Foundation Models Package (openstef_foundation_models)

Pretrained foundation-model forecasters that run on an ONNX inference runtime and plug into openstef-models workflows and openstef-beam backtesting. Chronos-2 is the first model family the package ships; the inference backend, provider selection, checkpoint catalog, and workflow machinery are model-agnostic.

The package is split into four subpackages:

• models holds the checkpoint catalog (Chronos2, CheckpointVariant), the checkpoint resolution types, and the Chronos2Forecaster.

• presets holds ForecastingWorkflowConfig and create_forecasting_workflow(), the one-call path from config to a runnable workflow.

• inference holds the InferenceBackend protocol, the ONNX backend, the execution-provider configs, and the host-aware provider selection policy.

• integrations holds FoundationModelBacktestForecaster, the beam backtesting adapter.

models	Foundation-model artifacts: checkpoints and forecasters.
presets	Presets for building foundation-model forecasters from declarative config.
inference	Inference backends for foundation-model forecasters.
integrations	Integrations with neighbouring OpenSTEF frameworks, one module per framework.