mxi_Hybrid_v0_preview

Public download of the complete S4000 joint model and validated runtime package. No invitation, login, or approval is required to download. Public availability does not replace the third-party licenses and model terms included in the package. Planner, action, base models and normalization must be loaded together.

Canonical code and XPolicyLab adapter: https://github.com/D-URing/MXI Follow its README and the included PRIVATE_DELIVERY.txt. That filename and the private-access wording in sealed acceptance records describe the original packaging stage; the owner subsequently authorized public HF downloads. The checkpoint path passed to the adapter is model/, not the repository root or a lone action file.

The included Linux x86_64 runtime installs at /opt/mxi/runtime. Validation used Ubuntu 22.04-compatible containers and a 96 GB GPU. The evaluator supplies the simulator and a compatible NVIDIA driver. No training data is included.

Local acceptance includes a real protocol check, one successful stack_blocks rollout and a fixed-observation numerical migration check repeated twice. This is not an official leaderboard score or a claim of general equivalence. See ACCEPTANCE.json and the evidence directory for scope and limitations.

Use a pinned HF commit and verify DELIVERY_SHA256.json against the independently provided hash before installing or executing the private runtime. The MXI source repository remains access-controlled for the official handoff; the runtime package necessarily contains the inference implementation.