Zen Eco (open-weight tier)
Collection
Open-weight 'eco' tier — 4B instruct / thinking / agent. • 6 items • Updated
Instruction-tuned general-purpose language model (foundation Eco line).
Repackaged from Qwen/Qwen3-4B (apache-2.0, Alibaba Qwen). Not trained from scratch — a permissively-licensed redistribution for the OSS-clean Zen model line.
| Property | Value |
|---|---|
| Parameters | 4B (dense) |
| Architecture | Qwen3 (Qwen3ForCausalLM) |
apache-2.0. Upstream: Qwen/Qwen3-4B by Alibaba Qwen (apache-2.0).