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ChemLLM-7B-Chat is an open-source 7‑billion‑parameter large language model optimized for chemistry and molecule science, offering chat-style text generation for domain‑specific tasks. Hosted on Hugging Face by AI4Chem, it uses Safetensors, is licensed under Apache-2.0, and is built around an InternLM-based causal LM architecture with English and Chinese support. Marketed as the first open-source LLM for chemistry and molecules, it provides accompanying documentation and variant releases (e.g., 1.5-DPO, 1.5-SFT) for researchers and developers.
AI named AI4Chem / ChemLLM from December 2025 to March 2026.