Protocol releases, technical thinking, and updates from Arcus Labs.
We’re releasing the Iterative Reasoning Graph specification — an open protocol for AI systems that reason in explicit, persistent, revisable structures rather than ephemeral token streams. The reasoning doesn’t disappear after the response. It lives in a graph you can inspect, replay, and audit.
Read →We’re releasing the Epistemic Integrity Evaluation specification — an open protocol for measuring whether AI systems handle uncertainty honestly, consistently, and proportionally. It’s not about whether the model got the answer right. It’s about whether it behaved well when it didn’t know.
Read →