Open Source at TNG
At TNG, we do recognize the importance of free software. Many of our colleagues actively contribute to various open-source projects, both during our Techdays and in their free time. TNG also publishes and maintains several of its own open-source projects, which have either evolved from or been inspired by client projects.
Open-source AI projects
Our AI-related contributions are primarily represented on Hugging Face.
TNG Chimera models
Details on the background and an analysis of all Chimera model variants are available in one of our papers on arXiv as well as via our OpenRouter and Hugging Face profiles.
DeepSeek-R1T-Chimera
In April 2025, we published DeepSeek-R1T-Chimera, our first open-weights model, which laid the foundation for further research of AI models. It added R1 reasoning to DeepSeek AI V3-0324. We applied a novel construction method: The Chimera model is a child LLM, using V3's shared experts augmented with a custom merge of R1's routed experts. It is not a fine-tune or distillation, but constructed from neural network parts of both parent MoE (Mixture of Experts) models. The model weights are available on Hugging Face.
DeepSeek-TNG R1T2 Chimera
DeepSeek-TNG R1T2 Chimera was released in July 2025. This Chimera model is a Tri-Mind Assembly-of-Experts LLM with three parents, namely DeepSeek's R1-0528, R1 and V3-0324. The model weights are available on Hugging Face under the MIT licence. In August 2025, DeepSeek-TNG R1T2 Chimera has ranked in the top-20 of OpenRouter's most popular models.
TNG-R1T-Chimera
In November 2025, we released TNG-R1T-Chimera, an experimental LLM focusing on creative storytelling and character interaction.
olmOCR
We recently created a fine-tuned Optical Character Recognition (OCR) AI model based on olmOCR to help us automate our internal document processing workflows. In our new Hugging Face article “Finetuning olmOCR to be a faithful OCR-Engine”, we discuss how we trained the Vision Language Model (VLM) to reliably transcribe the headers and footers of invoices.
The model weights are available on Hugging Face as well.
