Concept
Open RAIL-M
An 'open but restricted' model license that permits free use, modification and distribution while attaching use restrictions (such as prohibitions on discrimination and surveillance) and requiring downstream derivatives to carry the same restrictions. It is not an open-source license as defined by OSI.
Timeline (last 90 days)
Oct 19
Drex has open weights but uses the Open RAIL-M license with usage restrictions, so it is not open source as defined by OSI; it offers both hosted and self-hosted channels; it is based on Qwen3.6-35B-A3B MoE, with 35B total parameters and about 3B activated; self-hosted default context is 16K with a maximum of 128K, and hosted is 128K.
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