A 4B-parameter agent foundation model co-developed by OpenBMB, THUNLP (Tsinghua), and partners. Built on Qwen3-4B-Thinking-2507, it supports 100+ rounds of continuous environment interaction. Achieves SOTA among 4B-class models on 8 long-horizon agent benchmarks including GAIA, HLE, and BrowserComp. Runs on 8GB GPU memory. Open-sourced January 12, 2026.
Parameters
4B
Context Window
32K
License
Other (OpenBMB)
Release Date
2026-01-12
API Pricing
API pricing for this model is not yet available