiority to existing open-domain dialogue agents, including its predecessors Komeili et al., 2022). Finally, we detail our plan for continual learning using the data collected from deployment, which will also be publicly released. The goal of this research program is thus to enable the community to study ever-improving responsible agents that learn through interaction. * * We use the phrase continual learning in the sense of learning that continues over time using data from the model's interactions, but training itself will actually be performed in successive large batches; the model is not updated online.† Equal contribution.