Thinking Machines has released a new open-weights model called Inkling, which is a Mixture-of-Experts transformer with 975B total parameters and supports a context window of up to 1M tokens. Inkling is designed to be a broad, balanced foundation model that can be fine-tuned for specific tasks and has been trained on a large dataset of text, images, audio, and video. The model is available for fine-tuning on the Tinker platform, and its multimodal capabilities allow it to reason over text, images, and audio. Inkling is the first in a family of models of different sizes, with a smaller version called Inkling-Small also available.