Refractal
Copyright 2026 Nalin Raut

Licensed under the Apache License, Version 2.0. See LICENSE.

This product depends on software from the following projects.
No source from them is included in this distribution.

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vla-evaluation-harness
https://github.com/allenai/vla-evaluation-harness
Copyright The Allen Institute for Artificial Intelligence
Licensed under the Apache License, Version 2.0

Refractal's `--backend vla-eval` runs every episode through this harness. It
provides the model-server protocol, the benchmark adapters, the observation and
action specifications, and the episode loop. Refractal subclasses two of its
classes (`Orchestrator` and `EpisodeRecorder`) and adds no copies of its source.
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Benchmark suites and model servers loaded through the harness at run time are
the work of their own authors and carry their own licences. Refractal neither
distributes nor modifies them.
