TeleChat3 LLM: China’s Open-Source AI Breakthrough Trained Fully on Domestic Hardware

In-Depth Look at TeleChat3: China Telecom’s Open-Source Thinking-Enabled Models Trained Fully on Domestic Hardware Summary / Meta Description TeleChat3 is China Telecom’s latest open-source large language model series, fully trained on domestic computing infrastructure. Released in December 2025, the lineup includes the 105B MoE model (TeleChat3-105B-A4.7B-Thinking, ~4.7B active parameters) and the 36B dense model (TeleChat3-36B-Thinking). Both feature explicit “Thinking” mode for step-by-step reasoning, achieving strong results in coding (SWE-Bench Verified 51), agent capabilities (Tau2-Bench 63.6), and multi-dimensional benchmarks. If you’re evaluating open-source LLMs in early 2026 — especially models that prioritize traceable reasoning, realistic engineering performance, and full-stack domestic sovereignty …